Seagate Laptop ST2000NM0014 User Guide

Product Manual  
®
Seagate Enterprise Capacity 3.5 HDD v4 SAS  
Standard 4KN models  
Standard 5xxE models  
ST6000NM0014  
ST4000NM0014  
ST2000NM0014  
ST6000NM0034  
ST4000NM0034  
ST2000NM0034  
Self-Encryption 4KN models  
Self-Encryption 5xxE models  
ST6000NM0074  
ST4000NM0074  
ST2000NM0074  
ST6000NM0054  
ST4000NM0054  
ST2000NM0054  
SED (FIPS 140-2) 4KN model  
(Review Pending)  
SED (FIPS 140-2) 5xxE model  
(Review Pending)  
ST6000NM0114  
ST6000NM0104  
100726011  
Rev. A  
May 2014  
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Contents  
1.0  
2.0  
2.1  
2.1.1  
2.1.2  
2.1.3  
2.1.4  
2.2  
3.0  
3.1  
3.2  
3.3  
3.4  
3.5  
3.6  
3.7  
4.0  
4.1  
4.1.1  
4.1.2  
4.2  
4.3  
4.4  
4.4.1  
4.4.2  
5.0  
5.1  
5.1.1  
5.1.2  
5.1.3  
5.1.4  
5.2  
5.2.1  
5.2.2  
5.2.3  
5.2.4  
5.2.5  
5.2.6  
6.0  
6.1  
PowerChoiceTM power management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
6.2  
6.3  
6.3.1  
6.3.2  
6.3.3  
Seagate Enterprise Capacity 3.5 HDD v4 SAS Product Manual, Rev. A  
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Contents  
6.4  
6.5  
6.5.1  
6.5.2  
6.5.3  
6.5.4  
6.5.5  
6.5.6  
6.5.7  
6.5.8  
6.6  
7.0  
8.0  
8.1  
8.2  
8.2.1  
8.2.2  
8.2.3  
8.3  
8.4  
8.5  
8.6  
8.7  
8.8  
8.9  
8.10  
8.11  
9.0  
9.1  
9.2  
9.3  
9.4  
9.5  
9.6  
9.7  
9.8  
9.8.1  
9.8.2  
9.8.3  
10.0  
11.0  
10.1  
10.2  
10.3  
10.4  
11.1  
11.1.1  
11.1.2  
11.2  
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11.3  
11.4  
11.3.1  
11.3.2  
11.4.1  
11.4.2  
11.4.3  
11.4.4  
11.4.5  
11.4.6  
11.4.7  
11.5  
11.5.1  
11.5.2  
11.6  
11.7  
Seagate Enterprise Capacity 3.5 HDD v4 SAS Product Manual, Rev. A  
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Seagate Technology Support Services  
For information regarding online support and services, visit: http://www.seagate.com/about/contact-us/technical-support/  
Available services include:  
Presales & Technical support  
Global Support Services telephone numbers & business hours  
Authorized Service Centers  
For information regarding Warranty Support, visit: http://www.seagate.com/support/warranty-and-replacements/  
For information regarding data recovery services, visit: http://www.seagate.com/services-software/data-recovery-services/  
For Seagate OEM and Distribution partner portal, visit: http://www.seagate.com/partners  
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1.0 SCOPE  
®
This manual describes Seagate Enterprise Capacity 3.5 HDD v4 SAS (Serial Attached SCSI) disk drives.  
Enterprise Capacity 3.5 HDD v4 drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface  
Manual (part number 100293071) describes the general SAS characteristics of this and other Seagate SAS drives. The Self-Encrypting  
Drive Reference Manual, part number 100515636, describes the interface, general operation, and security features available on Self-  
Encrypting Drive models.  
Product data communicated in this manual is specific only to the model numbers listed in this manual. The data listed in this manual may  
not be predictive of future generation specifications or requirements. If designing a system which will use one of the models listed or future  
generation products and need further assistance, please contact the Field Applications Engineer (FAE) or our global support services  
Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models.  
Standard 4KN  
models  
Standard 5xxE  
models  
Self-Encrypting  
4KN (SED) models  
Self-Encrypting  
5xxE (SED) models  
FIPS 140-2 Level 2  
(Review Pending)  
ST6000NM0014  
ST4000NM0014  
ST2000NM0014  
ST6000NM0034  
ST4000NM0034  
ST2000NM0034  
ST6000NM0074  
ST4000NM0074  
ST2000NM0074  
ST6000NM0054  
ST4000NM0054  
ST2000NM0054  
4KN model  
ST6000NM0114  
5xxE model  
ST6000NM0104  
Previous generations of Seagate Self-Encrypting Drive models were called Full Disk  
Encryption (FDE) models before a differentiation between drive-based encryption and  
other forms of encryption was necessary.  
NOTE  
NOTE  
.
The Self-Encrypting Drive models indicated on the cover of this product manual have  
provisions for “Security of Data at Rest” based on the standards defined by the Trusted  
Computing Group (see www.trustedcomputinggroup.org).  
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2.0 APPLICABLE STANDARDS AND REFERENCE DOCUMENTATION  
The drives documented in this manual have been developed as system peripherals to the highest standards of design and construction.  
The drives depends on host equipment to provide adequate power and environment for optimum performance and compliance with  
applicable industry and governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding,  
audible noise control, and temperature regulation. In particular, the drive must be securely mounted to guarantee the specified  
2.1  
STANDARDS  
The Enterprise Capacity 3.5 HDD v4 family complies with Seagate standards as noted in the appropriate sections of this manual and the  
Seagate SAS Interface Manual, part number 100293071.  
The drives are recognized in accordance with UL 60950-1 as tested by UL, CSA 60950-1 as tested by CSA, and EN60950-1 as tested by  
TUV.  
The security features of Self-Encrypting Drive models are based on the “TCG Storage Architecture Core Specification” and the “TCG  
Storage Workgroup Security Subsystem Class: Enterprise_A” specification with additional vendor-unique features as noted in this product  
manual.  
2.1.1 Electromagnetic compatibility  
The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use. The drive is supplied as a  
subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the  
Canadian Department of Communications.  
The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable shielding. The  
drive is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department of Communications when  
properly packaged; however, it is the user’s responsibility to assure that the drive meets the appropriate EMI requirements in their system.  
Shielded I/O cables may be required if the enclosure does not provide adequate shielding. If the I/O cables are external to the enclosure,  
shielded cables should be used, with the shields grounded to the enclosure and to the host controller.  
2.1.1.1 Electromagnetic susceptibility  
As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the responsibility of those  
integrating the drive within their systems to perform those tests required and design their system to ensure that equipment operating in the  
same system as the drive or external to the system does not adversely affect the performance of the drive. See Table 2, DC power  
requirements.  
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2.1.2 Electromagnetic compliance  
Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick Marking. The  
drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for  
test platforms. The system configurations include:  
• Typical current use microprocessor  
• Keyboard  
• Monitor/display  
• Printer  
• Mouse  
Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply.  
The computer manufacturer or system integrator shall confirm EMC compliance and provide the appropriate marking for their product.  
Electromagnetic compliance for the European Union  
If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility Directive 2004/  
108/EC as put into place on 20 July 2007.  
Canada ICES-003  
If this model has the ICES-003 Marking it complies with the Canadian Standard Association Standard CAN/CSA-CISPR 22-10, Information  
Technology Equipment - Radio Disturbance Characteristics - Limits and Methods of Measurement.  
Australian RCM Mark  
If this model has the RCM Marking it complies with the Australia/New Zealand Standard AS/NZ CISPR22 and meets the Electromagnetic  
Compatibility (EMC) Framework requirements of Australia’s Radiocommunications Act.  
Korean KCC  
If these drives have the Korean Communications Commission (KCC) logo, they comply with paragraph 1 of Article 11 of the  
Electromagnetic Compatibility control Regulation and meet the Electromagnetic Compatibility (EMC) Framework requirements of the  
Radio Research Laboratory (RRL) Communications Commission, Republic of Korea.  
These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B  
products. Drives are tested in a representative, end-user system by a Korean-recognized lab.  
• Family name:  
Enterprise Capacity 3.5 HDD v4 SAS  
In Process  
• Certificate number:  
• Manufacturing date:  
In Process  
• Manufacturer/nationality: USA, Singapore and China  
Taiwanese BSMI  
If this model has two Chinese words meaning “EMC certification” followed by an eight digit identification number, as a Marking, it complies  
with Chinese National Standard (CNS) 13438 and meets the Electromagnetic Compatibility (EMC) Framework requirements of the  
Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI).  
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2.1.3 European Union Restriction of Hazardous Substances (RoHS)  
The European Union Restriction of Hazardous Substances (RoHS) Directive, restricts the presence of chemical substances, including  
Lead, Cadmium, Mercury, Hexavalent Chromium, PBB and PBDE, in electronic products, effective July 2006. This drive is manufactured  
with components and materials that comply with the RoHS Directive.  
A number of parts and materials in Seagate products are procured from external suppliers. We rely on the representations of our suppliers  
regarding the presence of RoHS substances in these parts and materials. Our supplier contracts require compliance with our chemical  
substance restrictions, and our suppliers document their compliance with our requirements by providing material content declarations for  
all parts and materials for the disk drives documented in this publication. Current supplier declarations include disclosure of the inclusion of  
any RoHS-regulated substance in such parts or materials.  
Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which  
restrict chemical content in electronic products. These systems include standard operating procedures that ensure that restricted  
substances are not utilized in our manufacturing operations, laboratory analytical validation testing, and an internal auditing process to  
ensure that all standard operating procedures are complied with.  
2.1.4 China Restriction of Hazardous Substances (RoHS) Directive  
This product has an Environmental Protection Use Period (EPUP) of 20 years. The following table contains information  
mandated by China's "Marking Requirements for Control of Pollution Caused by Electronic Information Products" Standard.  
"O" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is lower than the threshold defined  
by the China RoHS MCV Standard.  
"X" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is over the threshold defined by the  
China RoHS MCV Standard.  
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2.2  
REFERENCE DOCUMENTS  
SAS Interface Manual  
Seagate part number: 100293071  
SCSI Commands Reference Manual  
Seagate part number: 100293068  
Self-Encrypting Drives Reference Manual  
Seagate part number: 100515636  
ANSI SAS Documents  
SFF-8323  
SFF-8460  
SFF-8470  
SFF-8482  
3.5” Drive Form Factor with Serial Connector  
HSS Backplane Design Guidelines  
Multi Lane Copper Connector  
SAS Plug Connector  
ISO/IEC 14776-xxx FC Protocol for SCSI-3 (FCP-3) Standard (ANSI INCITS 416)  
ISO/IEC 14776-xxx FC Protocol for SCSI-3 (FCP-4) Standard (ANSI INCITS 481)  
ANSI INCITS.xxx  
Serial Attached SCSI-2 (SAS-2) Standard (ANSI INCITS 457)  
ISO/IEC 14776-xxx Serial Attached SCSI-2.1 (SAS-2.1) Standard (ANSI INCITS 478)  
ISO/IEC 14776-xxx Serial Attached SCSI-3 (SAS-3) Standard (BSR INCITS 519)  
ISO/IEC 14776-xxx SCSI Architecture Model-4 (SAM-4) Standard (ANSI INCITS 447)  
ISO/IEC 14776-xxx SCSI Architecture Model-5 (SAM-5) Standard (ANSI INCITS 515)  
ISO/IEC 14776-xxx SCSI Primary Commands-3 (SPC-3) Standard (ANSI INCITS 408)  
ISO/IEC 14776-xxx SCSI Primary Commands-3 (SPC-4) Standard (ANSI INCITS 513)  
ISO/IEC 14776-xxx SCSI Block Commands-2 (SBC-2) Standard (ANSI INCITS 405)  
ISO/IEC 14776-xxx SCSI Block Commands-3 (SBC-3) Standard (BSR INCITS 514)  
ISO/IEC 14776-xxx SAS Protocol Layer-3 (SPL-3) Standard (BSR INCITS 492)  
Trusted Computing Group (TCG) Documents (apply to Self-Encrypting Drive models only)  
TCG Storage Architecture Core Specification, Rev. 1.0  
TCG Storage Security Subsystem Class Enterprise Specification, Rev. 1.0  
Specification for Acoustic Test Requirement and Procedures  
Seagate part number: 30553-001  
In case of conflict between this document and any referenced document, this document takes precedence.  
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3.0 GENERAL DESCRIPTION  
Enterprise Capacity 3.5 HDD v4 drives provide high performance, high capacity data storage for a variety of systems including engineering  
workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-generation  
computing demands for performance, scalability, flexibility and high-density storage requirements.  
Enterprise Capacity 3.5 HDD v4 drives are random access storage devices designed to support the Serial Attached SCSI Protocol as  
described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general  
interface characteristics of this drive. Enterprise Capacity 3.5 HDD v4 drives are classified as intelligent peripherals and provide level 2  
conformance (highest level) with the ANSI SCSI-1 standard. The SAS connectors, cables and electrical interface are compatible with  
Serial ATA (SATA), giving future users the choice of populating their systems with either SAS or SATA hard disk drives. This allows users  
to continue to leverage existing investment in SCSI while gaining a 12Gb/s serial data transfer rate.  
The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security of Data at Rest” based on the  
standards defined by the Trusted Computing Group  
(see www.trustedcomputinggroup.org).  
The head and disk assembly (HDA) is sealed at the factory. Air recirculates within the HDA through a non-replaceable filter to maintain a  
contamination-free HDA environment.  
Never disassemble the HDA and do not attempt to service items in the sealed  
enclosure (heads, media, actuator, etc.) as this requires special facilities. The drive  
NOTE  
does not contain user-replaceable parts. Opening the HDA for any reason voids the  
product warranty.  
Enterprise Capacity 3.5 HDD v4 drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibility  
of destroying or degrading data by landing in the data zone. The heads automatically go to the ramp load/unload when power is removed  
from the drive.  
An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling.  
The shipping lock disengages and the head load process begins when power is applied to the drive.  
Enterprise Capacity 3.5 HDD v4 drives decode track 0 location data from the servo data embedded on each surface to eliminate  
mechanical transducer adjustments and related reliability concerns.  
The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that provides  
excellent performance with minimal power dissipation.  
Seagate recommends validating the configuration with the selected HBA/RAID  
controller manufacturer to ensure use of full capacity is supported.  
NOTE  
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3.1  
STANDARD FEATURES  
Enterprise Capacity 3.5 HDD v4 drives have the following standard features:  
• Perpendicular recording technology  
• 1.5 / 3.0 / 6.0/12.0 Gb Serial Attached SCSI (SAS) interface  
• Integrated dual port SAS controller supporting the SCSI protocol  
• Support for SAS expanders and fanout adapters  
• Firmware downloadable using the SAS interface  
• 128 - deep task set (queue)  
• Supports up to 32 initiators  
• Jumperless configuration.  
• User-selectable logical block sizes for 5xxE (512, 520, 524 or 528 bytes per logical block).  
• User-selectable logical block sizes for 4KN (4096, 4160, 4192 or 4224 bytes per logical block).  
• Industry standard SFF 3.5-in dimensions  
• Programmable logical block reallocation scheme  
• Flawed logical block reallocation at format time  
• Programmable auto write and read reallocation  
• Reallocation of defects on command (Post Format)  
• No preventive maintenance or adjustments required  
• Embedded servo design  
• Dedicated head load/unload zone  
• Self diagnostics performed when power is applied to the drive  
• Vertical, horizontal, or top down mounting  
• 128 MB data buffer (see Section 4.4).  
• Drive Self Test (DST)  
• SAS Power Disable  
• Power Save  
• Seagate RAID RebuildTM  
• Idle Read After Write (IRAW)  
®
Seagate Enterprise Capacity 3.5 HDD v4 SAS Self-Encrypting Drive models have the following additional features:  
• Automatic data encryption/decryption  
• Controlled access  
• Random number generator  
• Drive locking  
• 16 independent data bands  
• Cryptographic erase of user data for a drive that will be repurposed or scrapped  
• Authenticated firmware download  
3.2  
MEDIA DESCRIPTION  
The media used on the drive has a aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective  
layer for improved durability and environmental protection.  
3.3  
PERFORMANCE  
• Programmable multi-segmentable cache buffer  
• 1200MB/s maximum instantaneous data transfers.  
• 7200 RPM spindle. Average latency = 4.16ms  
• Background processing of queue  
• Supports start and stop commands (spindle stops spinning)  
• Adaptive seek velocity; improved seek performance  
.
There is no significant performance difference between Self-Encrypting Drive and  
standard (non-Self-Encrypting Drive) models.  
NOTE  
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3.4  
RELIABILITY  
• Annualized Failure Rate (AFR) of 0.63%  
• Mean time between failures (MTBF) of 1,400,000 hours  
• Balanced low mass rotary voice coil actuator  
• Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)  
• 5-year warranty  
3.5  
FORMATTED CAPACITIES  
Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes.  
Users having the necessary equipment may modify the data block size before issuing a format command and obtain different formatted  
capacities than those listed.  
To provide a stable target capacity environment and at the same time provide users with flexibility if they choose, Seagate recommends  
product planning in one of two modes:  
1. Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future products will  
meet. We recommend customers use this capacity in their project planning, as it ensures a stable operating point with  
backward and forward compatibility from generation to generation. The current guaranteed operating points for this prod-  
uct are  
6TB models  
Decimal  
4TB models  
Decimal  
2TB models  
Decimal  
SECTOR  
SIZE  
Hex  
Hex  
Hex  
11,721,045,168  
11,473,076,960  
11,157,495,560  
1,465,130,646  
1,436,538,464  
1,407,670,456  
2BAA0F4B0  
7,814,037,168  
7,648,717,976  
7,438,330,376  
976,754,646  
957,692,312  
938,446,976  
1D1C0BEB0  
3,907,029,168  
3,824,358,992  
3,719,165,192  
488,378,646  
478,846,160  
469,223,488  
E8E088B0  
512  
2ABD942E0  
29909DF08  
57541E96  
559FD660  
53E758B8  
1C7E62C98  
1BB5BEA08  
3A3817D6  
39153998  
E3F31650  
DDADF508  
1D1C1116  
1C8A9CD0  
1BF7C840  
520  
528  
4096  
4160  
4224  
37EF9080  
3.6  
PROGRAMMABLE DRIVE CAPACITY  
Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select (6) parameter  
list table in the SAS Interface Manual, part number 100293071. A value of zero in the Number of Blocks field indicates that the drive will not  
change the capacity it is currently formatted to have. A number other than zero and less than the maximum number of LBAs in the Number  
of Blocks field changes the total drive capacity to the value in the Number of Blocks field. A value greater than the maximum number of  
LBAs is rounded down to the maximum capacity.  
3.7  
FACTORY-INSTALLED OPTIONS  
Users may order the following items which are incorporated at the manufacturing facility during production or packaged before shipping.  
Some of the options available are (not an exhaustive list of possible options):  
• Other capacities can be ordered depending on sparing scheme and sector size requested.  
• Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit  
damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users plan-  
ning single unit distribution should specify this option.  
• The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each standard OEM  
drive shipped, but extra copies may be ordered.  
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4.0 PERFORMANCE CHARACTERISTICS  
This section provides detailed information concerning performance-related characteristics and features of Enterprise Capacity 3.5 HDD v4  
drives.  
4.1  
INTERNAL DRIVE CHARACTERISTICS  
Drive capacity  
Read/write data heads  
Bytes/track  
Bytes/surface  
Tracks/surface (total)  
Tracks/in  
6TB models  
12  
4TB models  
8
2TB models  
4
(formatted, rounded off value)  
1,470,464  
500,000  
337,400  
320,000  
2,011,000  
643  
Bytes (average, rounded off values)  
MB (unformatted, rounded off values)  
Tracks (user accessible)  
TPI (average)  
Peak bits/in  
Areal density  
BPI  
Gb/in  
2
Internal data rate  
Disk rotation speed  
Avg rotational latency  
2317  
7200  
4.16  
Mb/s (max)  
RPM  
ms  
4.1.1 Format command execution time  
5xxE-byte sectors (minutes)  
Maximum (with verify)  
6TB models  
1168.83  
4TB models  
2TB models  
926.28  
407.33  
384.17  
193.55  
596.17  
Maximum (without verify)  
4KN-byte sectors (minutes)  
Maximum (with verify)  
6TB models  
1185.62  
4TB models  
791.38  
2TB models  
393.65  
597.35  
411.48  
200.73  
Maximum (without verify)  
Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to  
the Initiator (excluding connect/disconnect).  
When changing sector sizes, the format times shown above may need to be increased by 30 minutes.  
4.1.2 General performance characteristics  
Minimum sector interleave  
1 to 1  
Maximum Internal data rate*  
2.32 Gb/s  
Sustained transfer rate  
100 to 216 MiB/s **  
SAS Interface maximum instantaneous transfer rate  
1200MB/s* per port  
(dual port = 2400MB/s*)  
Logical block sizes  
512 (default), 520, 524 or 528.  
Read/write consecutive sectors on a track  
Yes  
Flaw reallocation performance impact (for flaws reallocated at format time using the  
spare sectors per sparing zone reallocation scheme.)  
Negligible  
Average rotational latency  
4.16ms  
*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or  
from the host.  
** MiB/s x 1.048 = MB/s  
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4.2  
START/STOP TIME  
The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied.  
If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with  
the START bit equal to 0, the drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure).  
If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY (ENABLE SPINUP)  
primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1. After receiving a START STOP UNIT command  
with the START bit equal to 1, the drive waits for a NOTIFY (ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP)  
primitive through either port, the drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure).  
If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY  
(ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command.  
The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 23 seconds (maximum) from  
removal of DC power. SCSI stop time is 23 seconds. There is no power control switch on the drive.  
4.3  
PREFETCH/MULTI-SEGMENTED CACHE CONTROL  
The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system  
performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select this feature, the host sends the  
Mode Select command with the proper values in the applicable bytes in page 08h. Prefetch and cache operations are independent  
features from the standpoint that each is enabled and disabled independently using the Mode Select command; however, in actual  
All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Table  
4.4  
.
CACHE OPERATION  
Refer to the SAS Interface Manual for more detail concerning the cache bits.  
NOTE  
Of the 128MB physical buffer space in the drive, approximately (60,000) KB can be used as a cache. The buffer is divided into logical  
segments from which data is read and to which data is written.  
The drive keeps track of the logical block addresses of the data stored in each segment of the buffer. If the cache is enabled (see RCD bit  
in the SAS Interface Manual), data requested by the host with a read command is retrieved from the buffer, if possible, before any disk  
access is initiated. If cache operation is not enabled, the buffer is still used, but only as circular buffer segments during disk medium read  
operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested  
read data, but goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on the way to the  
host. All data transfers to the host are in accordance with buffer-full ratio rules. See the explanation provided with the information about  
Mode Page 02h (disconnect/reconnect control) in the SAS Interface Manual.  
The following is a simplified description of the prefetch/cache operation:  
Case A—read command is received and all of the requested logical blocks are already in the cache:  
1. Drive transfers the requested logical blocks to the initiator.  
Case B—A Read command requests data, and at least one requested logical block is not in any segment of the cache:  
1. The drive fetches the requested logical blocks from the disk and transfers them into a segment, and then from there to  
the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.  
2. If the prefetch feature is enabled, refer to section 4.4.2 for operation from this point.  
Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The drive dynamically  
creates and removes segments based on the workload. The wrap-around capability of the individual segments greatly enhances the  
cache’s overall performance.  
The size of each segment is not reported by Mode Sense command page 08h, bytes 14 and 15. The value 0XFFFF is always reported  
regardless of the actual size of the segment. Sending a size specification using the Mode Select command (bytes 14 and 15) does not set  
up a new segment size. If the STRICT bit in Mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to  
change an unchangeable parameter.  
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4.4.1 Caching write data  
Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is  
stored while the drive performs the Write command.  
If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future read cache  
hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation scheme is set up or changed  
independently, having nothing to do with the state of RCD. When a write command is issued, if RCD=0, the cache is first checked to see if  
any logical blocks that are to be written are already stored in the cache from a previous read or write command. If there are, the respective  
cache segments are cleared. The new data is cached for subsequent Read commands.  
If the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is reached, the  
data is written into the beginning of the same cache segment, overwriting the data that was written there at the beginning of the operation;  
however, the drive does not overwrite data that has not yet been written to the medium.  
If write caching is enabled (WCE=1), then the drive may return Good status on a write command after the data has been transferred into  
the cache, but before the data has been written to the medium. If an error occurs while writing the data to the medium, and Good status  
has already been returned, a deferred error will be generated.  
The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon completion of a  
Synchronize Cache command, all data received from previous write commands will have been written to the medium. Table 10 shows the  
mode default settings for the drive.  
4.4.2 Prefetch operation  
If the Prefetch feature is enabled, data in contiguous logical blocks on the disk immediately beyond that which was requested by a Read  
command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Read commands that  
request those logical blocks (this is true even if cache operation is disabled). Though the prefetch operation uses the buffer as a cache,  
finding the requested data in the buffer is a prefetch hit, not a cache operation hit.  
To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch.  
The drive does not use the Max Prefetch field (bytes 8 and 9) or the Prefetch Ceiling field (bytes 10 and 11).  
When prefetch (read look-ahead) is enabled (enabled by DRA = 0), the drive enables prefetch of contiguous blocks from the disk when it  
senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not likely to occur.  
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5.0 RELIABILITY SPECIFICATIONS  
The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply  
voltages, environmental requirements and drive mounting constraints.  
Seek error rate:  
Less than 10 errors in 108 seeks  
1
Read Error Rates  
Recovered Data  
Unrecovered Data  
Miscorrected Data  
Less than 10 errors in 1012 bits transferred (OEM default settings)  
Less than 1 sector in 1015 bits transferred  
Less than 1 sector in 1021 bits transferred  
Less than 1 error in 1012 bits transferred  
1,400,000 hours  
Interface error rate:  
Mean Time Between Failure (MTBF):  
Annualized Failure Rate (AFR):  
Preventive maintenance:  
0.63%  
None required  
1.  
Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.  
5.1  
ERROR RATES  
The error rates stated in this manual assume the following:  
• The drive is operated in accordance with this manual using DC power as defined in paragraph 6.3, "DC power require-  
• Errors caused by host system failures are excluded from error rate computations.  
• Assume random data.  
• Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry  
time.  
5.1.1 Recoverable Errors  
Recoverable errors are those detected and corrected by the drive, and do not require user intervention.  
Recoverable Data errors will use correction, although ECC on-the-fly is not considered for purposes of recovered error specifications.  
Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read, and using write bits  
transferred for recoverable errors occurring during a write.  
5.1.2 Unrecoverable Errors  
An unrecoverable data error is defined as a failure of the drive to recover data from the media. These errors occur due to head/media or  
write problems. Unrecoverable data errors are only detected during read operations, but not caused by the read. If an unrecoverable data  
error is detected, a MEDIUM ERROR (03h) in the Sense Key will be reported. Multiple unrecoverable data errors resulting from the same  
cause are treated as 1 error.  
5.1.3 Seek errors  
A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive  
automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will  
8
be reported with a Hardware error (04h) in the Sense Key. Recoverable seek errors are specified at Less than 10 errors in 10 seeks.  
Unrecoverable seek errors (Sense Key = 04h) are classified as drive failures.  
5.1.4 Interface errors  
An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port connected to the  
receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC error.  
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5.2  
RELIABILITY AND SERVICE  
Users can enhance the reliability of Enterprise Capacity 3.5 HDD v4 disk drives by ensuring that the drive receives adequate cooling.  
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)  
The product shall achieve an AFR of 0.63% (MTBF of 1,400,000 hours) over a 5 year service life when used in Enterprise Storage field  
conditions as limited by the following:  
• 8760 power-on hours per year.  
• HDA temperature as reported by the drive <= 40°C  
• Ambient wet bulb temp <= 26°C  
• The AFR (MTBF) is a population statistic not relevant to individual units  
• ANSI/ISA S71.04-2013 G2 classification levels and dust contamination to ISO 14644-1 Class 8 standards (as measured at  
the device)  
The MTBF specification for the drive assumes the operating environment is designed to maintain nominal drive temperature and humidity.  
The rated MTBF is based upon a sustained drive temperature of up to 122°F (40°C) and wet bulb temperature up to 78.8°F (26°C).  
Occasional excursions in operating conditions between the rated MTBF conditions and the maximum drive operating conditions may occur  
without significant impact to the rated MTBF. However continual or sustained operation beyond the rated MTBF conditions will degrade the  
drive MTBF and reduce product reliability.  
15  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Load unload cycles  
1 per 10 bits read, max  
0.63% (nominal power, 40°C case temperature)  
600,000 cycles  
Rated Workload  
Average rate of <550TB/year  
The MTBF specification for the drive assumes the I/O workload does not exceed the  
Average Annualized Workload Rate Limit of <550TB/year. Workloads exceeding the  
annualized rate may degrade the drive MTBF and impact product reliability. The Average  
Annualized Workload Rate Limit is in units of TB per year, or TB per 8760 power on  
hours. Workload Rate = TB transferred x (8760 / recorded power on hours).  
Warranty  
From this page, click on the “Check to see if the drive is under Warranty” link. The follow-  
ing are required to be provided: the drive serial number, model number (or part number)  
and country of purchase. The system will display the warranty information for the drive.  
Preventive maintenance  
None required.  
5.2.2 Hot plugging the drive  
When a disk is powered on by switching the power or hot plugged, the drive runs a self test before attempting to communicate on its’  
interfaces. When the self test completes successfully, the drive initiates a Link Reset starting with OOB. An attached device should  
respond to the link reset. If the link reset attempt fails, or any time the drive looses sync, the drive initiated link reset. The drive will initiate  
link reset once per second but alternates between port A and B. Therefore each port will attempt a link reset once per 2 seconds assuming  
both ports are out of sync.  
If the self-test fails, the drive does not respond to link reset on the failing port.  
It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD potential hazard is  
presented during the hot connect/disconnect operation. Discharge the static electricity from the drive carrier prior to inserting it into the  
system.  
The drive motor must come to a complete stop prior to changing the  
plane of operation. This time is required to insure data integrity.  
CAUTION  
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5.2.3 S.M.A.R.T.  
S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that  
indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow users to back up the data before an actual  
failure occurs.  
.
The drive’s firmware monitors specific attributes for degradation  
over time but can’t predict instantaneous drive failures.  
NOTE  
Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating performance of the drive and the  
thresholds are optimized to minimize “false” and “failed” predictions.  
Controlling S.M.A.R.T.  
The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page (1Ch).  
Use the DEXCPT bit to enable or disable the S.M.A.R.T. feature. Setting the DEXCPT bit disables all S.M.A.R.T. functions. When enabled,  
S.M.A.R.T. collects on-line data as the drive performs normal read and write operations. When the PERF bit is set, the drive is considered  
to be in “On-line Mode Only” and will not perform off-line functions.  
Users can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing S.M.A.R.T. resets  
the timer so that the next scheduled interrupt is in one hour.  
Users can interrogate the drive through the host to determine the time remaining before the next scheduled measurement and data logging  
process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows the user to control when S.M.A.R.T.  
interruptions occur. Forcing S.M.A.R.T. with the RTZ command resets the timer.  
Performance impact  
S.M.A.R.T. attribute data is saved to the disk so that the events that caused a predictive failure can be recreated. The drive measures and  
saves parameters once every one hour subject to an idle period on the drive interfaces. The process of measuring off-line attribute data  
and saving data to the disk is interruptable. The maximum on-line only processing delay is summarized below:  
Maximum processing delay  
Fully-enabled delay  
DEXCPT = 0  
S.M.A.R.T. delay times  
75 ms  
Reporting control  
Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). An example, if the MRIE is set to one,  
the firmware will issue to the host an 01-5D00 sense code. The FRU field contains the type of predictive failure that occurred. The error  
code is preserved through bus resets and power cycles.  
Determining rate  
S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to an  
unacceptable level. To determine rate, error events are logged and compared to the number of total operations for a given attribute. The  
interval defines the number of operations over which to measure the rate. The counter that keeps track of the current number of operations  
is referred to as the Interval Counter.  
S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of the number of errors for the  
current interval. This counter is referred to as the Failure Counter.  
Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set thresholds for the  
number of errors and their interval. If the number of errors exceeds the threshold before the interval expires, the error rate is considered to  
be unacceptable. If the number of errors does not exceed the threshold before the interval expires, the error rate is considered to be  
acceptable. In either case, the interval and failure counters are reset and the process starts over.  
Predictive failures  
S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firmware keeps a running count  
of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is incremented each time the error  
rate is unacceptable and decremented (not to exceed zero) whenever the error rate is acceptable. If the counter continually increments  
such that it reaches the predictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History Counter.  
There is a separate Failure History Counter for each attribute.  
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5.2.4 Thermal monitor  
Enterprise Capacity 3.5 HDD v4 drives implement a temperature warning system which:  
1. Signals the host if the temperature exceeds a value which would threaten the drive.  
2. Signals the host if the temperature exceeds a user-specified value.  
3. Saves a S.M.A.R.T. data frame on the drive which exceeds the threatening temperature value.  
A temperature sensor monitors the drive temperature and issues a warning over the interface when the temperature exceeds a set  
threshold. The temperature is measured at power-up and then at ten-minute intervals after power-up.  
The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the specified limit in compliance with  
the SCSI standard. The drive temperature is reported in the FRU code field of mode sense data. Users can use this information to  
determine if the warning is due to the temperature exceeding the drive threatening temperature or the user-specified temperature.  
This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is controlled by the Method of Reporting  
Informational Exceptions field (MRIE) on the Informational Exceptions Control (IEC) mode page (1Ch).  
The current algorithm implements two temperature trip points. The first trip point is set at 65°C which is the maximum temperature limit  
according to the drive specification. The second trip point is user-selectable using the Log Select command. The reference temperature  
parameter in the temperature log page (see Table 1) can be used to set this trip point. The default value for this drive is 65°C, however, the  
user can set it to any value in the range of 0 to 65°C. If users specify a temperature greater than 65°C in this field, the temperature is  
rounded down to 65°C. A sense code is sent to the host to indicate the rounding of the parameter field.  
Table 1:  
Temperature Log Page (0Dh)  
Parameter Code  
0000h  
Description  
Primary Temperature  
Reference Temperature  
0001h  
5.2.5 Drive Self Test (DST)  
Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. DST validates the  
functionality of the drive at a system level.  
There are two test coverage options implemented in DST:  
1. Extended test  
2. Short test  
The most thorough option is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the  
drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does some fundamental tests  
and scans portions of the media.  
If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from service and  
return it to Seagate for service.  
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5.2.5.1 DST failure definition  
The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log page if a functional failure is  
encountered during DST. The channel and servo parameters are not modified to test the drive more stringently, and the number of retries  
are not reduced. All retries and recovery processes are enabled during the test. If data is recoverable, no failure condition will be reported  
regardless of the number of retries required to recover the data.  
The following conditions are considered DST failure conditions:  
• Seek error after retries are exhausted  
• Track-follow error after retries are exhausted  
• Read error after retries are exhausted  
• Write error after retries are exhausted  
Recovered errors will not be reported as diagnostic failures.  
5.2.5.2 Implementation  
This section provides all of the information necessary to implement the DST function on this drive.  
5.2.5.2.1  
State of the drive prior to testing  
The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready,  
some of which are valid conditions, and not errors. For example, a drive may be in process of doing a format, or another DST. It is the  
responsibility of the host application to determine the “not ready” cause.  
While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.  
A Drive Not Ready condition is reported by the drive under the following conditions:  
• Motor will not spin  
• Motor will not lock to speed  
• Servo will not lock on track  
• Drive cannot read configuration tables from the disk  
In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.  
5.2.5.2.2  
Invoking DST  
To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended  
test) in bytes 1, bits 5, 6, and 7.  
5.2.5.2.3  
Short and extended tests  
DST has two testing options:  
1. short  
2. extended  
These testing options are described in the following two subsections.  
Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.  
Short test (Function Code: 001b)  
The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds. The short test  
does not scan the entire media surface, but does some fundamental tests and scans portions of the media. A complete read/verify scan is  
not performed and only factual failures will report a fault condition. This option provides a quick confidence test of the drive.  
Extended test (Function Code: 010b)  
The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-track  
operations test the positioning mechanism. The read operation tests the read head element and the media surface. The write element is  
tested through read/write/read operations. The integrity of the media is checked through a read/verify scan of the media. Motor  
functionality is tested by default as a part of these tests.  
The anticipated length of the Extended test is reported through the Control Mode page.  
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5.2.5.2.4  
Log page entries  
When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created by inserting a new self-test  
parameter block at the beginning of the self-test results log parameter section of the log page. Existing data will be moved to make room  
for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are more than 20 parameter blocks, the least  
recent parameter block will be deleted. The new parameter block will be initialized as follows:  
1. The Function Code field is set to the same value as sent in the DST command  
2. The Self-Test Results Value field is set to Fh  
3. The drive will store the log page to non-volatile memory  
After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-Test Results Log page in  
non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed by the drive. The self-test  
results value is a 4-bit field that reports the results of the test. If the field is set to zero, the drive passed with no errors detected by the DST.  
If the field is not set to zero, the test failed for the reason reported in the field.  
The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The Sense key, ASC, ASCQ, and  
FRU are used to report the failure condition.  
5.2.5.2.5 Abort  
There are several ways to abort a diagnostic. Users can use a SCSI Bus Reset or a Bus Device Reset message to abort the diagnostic.  
Users can abort a DST executing in background mode by using the abort code in the DST Function Code field. This will cause a 01 (self-  
test aborted by the application client) code to appear in the self-test results values log. All other abort mechanisms will be reported as a 02  
(self-test routine was interrupted by a reset condition).  
5.2.6 Product warranty  
Shipping  
When transporting or shipping a drive, use only a Seagate-approved container. Keep the original box. Seagate approved containers are  
easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved container voids the drive warranty.  
Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact the authorized  
Seagate distributor to purchase additional boxes. Seagate recommends shipping by an air-ride carrier experienced in handling computer  
equipment.  
Storage  
The maximum recommended storage period for the drive in a non-operational environment is 90 days. Drives should be stored in the orig-  
inal unopened Seagate shipping packaging whenever possible. Once the drive is removed from the Seagate original packaging the recom-  
mended maximum period between drive operation cycles is 30 days. During any storage period the drive non-operational temperature,  
humidity, wet bulb, atmospheric conditions, shock, vibration, magnetic and electrical field specifications should be followed.  
Product repair and return information  
Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction any third-party  
repair facilities. Any unauthorized repair or tampering with the factory seal voids the warranty.  
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6.0 PHYSICAL/ELECTRICAL SPECIFICATIONS  
This section provides information relating to the physical and electrical characteristics of the drive.  
6.1  
POWERCHOICETM POWER MANAGEMENT  
Drives using the load/unload architecture provide programmable power management to tailor systems for performance and greater energy  
efficiency.  
The table below lists the supported PowerChoice modes. The further down the user goes in the table, the more power savings the user  
gets. For example, Idle_B mode results in greater power savings than Idle_A mode. Standby_Z mode results in the greatest power  
savings.  
PowerChoice modes  
MODE  
DESCRIPTION  
Idle_A  
Reduced electronics  
Idle_B  
Heads unloaded. Disks spinning at full RPM  
Heads unloaded. Disks spinning at reduced RPM  
Idle_C  
Standby_Y  
Heads unloaded. Disks spinning at reduced RPM.  
Recovery requires the NOTIFY (Enable Spinup) command.  
Standby_Z  
Heads unloaded. Motor stopped (disks not spinning)  
Recovery requires the NOTIFY (Enable Spinup) command.  
PowerChoiceTM can be invoked using one of these two methods:  
• Power Condition mode page method—Enable and initialize the idle condition timers and/or the standby condition timers.  
The timer values are based on the values set in the Power Condition mode page.  
• START STOP UNIT command method—Use the START STOP UNIT command (OPERATION CODE 1Bh). This allows  
the host to directly transition the drive to any supported PowerChoice mode.  
If both the Power Condition mode page and START STOP UNIT command methods are used, the START STOP UNIT command request  
takes precedence over the Power Condition mode page power control and may disable the idle condition and standby condition timers.  
The REQUEST SENSE command reports the current PowerChoice state if active and also the method by which the drive entered the  
PowerChoice state.  
When the drive receives a command, all power condition timers are suspended if they were enabled via the Power Condition mode page.  
Once all outstanding commands are processed, the power condition timers are reinitialized to the values defined in the Power Condition  
mode page  
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6.1.1 PowerChoice reporting methods  
PowerChoiceTM provides these reporting methods for tracking purposes:  
Request Sense command reports  
• Current power condition  
• Method of entry  
.
Processing the Request Sense command does not impact the drive’s power save  
state.  
NOTE  
Mode Sense command reports (mode page 0x1A)  
• Idle conditions enabled / disabled  
• Idle condition timer values (100ms increments) (default, saved, current, changeable)  
Power Condition Vital Product Data (VPD) Page (VPD page 0x8A)  
• Supported power conditions  
• Typical recovery time from power conditions (1ms increments)  
Start/Stop Cycle Counter Log Page reports (log page 0x0E)  
• Specified and accumulated Start/Stops and Load/Unload cycles  
Power Condition Transitions Log Page reports (log page 0x1A, subpage 0x00)  
• Accumulated transitions to Active, Idle_A, Idle_B, Idle_C, Standby_Y, Standby_Z  
6.2  
AC POWER REQUIREMENTS  
None.  
6.3  
DC POWER REQUIREMENTS  
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.  
The standard drive models and the SED drive models have identical hardware, however the security and encryption portion of the drive  
controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about 30mA and  
a commensurate increase of about 150mW in power consumption. There is no additional drain on the 12V supply.  
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Table 2 6TB drive DC power requirements  
6.0Gb mode  
(Amps)  
12.0Gb mode  
(Amps)  
Notes  
(Amps)  
+5V  
(Watts)  
(Amps)  
+5V  
(Watts)  
Voltage  
Regulation  
[5]  
± 5% [2]  
± 5% [2]  
Avg idle current DCX  
Advanced idle current  
Idle A  
0.29  
0.58  
8.37  
0.31  
0.57  
8.43  
3s  
3s  
3s  
3s  
0.29  
0.29  
0.30  
0.28  
0.58  
0.51  
0.29  
0.01  
8.37  
7.54  
4.95  
1.46  
0.31  
0.31  
0.32  
0.30  
0.57  
0.51  
0.29  
0.01  
8.44  
7.62  
5.05  
1.55  
Idle B  
Idle C  
Standby  
Maximum starting current  
(peak DC) DC  
3s  
3s  
3s  
[3]  
[3]  
0.60  
0.78  
0.28  
2.04  
2.77  
0.11  
27.48  
37.14  
2.72  
0.62  
0.77  
0.30  
2.04  
2.78  
0.08  
27.58  
37.21  
2.58  
(peak AC) AC  
Delayed motor start (max) DC  
Peak operating current (random read):  
Typical DCX  
0.40  
0.42  
1.28  
0.84  
0.88  
2.52  
12.09  
12.66  
36.64  
0.43  
0.45  
1.27  
0.83  
0.89  
2.50  
12.13  
12.93  
36.35  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (random write)  
Typical DCX  
0.40  
0.42  
1.27  
0.72  
0.75  
2.53  
10.66  
11.10  
36.71  
0.42  
0.45  
1.53  
0.72  
0.75  
2.55  
10.77  
11.25  
38.25  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (sequential read)  
Typical DCX  
0.71  
0.74  
0.96  
0.62  
0.65  
3.02  
11.01  
11.50  
41.04  
0.74  
0.77  
1.37  
0.62  
0.64  
2.45  
1110  
11.53  
36.25  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (sequential write)  
Typical DCX  
0.61  
0.64  
0.82  
0.65  
0.67  
2.19  
10.78  
11.24  
30.38  
0.63  
0.67  
0.90  
0.64  
0.67  
2.30  
10.88  
11.39  
32.10  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
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Table 3 4TB drive DC power requirements  
6.0Gb mode  
(Amps)  
12.0Gb mode  
(Amps)  
Notes  
(Amps)  
+5V  
(Watts)  
(Amps)  
+5V  
(Watts)  
Voltage  
Regulation  
[5]  
± 5% [2]  
± 5% [2]  
Avg idle current DCX  
Advanced idle current  
Idle A  
0.33  
0.41  
6.52  
0.35  
0.41  
6.64  
3s  
3s  
3s  
3s  
0.33  
0.33  
0.34  
0.32  
0.41  
0.36  
0.21  
0.01  
6.52  
5.96  
4.23  
1.64  
0.35  
0.35  
0.36  
0.34  
0.41  
0.36  
0.21  
0.01  
6.65  
6.08  
4.34  
1.75  
Idle B  
Idle C  
Standby  
Maximum starting current  
(peak DC) DC  
3s  
3s  
3s  
[3]  
[3]  
0.68  
0.90  
0.36  
2.13  
2.71  
0.03  
28.96  
37.02  
2.16  
0.71  
0.89  
0.38  
2.13  
2.71  
0.02  
29.11  
36.97  
2.14  
(peak AC) AC  
Delayed motor start (max) DC  
Peak operating current (random read):  
Typical DCX  
0.44  
0.52  
1.54  
0.68  
0.72  
2.38  
10.39  
11.24  
36.26  
0.46  
0.54  
1.57  
0.68  
0.71  
2.41  
10.43  
11.22  
36.77  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (random write)  
Typical DCX  
0.44  
0.54  
1.60  
0.59  
0.74  
2.38  
9.32  
11.58  
36.56  
0.46  
0.56  
1.57  
0.59  
0.75  
2.43  
9.43  
11.80  
37.01  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (sequential read)  
Typical DCX  
0.75  
0.86  
1.12  
0.43  
0.45  
2.58  
8.87  
9.70  
0.77  
0.89  
1.26  
0.43  
0.45  
0.89  
8.98  
9.85  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (sequential write)  
Typical DCX  
36.56  
16.98  
0.63  
0.74  
0.88  
0.44  
0.47  
0.87  
8.48  
9.34  
0.66  
0.75  
0.97  
0.45  
0.47  
2.91  
8.63  
9.39  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
14.84  
39.77  
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Table 4 2TB drive DC power requirements  
6.0Gb mode  
(Amps)  
12.0Gb mode  
(Amps)  
Notes  
(Amps)  
+5V  
(Watts)  
(Amps)  
+5V  
(Watts)  
Voltage  
Regulation  
[5]  
± 5% [2]  
± 5% [2]  
Avg idle current DCX  
Advanced idle current  
Idle A  
0.30  
0.26  
4.57  
0.32  
0.26  
4.67  
3s  
3s  
3s  
3s  
0.31  
0.29  
0.31  
0.28  
0.26  
0.23  
0.15  
0.01  
4.60  
4.21  
3.32  
1.51  
0.32  
0.32  
0.32  
0.30  
0.26  
0.23  
0.15  
0.01  
4.67  
4.32  
3.42  
1.61  
Idle B  
Idle C  
Standby  
Maximum starting current  
(peak DC) DC  
3s  
3s  
3s  
[3]  
[3]  
0.54  
0.70  
0.28  
2.03  
2.61  
0.10  
27.06  
34.82  
2.60  
0.58  
0.76  
0.31  
2.03  
2.63  
0.11  
27.26  
35.36  
2.87  
(peak AC) AC  
Delayed motor start (max) DC  
Peak operating current (random read):  
Typical DCX  
0.41  
0.43  
1.23  
0.59  
0.61  
2.33  
9.10  
9.47  
0.43  
0.45  
1.22  
0.58  
0.60  
2.18  
9.17  
9.45  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (random write)  
Typical DCX  
34.11  
32.26  
0.41  
0.44  
1.50  
0.44  
0.58  
2.15  
7.35  
9.16  
0.43  
0.46  
1.36  
0.44  
0.59  
2.28  
7.44  
9.38  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (sequential read)  
Typical DCX  
33.30  
34.16  
0.72  
0.75  
0.98  
0.27  
0.29  
1.99  
6.86  
7.23  
0.73  
0.78  
1.24  
0.27  
0.28  
3.21  
6.94  
7.26  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
Peak operating current (sequential write)  
Typical DCX  
28.78  
44.72  
0.61  
0.65  
0.82  
0.29  
0.30  
2.91  
6.51  
6.85  
0.63  
0.66  
0.88  
0.29  
0.30  
2.73  
6.61  
6.90  
3s  
3s  
Maximum DC  
Maximum (peak) DC  
39.02  
37.16  
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[1]  
Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power supply at nominal  
voltage. N (number of drives tested) = 6, 35 Degrees C ambient.  
[2] For +12 V, a 10% tolerance is allowed during initial spindle start but must return to ± 5% before reaching 7200 RPM. The ± 5% must  
be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection  
by the host initiator.  
[3] See +12V current profile in Figure 1. (for 4TB models)  
[4] This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive.  
[5] See paragraph 6.3.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response.  
[6] Operating condition is defined as random 8 block reads.  
[7] During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum  
track.  
General DC power requirement notes.  
1. Minimum current loading for each supply voltage is not less than 1.7% of the maximum operating current shown.  
2. The +5V and +12V supplies should employ separate ground returns.  
3. Where power is provided to multiple drives from a common supply, careful consideration for individual drive power  
requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be  
available to each device.  
4. Parameters, other than spindle start, are measured after a 10-minute warm up.  
5. No terminator power.  
6.3.1 Conducted noise immunity  
Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise  
values given below are peak-to-peak measurements and apply at the drive power connector.  
+5v  
=
=
250 mV pp from 100 Hz to 20 MHz.  
+12v  
800 mV pp from 100 Hz to 8 KHz.  
450 mV pp from 8 KHz to 20 KHz.  
250 mV pp from 20 KHz to 5 MHz.  
6.3.2 Power sequencing  
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.  
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6.3.3 Current profiles  
The +12V (top) and +5V (bottom) current profiles for the Enterprise Capacity 3.5 HDD drives are shown below.  
Figure 1.  
6TB model current profiles  
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The +12V (top) and +5V (bottom) current profiles for the Enterprise Capacity 3.5 HDD drives are shown below.  
Figure 2.  
4TB model current profiles  
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The +12V (top) and +5V (bottom) current profiles for the Enterprise Capacity 3.5 HDD drives are shown below.  
Figure 3.  
2TB model current profiles  
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6.4  
POWER DISSIPATION  
6TB models in 6Gb operation  
for a drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical  
axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 4.  
6TB models (6Gb) DC current and power vs. input/output operations per second  
6TB models in 12Gb operation  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5.). Locate the typical I/O  
rate for a drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the  
vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 5.  
6TB models (12Gb) DC current and power vs. input/output operations per second  
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4TB models in 6Gb operation  
for a drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical  
axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 6.  
4TB models (6Gb) DC current and power vs. input/output operations per second  
4TB models in 12Gb operation  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5.). Locate the typical I/O  
rate for a drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the  
vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 7.  
4TB models (12Gb) DC current and power vs. input/output operations per second  
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2TB models in 6Gb operation  
for a drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical  
axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 8.  
2TB models (6Gb) DC current and power vs. input/output operations per second  
2TB models in 12Gb operation  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5.). Locate the typical I/O  
rate for a drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the  
vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 9.  
2TB models (12Gb) DC current and power vs. input/output operations per second  
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6.5  
ENVIRONMENTAL LIMITS  
Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and  
atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C).  
To maintain optimal performance drives should be run at nominal drive temperatures and humidity  
NOTE  
6.5.1 Temperature  
a. Operating  
The drive meets the operating specifications over a 41°F to 140°F (5°C to 60°C) drive case temperature range with a  
maximum temperature gradient of 36°F (20°C) per hour.  
The maximum allowable drive case temperature is 140°F (60°C).  
Air flow may be required to achieve consistent nominal case temperature values (see Section 10.2). To confirm that the  
required cooling is provided for the electronics and HDA, place the drive in its final mechanical configuration, and perform  
for HDA case temperature measurement location.  
b. Non-operating  
–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification  
assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.  
HDA Temp.  
Check Point  
Figure 10. Location of the HDA temperature check point  
Image is for reference only, may not represent actual drive.  
NOTE  
6.5.2 Humidity  
The values below assume that no condensation on the drive occurs. Maximum wet bulb temperature is 84.2°F (29°C).  
a. Operating  
5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.  
b. Non-operating  
5% to 95% non-condensing relative humidity.  
6.5.3 Effective altitude (sea level)  
a. Operating  
–1000 to +10,000 feet (–304.8 to +3048 meters)  
b. Non-operating  
–1000 to +40,000 feet (–304.8 to +12,192 meters)  
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6.5.4 Shock and vibration  
Shock and vibration limits specified in this document are measured directly on the drive chassis. If the drive is installed in an enclosure to  
which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure resulting in drive movement in  
excess of the stated limits. If this situation is apparent, it may be necessary to modify the enclosure to minimize drive movement.  
The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four methods shown in  
6.5.4.1 Shock  
a. Operating—normal  
The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding  
70 Gs (read) and 40 Gs (write) at a maximum duration of 2ms (half sinewave). Shock may be applied in the X, Y, or Z  
axis. Shock is not to be repeated more than once every 2 seconds.  
b. Operating—abnormal  
Equipment, as installed for normal operation, does not incur physical damage while subjected to intermittent shock not  
exceeding 40 Gs at a maximum duration of 11ms (half sinewave). Shock occurring at abnormal levels may promote  
degraded operational performance during the abnormal shock period. Specified operational performance will continue  
when normal operating shock levels resume. Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated  
more than once every 2 seconds.  
c. Non-operating  
The limits of non-operating shock shall apply to all conditions of handling and transportation. This includes both isolated  
drives and integrated drives.  
The drive subjected to nonrepetitive shock not exceeding 80 Gs at a maximum duration of 11ms (half sinewave) shall not  
exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.  
The drive subjected to nonrepetitive shock not exceeding 300 Gs at a maximum duration of 2ms (half sinewave) does not  
exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.  
The drive subjected to nonrepetitive shock not exceeding 200 Gs at a maximum duration of 0.5ms (half sinewave) does  
not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.  
d. Packaged  
Disk drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as  
defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or  
30191-001 (over 100 lbs/45 Kg).  
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PACKAGE SIZE  
PACKAGED/PRODUCT WEIGHT  
DROP HEIGHT  
<600 cu in (<9,800 cu cm)  
Any  
60 in (1524 mm)  
48 in (1219 mm)  
42 in (1067 mm)  
36 in (914 mm)  
600-1800 cu in (9,800-19,700 cu cm)  
>1800 cu in (>19,700 cu cm)  
>600 cu in (>9,800 cu cm)  
0-20 lb (0 to 9.1 kg)  
0-20 lb (0 to 9.1 kg)  
20-40 lb (9.1 to 18.1 kg)  
Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight  
shipment shall withstand a drop test from 48 in (1070 mm) against a concrete floor or equivalent.  
Z
X
Y
X
Z
Y
Figure 11. Recommended mounting  
Image is for reference only, may not represent actual drive.  
NOTE  
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6.5.4.2 Vibration  
a. Operating—normal  
The drive as installed for normal operation, shall comply with the complete specified performance while subjected to  
continuous vibration not exceeding  
5 - 22 Hz  
0.25 Gs, limited displacement  
22 - 350 Hz  
350 - 500 Hz  
0.5 Gs  
0.25 Gs  
Vibration may be applied in the X, Y, or Z axis.  
b. Operating—abnormal  
Equipment as installed for normal operation shall not incur physical damage while subjected to periodic vibration not  
exceeding:  
15 minutes of duration at major resonant frequency  
Vibration occurring at these levels may degrade operational performance during the abnormal vibration period. Specified  
operational performance will continue when normal operating vibration levels are resumed. This assumes system  
recovery routines are available.  
Operating abnormal translational random flat profile  
5-500 Hz @ 0.75 G (X, Y, or Z axis)  
c. Non-operating  
The limits of non-operating vibration shall apply to all conditions of handling and transportation. This includes both  
isolated drives and integrated drives.  
The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding  
5 - 22 Hz  
3 Gs (0 to peak, linear, swept sine, 0.5 octave/min)  
3 Gs (0 to peak, linear, swept sine, 0.5 octave/min)  
3 Gs (0 to peak, linear, swept sine, 0.5 octave/min)  
22 - 350 Hz  
350 - 500 Hz  
Vibration may be applied in the X, Y, or Z axis.  
6.5.5 Acoustics  
Sound power during idle mode shall be 2.8 bels typical when measured to ISO 7779 specification.  
Sound power while operating shall be 3.0 bels typical when measured to ISO 7779 specification.  
There will not be any discrete tones more than 9 dB above the masking noise when measured according to  
Seagate specification 30553-001.  
6.5.6 Air cleanliness  
The drive is designed to operate in a typical office environment with minimal environmental control.  
6.5.7 Corrosive environment  
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light industrial environments  
containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845. However, this accelerated testing cannot duplicate  
every potential application environment. Users should use caution exposing any electronic components to uncontrolled chemical pollutants  
and corrosive chemicals as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel  
and gold films used in Seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur is  
found to be the most damaging. In addition, electronic components should never be exposed to condensing water on the surface of the  
printed circuit board assembly (PCBA) or exposed to an ambient relative humidity greater than 95%. Materials used in cabinet fabrication,  
such as vulcanized rubber, that can outgas corrosive compounds should be minimized or eliminated. The useful life of any electronic  
equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.  
6.5.8 Electromagnetic susceptibility  
See Section 2.1.1.1.  
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6.6  
MECHANICAL SPECIFICATIONS  
6TB  
4TB  
2TB  
1.720 lb  
1.500 lb  
1.340 lb  
780 g  
680 g  
610 g  
Weight:  
NOTE  
in  
mm  
in  
mm  
in  
mm  
Figure 12. Mounting configuration dimensions (2TB & 4TB models)  
The image is for mechanical dimension reference only and may not represent the actual drive.  
NOTE  
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Figure 13. Mounting configuration dimensions (6TB models)  
The image is for mechanical dimension reference only and may not represent the actual drive.  
NOTE  
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7.0 ABOUT FIPS  
The Federal Information Processing Standard (FIPS) Publication 140-2 is a U.S. Government Computer Security Standard used to  
accredit cryptographic modules. It is titled 'Security Requirements for Cryptographic Modules (FIPS PUB 140-2)' and is issued by the  
National Institute of Standards and Technology (NIST).  
Purpose  
This standard specifies the security requirements that will be satisfied by a cryptographic module utilized within a security system protect-  
ing sensitive but unclassified information. The standard provides four increasing, qualitative levels of security: Level 1, Level 2, Level 3 and  
Level 4. These levels are intended to cover the wide range of potential applications and environments in which cryptographic modules may  
be employed.  
Validation Program  
Products that claim conformance to this standard are validated by the Cryptographic Module Validation Program (CMVP) which is a joint  
effort between National Institute of Standards and Technology (NIST) and the Communications Security Establishment (CSE) of the Gov-  
ernment of Canada. Products validated as conforming to FIPS 140-2 are accepted by the Federal agencies of both countries for the pro-  
tection of sensitive information (United States) or Designated Information (Canada).  
In the CMVP, vendors of cryptographic modules use independent, accredited testing laboratories to have their modules tested. National  
Voluntary Laboratory Accreditation Program (NVLAP) accredited laboratories perform cryptographic module compliance/conformance  
testing.  
Seagate Enterprise SED  
to satisfy FIPS 140-2 Level 2 requirements. In order to operate in FIPS Approved Mode of Operation, these SEDs require security initial-  
ization. For more information, refer to 'Security Rules' section in the 'Security Policy' document uploaded on the NIST website. To refer-  
Security Level 2  
Security Level 2 enhances the physical security mechanisms of a Security Level 1 cryptographic module by adding the  
requirement for tamper-evidence, which includes the use of tamper-evident coatings or seals on removable covers of the  
module. Tamper-evident coatings or seals are placed on a cryptographic module so that the coating or seal must be bro-  
ken to attain physical access to the critical security parameters (CSP) within the module. Tamper-evident seals (example  
shown in Figure 14, page 37) are placed on covers to protect against unauthorized physical access. In addition Security  
Level 2 requires, at a minimum, role-based authentication in which a cryptographic module authenticates the authorization  
of an operator to assume a specific role and perform a corresponding set of services.  
Figure 14. Example of FIPS tamper evidence labels.  
Image is for reference only, may not represent actual drive.  
NOTE  
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8.0 ABOUT SELF-ENCRYPTING DRIVES  
Self-encrypting drives (SEDs) offer encryption and security services for the protection of stored data, commonly known as “protection of  
data at rest.” These drives are compliant with the Trusted Computing Group (TCG) Enterprise Storage Specifications as detailed in Section  
The Trusted Computing Group (TCG) is an organization sponsored and operated by companies in the computer, storage and digital  
communications industry. Seagate’s SED models comply with the standards published by the TCG.  
To use the security features in the drive, the host must be capable of constructing and issuing the following two SCSI commands:  
• Security Protocol Out  
• Security Protocol In  
These commands are used to convey the TCG protocol to and from the drive in their command payloads.  
8.1  
DATA ENCRYPTION  
Encrypting drives use one inline encryption engine for each port, employing AES-256 data encryption in Cipher Block Chaining (CBC)  
mode to encrypt all data prior to being written on the media and to decrypt all data as it is read from the media. The encryption engines are  
always in operation and cannot be disabled.  
The 32-byte Data Encryption Key (DEK) is a random number which is generated by the drive, never leaves the drive, and is inaccessible to  
the host system. The DEK is itself encrypted when it is stored on the media and when it is in volatile temporary storage (DRAM) external to  
8.2  
CONTROLLED ACCESS  
The drive has two security providers (SPs) called the "Admin SP" and the "Locking SP." These act as gatekeepers to the drive security  
services. Security-related commands will not be accepted unless they also supply the correct credentials to prove the requester is  
authorized to perform the command.  
8.2.1 Admin SP  
available using the SID (Secure ID) password or the MSID (Manufacturers Secure ID) password.  
8.2.2 Locking SP  
The Locking SP controls read/write access to the media and the cryptographic erase feature. Access to the Locking SP is available using  
the BandMasterX or EraseMaster passwords. Since the drive owner can define up to 16 data bands on the drive, each data band has its  
own password called BandMasterX where X is the number of the data band (0 through 15).  
8.2.3 Default password  
When the drive is shipped from the factory, all passwords are set to the value of MSID. This 32-byte random value can only be read by the  
host electronically over the interface. After receipt of the drive, it is the responsibility of the owner to use the default MSID password as the  
authority to change all other passwords to unique owner-specified values.  
8.3  
RANDOM NUMBER GENERATOR (RNG)  
The drive has a 32-byte hardware RNG that it is uses to derive encryption keys or, if requested to do so, to provide random numbers to the  
host for system use, including using these numbers as Authentication Keys (passwords) for the drive’s Admin and Locking SPs.  
8.4  
DRIVE LOCKING  
bands.  
The variable "LockOnReset" should be set to "PowerCycle" to ensure that the data bands will be locked if power is lost. In addition  
"ReadLockEnabled" and "WriteLockEnabled" must be set to true in the locking table in order for the bands "LockOnReset" setting of  
"PowerCycle" to actually lock access to the band when a "PowerCycle" event occurs. This scenario occurs if the drive is removed from its  
cabinet. The drive will not honor any data read or write requests until the bands have been unlocked. This prevents the user data from  
being accessed without the appropriate credentials when the drive has been removed from its cabinet and installed in another system.  
When the drive is shipped from the factory, the firmware download port is unlocked.  
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8.5  
DATA BANDS  
When shipped from the factory, the drive is configured with a single data band called Band 0 (also known as the Global Data Band) which  
comprises LBA 0 through LBA max. The host may allocate Band1 by specifying a start LBA and an LBA range. The real estate for this  
band is taken from the Global Band. An additional 14 Data Bands may be defined in a similar way (Band2 through Band15) but before  
these bands can be allocated LBA space, they must first be individually enabled using the EraseMaster password.  
Data bands cannot overlap but they can be sequential with one band ending at LBA (x) and the next beginning at LBA (x+1).  
Each data band has its own drive-generated encryption key and its own user-supplied password. The host may change the Encryption Key  
(see Section 8.6) or the password when required. The bands should be aligned to 4K LBA boundaries.  
8.6  
CRYPTOGRAPHIC ERASE  
A significant feature of SEDs is the ability to perform a cryptographic erase. This involves the host telling the drive to change the data  
encryption key for a particular band. Once changed, the data is no longer recoverable since it was written with one key and will be read  
using a different key. Since the drive overwrites the old key with the new one, and keeps no history of key changes, the user data can  
never be recovered. This is tantamount to an instantaneous data erase and is very useful if the drive is to be scrapped or redispositioned.  
8.7  
AUTHENTICATED FIRMWARE DOWNLOAD  
In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts download files  
which have been cryptographically signed by the appropriate Seagate Design Center.  
Three conditions must be met before the drive will allow the download operation:  
1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.  
2. The download file must be signed and authenticated.  
3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it must be appli-  
cable to the correct drive model, and have compatible revision and customer status.  
8.8  
POWER REQUIREMENTS  
The standard drive models and the SED drive models have identical hardware, however the security and encryption portion of the drive  
controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about 30mA and  
a commensurate increase of about 150mW in power consumption. There is no additional drain on the 12V supply. See the tables in  
8.9  
SUPPORTED COMMANDS  
The SED models support the following two commands in addition to the commands supported by the standard (non-SED) models as listed  
in Table 8:  
• Security Protocol Out (B5h)  
• Security Protocol In (A2h)  
8.10 SANITIZE - CRYPTOGRAPHIC ERASE  
This command cryptographically erases all user data on the drive by destroying the current data encryption key and replacing it with a new  
data encryption key randomly generated by the drive. Sanitize CRYPTOGRAPHIC ERASE is a SCSI CDB Op code 48h and selecting the  
service action code 3 (CRYPTOGRAPHIC ERASE)  
8.11 REVERTSP  
SED models will support the RevertSP feature which erases all data in all bands on the device and returns the contents of all SPs (Security  
Providers) on the device to their original factory state. In order to execute the RevertSP method the unique PSID (Physical Secure ID)  
printed on the drive label must be provided. PSID is not electronically accessible and can only be manually read from the drive label or  
scanned in via the 2D barcode.  
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9.0 DEFECT AND ERROR MANAGEMENT  
Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data  
integrity, perform drive self-maintenance, and validate proper drive operation.  
SCSI defect and error management involves drive internal defect/error management and SAS system error considerations (errors in  
communications between the initiator and the drive). In addition, Seagate provides the following technologies used to increase data  
integrity and drive reliability:  
• Background Media Scan (see Section 9.4)  
• Media Pre-Scan (see Section 9.5)  
• Deferred Auto-Reallocation (see Section 9.6)  
• Idle Read After Write (see Section 9.7)  
The read error rates and specified storage capacities are not dependent on host (initiator) defect management routines.  
9.1  
DRIVE INTERNAL DEFECTS/ERRORS  
During the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their locations recorded  
on the drive primary defects list (referred to as the “P’ list and also as the ETF defect list). At factory format time, these known defects are  
also reallocated, that is, reassigned to a new place on the medium and the location listed in the defects reallocation table. The “P” list is not  
altered after factory formatting. Locations of defects found and reallocated during error recovery procedures after drive shipment are listed  
in the “G” list (defects growth list). The “P” and “G” lists may be referenced by the initiator using the Read Defect Data command.  
Details of the SCSI commands supported by the drive are described in the SAS Interface Manual. Also, more information on the drive Error  
Recovery philosophy is presented in the SAS Interface Manual.  
9.2  
DRIVE ERROR RECOVERY PROCEDURES  
When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to recover  
the data. The error recovery procedures used depend on the options previously set in the Error Recovery Parameters mode page. Error  
recovery and defect management may involve using several SCSI commands described in the SAS Interface Manual. The drive  
implements selectable error recovery time limits required in video applications.  
The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire command in addition  
to controlling the recovery level for a single LBA. The total amount of time spent in error recovery for a command can be limited using the  
Recovery Time Limit bytes in the Error Recovery mode page. The total amount of time spent in error recovery for a single LBA can be  
limited using the Read Retry Count or Write Retry Count bytes in the Error Recovery mode page.  
The drive firmware error recovery algorithms consist of 12 levels for read recoveries and five levels for write. Each level may consist of  
multiple steps, where a step is defined as a recovery function involving a single re-read or re-write attempt. The maximum level used by the  
drive in LBA recovery is determined by the read and write retry counts.  
Table 5 equates the read and write retry count with the maximum possible recovery time for read and write recovery of individual LBAs.  
The times given do not include time taken to perform reallocations. Reallocations are performed when the ARRE bit (for reads) or AWRE  
bit (for writes) is one, the RC bit is zero, and the recovery time limit for the command has not yet been met. Time needed to perform  
reallocation is not counted against the recovery time limit.  
When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data recovery  
actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive  
does not report any unrecovered errors.  
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Table 5 Read and write retry count maximum recovery times  
Maximum recovery time per  
Read retry count* LBA (cumulative, ms)  
Maximum recovery time per  
Write retry count  
LBA (cumulative, ms)  
0
35.94  
53.91  
79.89  
97.86  
175.85  
421.79  
1
124.32  
1
5
621.62  
2
10  
1243.23  
1864.85  
2486.47  
3
15  
4
20 (default)  
5 (default)  
* For read retry count, every tick ~ 5% of total error recovery. Valid range setting is 1-20.  
e.g. 1 ~ 5%  
5 ~ 25%  
20 ~ 100%  
Setting these retry counts to a value below the default setting could result in degradation of the unrecovered error rate. For example,  
suppose the read/write recovery page has the RC bit = 0 and if the read retry count is set to 5, this means ~ 25% of error recovery will be  
executed which consumes 621.62 ms (please refer to the table above). If the limit is reached and a LBA has not yet been recovered (i.e.  
requires retries beyond 621.62 ms), the command will end with Check Condition status report and unrecoverable read error will be  
reported.  
9.3  
SAS SYSTEM ERRORS  
Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual. The SSP Response  
returns information to the host about numerous kinds of errors or faults. The Receive Diagnostic Results reports the results of diagnostic  
operations performed by the drive.  
Status returned by the drive to the initiator is described in the SAS Interface Manual. Status reporting plays a role in systems error  
management and its use in that respect is described in sections where the various commands are discussed.  
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9.4  
BACKGROUND MEDIA SCAN  
Background Media Scan (BMS) is a self-initiated media scan. BMS is defined in the T10 document SPC-4 available from the T10  
committee. BMS performs sequential reads across the entire pack of the media while the drive is idle. In RAID arrays, BMS allows hot  
spare drives to be scanned for defects prior to being put into service by the host system. On regular duty drives, if the host system makes  
use of the BMS Log Page, it can avoid placing data in suspect locations on the media. Unreadable and recovered error sites will be logged  
or reallocated per ARRE/AWRE settings.  
With BMS, the host system can consume less power and system overhead by only checking BMS status and results rather than tying up  
the bus and consuming power in the process of host-initiated media scanning activity.  
Since the background scan functions are only done during idle periods, BMS causes a negligible impact to system performance. The first  
BMS scan for a newly manufactured drive is performed as quickly as possible to verify the media and protect data by setting the “Start time  
after idle” to 5ms, all subsequent scans begin after 500ms of idle time. Other features that normally use idle time to function will function  
normally because BMS functions for bursts of 800ms and then suspends activity for 100ms to allow other background functions to operate.  
BMS interrupts immediately to service host commands from the interface bus while performing reads. BMS will complete any BMS-initiated  
error recovery prior to returning to service host-initiated commands. Overhead associated with a return to host-servicing activity from BMS  
only impacts the first command that interrupted BMS, this results in a typical delay of about 1 ms.  
9.5  
MEDIA PRE-SCAN  
Media Pre-Scan is a feature that allows the drive to repair media errors that would otherwise have been found by the host system during  
critical data accesses early in the drive’s life. The default setting for Media Pre-Scan is enabled on standard products. Media Pre-Scan  
checks each write command to determine if the destination LBAs have been scanned by BMS. If the LBAs have been verified, the drive  
proceeds with the normal write command. If the LBAs have not been verified by BMS, Pre-Scan will convert the write to a write verify to  
certify that the data was properly written to the disk.  
During Pre-Scan write verify commands, write performance may decrease by 50% until Pre-Scan completes. Write  
performance testing should be performed after Pre-Scan is complete. This may be checked by reading the BMS status.  
NOTE  
To expedite the scan of the full pack and subsequently exit from the Pre-Scan period, BMS will begin scanning immediately when the drive  
goes to idle during the Pre-Scan period. In the event that the drive is in a high transaction traffic environment and is unable to complete a  
BMS scan within 24 power on hours BMS will disable Pre-Scan to restore full performance to the system.  
9.6  
DEFERRED AUTO-REALLOCATION  
Deferred Auto-Reallocation (DAR) simplifies reallocation algorithms at the system level by allowing the drive to reallocate unreadable  
locations on a subsequent write command. Sites are marked for DAR during read operations performed by the drive. When a write  
command is received for an LBA marked for DAR, the auto-reallocation process is invoked and attempts to rewrite the data to the original  
location. If a verification of this rewrite fails, the sector is re-mapped to a spare location.  
This is in contrast to the system having to use the Reassign Command to reassign a location that was unreadable and then generate a  
write command to rewrite the data. DAR is most effective when AWRE and ARRE are enabled—this is the default setting from the Seagate  
factory. With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that  
a write command is being attempted to a previously failing location.  
9.7  
IDLE READ AFTER WRITE  
Idle Read After Write (IRAW) utilizes idle time to verify the integrity of recently written data. During idle periods, no active system requests,  
the drive reads recently written data from the media and compares it to valid write command data resident in the drives data buffer. Any  
sectors that fail the comparison result in the invocation of a rewrite and auto-reallocation process. The process attempts to rewrite the data  
to the original location. If a verification of this rewrite fails, the sector is re-mapped to a spare location.  
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9.8  
PROTECTION INFORMATION (PI)  
Protection Information is intended as a standardized approach to system level LRC traditionally provided by systems using 520 byte for-  
matted LBAs. Drives formatted with PI information provide the same, common LBA count (i.e. same capacity point) as non-PI formatted  
drives. Sequential performance of a PI drive will be reduced by approximately 1.56% due to the extra overhead of PI being transferred  
from the media that is not calculated as part of the data transferred to the host. To determine the full transfer rate of a PI drive, transfers  
should be calculated by adding the 8 extra bytes of PI to the transferred LBA length, i.e. 512 + 8 = 520. PI formatted drives are physically  
formatted to 520 byte sectors that store 512 bytes of customer data with 8 bytes of Protection Information appended to it. The advantage  
of PI is that the Protection Information bits can be managed at the HBA and HBA driver level. Allowing a system that typically does not sup-  
port 520 LBA formats to integrate this level of protection.  
Protection Information is valid with any supported LBA size. 512 LBA size is used here as common example.  
9.8.1 Levels of PI  
There are 4 types of Protection Information.  
Type 0 - Describes a drive that is not formatted with PI information bytes. This allows for legacy support in non-PI systems.  
Type 1 - Provides support of PI protection using 10 and 16 byte commands. The RDPROTECT and WRTPROTECT bits allow for checking  
control through the CDB. Eight bytes of Protection Information are transmitted at LBA boundaries across the interface if RDPROTECT and  
WRTPROTECT bits are nonzero values. Type 1 does not allow the use of 32 byte commands.  
Type 2 - Provides checking control and additional expected fields within the 32 byte CDBs. Eight bytes of Protection Information are trans-  
mitted at LBA boundaries across the interface if RDPROTECT and WRTPROTECT bits are nonzero values. Type 2 does allow the use of  
10 and 16 byte commands with zero values in the RDPROTECT and WRTPROTECT fields. The drive will generate 8 bytes (e.g.0xFFFF)  
8 bytes of Protection Information to be stored on the media, but the 8 bytes will not be transferred to the host during a read command.  
Type 3 - Seagate products do not support Type 3.  
9.8.2 Setting and determining the current Type Level  
A drive is initialized to a type of PI by using the format command on a PI capable drive. Once a drive is formatted to a PI Type, it may be  
queried by a Read Capacity (16) command to report the PI type which it is currently formatted to. PI Types cannot coexist on a single drive.  
A drive can only be formatted to a single PI Type. It can be changed at anytime to a new Type but requires a low level format which  
destroys all existing data on the drive. No other vehicle for changing the PI type is provided by the T10 SBC3 specification.  
Type 1 PI format CDB command: 04 90 00 00 00 00, Write Buffer: 00 A0 00 00  
Type 2 PI format CDB command: 04 D0 00 00 00 00, Write Buffer: 00 A0 00 00  
9.8.3 Identifying a Protection Information drive  
The Standard Inquiry provides a bit to indicate if PI is support by the drive. Vital Product Descriptor (VPD) page 0x86 provides bits to indi-  
cate the PI Types supported and which PI fields the drive supports checking.  
For further details with respect to PI, please refer to SCSI Block  
Commands - 3 (SBC-3) Draft Standard documentation.  
NOTE  
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10.0 INSTALLATION  
Enterprise Capacity 3.5 HDD v4 disk drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the  
drive.  
SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to accommodate the  
drive. In such systems, the host system typically provides a carrier or tray into which users need to mount the drive. Mount the drive to the  
carrier or tray provided by the host system only using 6-32 UNC mounting screws. The screws should be inserted no more than 0.150 in  
(3.81mm) into the bottom or side mounting holes. When tightening the screws, do not overtighten use a maximum torque of 6 in-lb. Users  
can mount the drive in any orientation.  
SAS drives are designed to be attached to the host system without I/O or power cables. If users  
intend the use the drive in a non-backplane host system, connecting the drive using high-quality  
cables is acceptable as long as the I/O cable length does not exceed 4 meters (13.1 feet).  
NOTE  
Slide the carrier or tray into the appropriate bay in the host system using the instructions provided by the host system. This connects the  
drive directly to the system’s SAS connector. The SAS connector is normally located on a SAS backpanel. See Section 11.4.1 for  
additional information about these connectors.  
Power is supplied through the SAS connector.  
The drive is shipped from the factory low-level formatted in 512-byte logical blocks. Users need to reformat the drive only if selecting a  
different logical block size.  
Figure 15. Physical interface  
Image is for reference only, may not represent actual drive.  
NOTE  
10.1 DRIVE ORIENTATION  
The drive may be mounted in any orientation. All drive performance characterizations, however, have been done with the drive in  
horizontal (discs level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.  
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10.2 COOLING  
Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed  
The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disk assembly (HDA).  
Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6.5.1 in which case the drive  
should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics  
and HDA. Also, the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the  
drive and other heat sources within the rack, cabinet, or drawer environment.  
If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 16. The air-flow patterns are created by one or  
more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are  
Above unit  
Under unit  
Note. Air flows in the direction shown (back to front)  
or in reverse direction (front to back)  
Above unit  
Under unit  
Note. Air flows in the direction shown or  
in reverse direction (side to side)  
Figure 16. Air flow  
Image is for reference only, may not represent actual drive.  
NOTE  
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10.3 DRIVE MOUNTING  
Mount the drive using the bottom or side mounting holes. If mounting the drive using the bottom holes, ensure the drive is not physically  
distorted by attempting to mount it on a stiff, non-flat surface.  
The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable mounting  
surface stiffness:  
K x X = F < 15lb = 67N  
where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distortion (units in inches or millimeters).  
The out-of-plane distortion (X) is determined by defining a plane with three of the four mounting points fixed and evaluating the out-of-plane  
deflection of the fourth mounting point when a known force (F) is applied to the fourth point.  
Do not cover breather hole on top cover.  
NOTE  
Breather Hole  
Do Not  
Cover  
Breather hole location - top cover  
10.4 GROUNDING  
Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The equipment in which  
the drive is mounted is connected directly to the HDA and PCBA with no electrically isolating shock mounts. If it is desired for the system  
chassis to not be connected to the HDA/PCBA ground, the systems integrator or user must provide a nonconductive (electrically isolating)  
method of mounting the drive in the host equipment.  
Increased radiated emissions may result if users do not provide the maximum surface area ground connection between system ground  
and drive ground. This is the system designer’s and integrator’s responsibility.  
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11.0 INTERFACE REQUIREMENTS  
This section partially describes the interface requirements as implemented on Enterprise Capacity 3.5 HDD v4 drives. Additional  
information is provided in the SAS Interface Manual (part number 100293071).  
11.1 SAS FEATURES  
This section lists the SAS-specific features supported by Enterprise Capacity 3.5 HDD v4 drives.  
11.1.1 task management functions  
Table 6 SAS task management functions supported  
TASK NAME  
Abort Task  
SUPPORTED  
Yes  
Clear ACA  
Yes  
Clear task set  
Abort task set  
Logical Unit Reset  
Query Task  
Yes  
Yes  
Yes  
Yes  
11.1.2 task management responses  
Table 7 Task management response codes  
FUNCTION NAME  
Function complete  
Invalid frame  
RESPONSE CODE  
00  
02  
04  
05  
08  
09  
Function not supported  
Function failed  
Function succeeded  
Invalid logical unit  
11.2 DUAL PORT SUPPORT  
Enterprise Capacity 3.5 HDD v4 SAS drives have two independent ports. These ports may be connected in the same or different SCSI  
domains. Each drive port has a unique SAS address.  
The two ports have the capability of independent port clocking (e.g. both ports can run at 12Gb/s or the first port can run at 6Gb/s while the  
second port runs at 3Gb/s.) The supported link rates are 3.0, 6.0, or 12.0 Gb/s.  
Subject to buffer availability, the Enterprise Capacity 3.5 HDD v4 drives support:  
• Concurrent port transfers—The drive supports receiving COMMAND, TASK management transfers on both ports at the same time.  
• Full duplex—The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving frames on both ports.  
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11.3 SCSI COMMANDS SUPPORTED  
Table 8 lists the SCSI commands supported by Enterprise Capacity 3.5 HDD v4 drives.  
Table 8 Supported commands  
COMMAND NAME  
COMMAND CODE  
SUPPORTED  
Change Definition  
40h  
39h  
18h  
3Ah  
04h  
N
N
N
N
Y
Y
N
Y
Y
Y
N
Y
N
Y
Y
Compare  
Copy  
Copy and Verify  
DCRT bit supported  
DPRY bit supported  
DSP bit supported  
IMMED bit supported  
IP bit supported  
SI (Security Initialize) bit supported  
STPF bit supported  
VS (vendor specific)  
Inquiry  
12h  
Block Device Characteristics (B1h)  
Block Limits (B0h)  
Y
Date Code page (C1h)  
Device Behavior page (C3h)  
Device Identification (83h)  
Extended Inquiry Data (86h)  
Firmware Numbers page (C0h)  
Implemented Operating Def page (81h)  
Jumper Settings page (C2h)  
Logical Block Provisioning (B2h)  
Mode Page Policy (87h)  
Power Condition (8Ah)  
Protocol Specific Logical Unit Information (90h)  
Protocol Specific Port Information (91h)  
SCSI Ports (88h)  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Supported Vital Product Data page (00h)  
Unit Serial Number page (80h)  
Lock-unlock cache  
Log Select  
Y
Y
N
Y
Y
N
Y
Y
N
N
N
Y
36h  
4Ch  
PCR bit  
DU bit  
DS bit  
TSD bit  
ETC bit  
TMC bit  
LP bit  
Log Sense  
4Dh  
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Table 8 Supported commands  
COMMAND NAME  
COMMAND CODE  
SUPPORTED  
Application Client Log page (0Fh)  
Buffer Over-run/Under-run page (01h)  
Cache Statistics page (37h)  
Factory Log page (3Eh)  
N
N
Y
Y
Information Exceptions Log page (2Fh)  
Last n Deferred Errors or Asynchronous Events page (0Bh)  
Last n Error Events page (07h)  
Non-medium Error page (06h)  
Pages Supported list (00h)  
N
N
N
Y
Y
Read Error Counter page (03h)  
Read Reverse Error Counter page (04h)  
Self-test Results page (10h)  
Start-stop Cycle Counter page (0Eh)  
Temperature page (0Dh)  
Y
N
Y
Y
Y
Verify Error Counter page (05h)  
Write error counter page (02h)  
Mode Select (same pages as Mode Sense 1Ah)  
Mode Select (10) (same pages as Mode Sense 1Ah)  
Mode Sense  
Y
Y
15h  
55h  
1Ah  
Y [2]  
Y
Y [2]  
Y
Caching Parameters page (08h)  
Control Mode page (0Ah)  
Y
Disconnect/Reconnect (02h)  
Error Recovery page (01h)  
Y
Y
Format page (03h)  
Y
Information Exceptions Control page (1Ch/01h)  
Background Scan mode subpage (01h)  
Notch and Partition Page (0Ch)  
Protocol-Specific Port page (19h)  
Power Condition page (1Ah)  
Rigid disk Drive Geometry page (04h)  
Unit Attention page (00h)  
Y
Y
N
Y
Y
Y
Y
Verify Error Recovery page (07h)  
Xor Control page (10h)  
Y
N
Y
Mode Sense (10) (same pages as Mode Sense 1Ah)  
Persistent Reserve In  
5Ah  
5Eh  
5Fh  
34h  
Y
Persistent Reserve Out  
Y
Prefetch (10)  
N
Prefetch (16)  
90h  
N.A.  
Y
Read (6)  
08h  
28h  
Read (10)  
Y
DPO bit supported  
Y
FUA bit supported  
Y
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Table 8 Supported commands  
COMMAND NAME  
COMMAND CODE  
SUPPORTED  
Read (12)  
A8h  
N
Read (16)  
88h  
Y
Read (32)  
7Fh/0009h  
3Ch  
N
Read Buffer (modes 0, 2, 3, Ah and Bh supported)  
Read Capacity (10)  
Read Capacity (16)  
Read Defect Data (10)  
Read Defect Data (12)  
Read Long  
Y (non-SED drives only)  
25h  
Y
9Eh/10h  
37h  
Y
Y
B7h  
Y
3Eh  
Y (non-SED drives only)  
Read Long (16)  
9Eh/11h  
07h  
Y
Reassign Blocks  
Y
Receive Diagnostic Results  
Supported Diagnostics pages (00h)  
Translate page (40h)  
Release  
1Ch  
Y
Y
Y
17h  
57h  
A0h  
03h  
Y
Release (10)  
Y
Report LUNs  
Y
Request Sense  
Y
Actual Retry Count bytes  
Extended Sense  
Y
Y
Field Pointer bytes  
Reserve  
Y
16h  
56h  
Y
3rd Party Reserve  
Extent Reservation  
Reserve (10)  
Y
N
Y
3rd Party Reserve  
Extent Reservation  
Rezero Unit  
Y
N
01h  
48h  
48h  
31h  
30h  
32h  
A2h  
B5h  
0Bh  
2Bh  
1Dh  
Y
Sanitize (CRYPTOGRAPHIC ERASE)  
Sanitize (OVERWRITE)  
Search Data Equal  
Search Data High  
Search Data Low  
Y (SED drives only)  
Y
N
N
N
Security Protocol In  
Security Protocol Out  
Seek (6)  
Y (SED models only)  
Y (SED models only)  
Y
Y
Y
Y
Y
N
Y
Seek (10)  
Send Diagnostics  
Supported Diagnostics pages (00h)  
Translate page (40h)  
Set Limits  
33h  
1Bh  
Start Unit/Stop Unit (spindle ceases rotating)  
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Table 8 Supported commands  
COMMAND NAME  
COMMAND CODE  
SUPPORTED  
Synchronize Cache  
Synchronize Cache (16)  
Test Unit Ready  
Verify (10)  
35h  
91h  
00h  
2Fh  
Y
Y
Y
Y
Y
N
Y
BYTCHK bit  
Verify (12)  
AFh  
Verify (16)  
AFh  
N (Supported if formatted for  
type 2 protection information)  
Verify (32)  
7Fh/000Ah  
Write (6)  
Write (10)  
DPO bit  
0Ah  
2Ah  
Y
Y
Y
Y
N
Y
FUA bit  
Write (12)  
Write (16)  
Write (32)  
AAh  
8Ah  
N (Supported if formatted for  
type 2 protection information)  
7Fh/000Bh  
Write and Verify (10)  
DPO bit  
2Eh  
Y
Y
N
Y
Write and Verify (12)  
Write and Verify (16)  
Write and Verify (32)  
AEh  
8Eh  
N (Supported if formatted for  
type 2 protection information)  
7Fh/000Ch  
Write Buffer (modes 0, 2, supported)  
3Bh  
3Bh  
Y (non-SED drives only)  
Write Buffer  
Firmware Download option (modes 5, 7, Ah and Bh) [3]  
Y (non-SED drives only)  
Firmware Download option (modes 4, 5, 7)  
Y (SED drives only)  
Write Long (10)  
Write Long (16)  
PBdata  
3Fh  
Y
Y
Y
N
N
Y
N
N
N
N
9Fh/11h  
41h  
LBdata  
Write Same (32)  
XDRead  
93h  
7Fh/000Dh  
52h  
XDWrite  
50h  
XPWrite  
51h  
[1] Enterprise Capacity 3.5 HDD v4 drives can format to 512, 520 or 528 bytes per logical block.  
[2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.  
[3] Reference Mode Sense command 1Ah for mode pages supported.  
[4] Y = Yes. Command is supported.  
N = No. Command is not supported.  
A = Support is available on special request.  
[5] Approximately 1.5 increase in time to complete this command for a SED drive versus a non-SED drive of the same capacity.  
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11.3.1 Inquiry data  
Table 9 Enterprise Capacity 3.5 HDD v4 inquiry data  
BYTES  
DATA (HEX)  
0-15  
00  
[53  
R#  
00  
00  
00  
00  
00  
54  
R#  
00  
00  
00  
43  
xx** 12  
8B  
30  
S#  
00  
00  
00  
79  
53  
74  
00  
30  
S#  
00  
00  
00  
72  
65  
73  
30  
4E  
S#  
00  
00  
00  
69  
61  
20  
02  
4D  
S#  
00  
00  
00  
67  
67  
72  
53  
30  
S#  
00  
00  
00  
68  
61  
65  
45  
30  
S#  
00  
00  
00  
74  
74  
73  
41  
31  
S#  
00  
00  
00  
20  
65  
65  
47  
34}  
S#  
00  
00  
00  
28  
20  
72  
41  
20  
00  
00  
00  
00  
63  
41  
76  
54  
20  
00  
00  
00  
00  
29  
6C  
65  
45  
20  
00  
00  
00  
00  
20  
6C  
64  
20  
20  
00  
00  
00  
00  
Vendor ID  
Product ID  
16-31  
32-47  
48-63  
64-79  
80-95  
96-111  
112-127  
128-143  
36  
R#  
00  
00  
00  
6F  
30  
R#  
00  
00  
00  
70  
20  
68  
32* *Copyright  
30* 31* 33*  
72 69 67  
20  
20  
notice  
*
Copyright year (changes with actual year).  
SCSI Revision support. See the appropriate SPC release documentation for definitions.  
**  
PP 10 = Inquiry data for an Inquiry command received on Port A.  
30 = Inquiry data for an Inquiry command received on Port B.  
R# Four ASCII digits representing the last four digits of the product firmware release number.  
S# Eight ASCII digits representing the eight digits of the product serial number.  
[ ]  
Bytes 16 through 26 reflect model of drive. The table above shows the hex values for Model ST6000NM0014.  
Refer to the values below for the values of bytes 16 through 26 of a particular model:  
ST4000NM0014  
ST2000NM0014  
ST6000NM0034  
ST4000NM0034  
ST2000NM0034  
ST6000NM0074  
ST4000NM0074  
ST2000NM0074  
ST6000NM0054  
ST4000NM0054  
ST2000NM0054  
ST6000NM0104  
ST6000NM0114  
53 54 34 30 30 30 4E 4D 30 30 31 34  
53 54 32 30 30 30 4E 4D 30 30 31 34  
53 54 36 30 30 30 4E 4D 30 30 33 34  
53 54 34 30 30 30 4E 4D 30 30 33 34  
53 54 32 30 30 30 4E 4D 30 30 33 34  
53 54 36 30 30 30 4E 4D 30 30 37 34  
53 54 34 30 30 30 4E 4D 30 30 37 34  
53 54 32 30 30 30 4E 4D 30 30 37 34  
53 54 36 30 30 30 4E 4D 30 30 35 34  
53 54 34 30 30 30 4E 4D 30 30 35 34  
53 54 32 30 30 30 4E 4D 30 30 35 34  
53 54 36 30 30 30 4E 4D 30 31 30 34  
53 54 36 30 30 30 4E 4D 30 31 31 34  
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11.3.2 Mode Sense data  
The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The drive maintains four sets of  
mode parameters:  
1. Default values  
Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the drive’s PCB.  
These default values can be changed only by downloading a complete set of new firmware into the flash E-PROM. An  
initiator can request and receive from the drive a list of default values and use those in a Mode Select command to set up  
new current and saved values, where the values are changeable.  
2. Saved values  
Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that are allowed to  
be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode  
Select command get their values from default values storage.  
When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile  
memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the  
drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status.  
On drives requiring unique saved values, the required unique saved values are stored into the saved values storage  
location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.  
On standard OEM drives, the saved values are taken from the default values list and stored into the saved values stor-  
age location on the media prior to shipping.  
3. Current values  
Current values are volatile values being used by the drive to control its operation. A Mode Select command can be used  
to change the values identified as changeable values. Originally, current values are installed from saved or default val-  
ues after a power on reset, hard reset, or Bus Device Reset message.  
4. Changeable values  
Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved  
values can be changed by a Mode Select command. A one (1) indicates the value can be changed. A zero (0) indicates  
the value is not changeable. For example, in Table 10, refer to Mode page 81, in the row entitled “CHG.” These are hex  
numbers representing the changeable values for Mode page 81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h  
which indicates that in bytes 04 and 05 none of the bits are changeable. Note also that bytes 06, 07, 09, 10, and 11 are  
not changeable, because those fields are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If  
there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones,  
all of these bits are changeable.  
The changeable values list can only be changed by downloading new firmware into the flash E-PROM.  
Because there are often several different versions of drive control firmware in the total population of drives in  
the field, the Mode Sense values given in the following tables may not exactly match those of some drives.  
NOTE  
The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI  
implementation (see the SAS Interface Manual).  
DEF = Default value. Standard OEM drives are shipped configured this way.  
CHG = Changeable bits; indicates if default value is changeable.  
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Table 10 Mode Sense data changeable and default values for 6TB drives  
BLOCK DESCRIPTOR:  
00 00 00 02 BA A0 F4 B0 00 00 00 00 00 00 02 00(512E)  
00 00 00 00 57 54 1E 96 00 00 00 00 00 00 10 00(4K)  
MODE PAGES:  
DEF: 00 0A 00 80 0F 00 00 00 00 00 00 00  
CHG: 00 0A B7 C0 8F 00 00 00 00 00 FF FF  
DEF: 01 0A C0 14 FF 00 00 00 05 00 FF FF  
CHG: 01 0A FF FF 00 00 00 00 FF 00 FF FF  
DEF: 02 0E 00 00 00 00 00 00 00 00 00 A0 00 00 00 00  
CHG: 02 0E 00 00 FF FF 00 00 FF FF FF FF 00 00 00 00  
DEF: 03 16 00 01 00 00 00 00 00 02 00 03 10 00 00 01 00 00 00 00 40 00 00 00  
CHG: 03 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF: 04 16 00 00 04 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 00 00  
CHG: 04 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF: 07 0A 00 14 FF 00 00 00 00 00 FF FF  
CHG: 07 0A 0F FF 00 00 00 00 00 00 FF FF  
DEF: 08 12 14 00 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 00  
CHG: 08 12 A5 00 00 00 FF FF FF FF 00 00 20 00 00 00 00 00 00 00  
DEF: 0A 0A 02 00 00 80 00 00 00 00 8D 18  
CHG: 0A 0A 0F F6 00 00 00 00 00 00 00 00  
DEF: 18 06 06 00 00 00 00 00  
CHG: 18 06 00 00 00 00 00 00  
DEF: 19 0E 46 00 07 D0 00 00 00 00 00 00 00 00 00 00  
CHG: 19 0E 50 00 FF FF FF FF FF FF 00 00 00 00 00 00  
DEF: 1A 26 00 06 00 00 04 B0 00 00 23 28 00 00 09 60 00 00 17 70 00 00 17 70 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 58  
CHG: 1A 26 01 0F FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 00 FC  
DEF: 1C 0A 10 00 00 00 00 00 00 00 00 01  
CHG: 1C 0A 9D 0F FF FF FF FF FF FF FF FF  
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Table 11 Mode Sense data changeable and default values for 4TB drives  
BLOCK DESCRIPTOR:  
00 00 00 01 D1 C0 BE B0 00 00 00 00 00 00 02 00(512E)  
00 00 00 00 3A 38 17 D6 00 00 00 00 00 00 10 00(4K)  
MODE PAGES:  
DEF: 00 0A 00 80 0F 00 00 00 00 00 00 00  
CHG: 00 0A B7 C0 8F 00 00 00 00 00 FF FF  
DEF: 01 0A C0 14 FF 00 00 00 05 00 FF FF  
CHG: 01 0A FF FF 00 00 00 00 FF 00 FF FF  
DEF: 02 0E 00 00 00 00 00 00 00 00 00 A0 00 00 00 00  
CHG: 02 0E 00 00 FF FF 00 00 FF FF FF FF 00 00 00 00  
DEF: 03 16 00 01 00 00 00 00 00 02 00 03 10 00 00 01 00 00 00 00 40 00 00 00  
CHG: 03 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF: 04 16 00 00 04 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 00 00  
CHG: 04 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF: 07 0A 00 14 FF 00 00 00 00 00 FF FF  
CHG: 07 0A 0F FF 00 00 00 00 00 00 FF FF  
DEF: 08 12 14 00 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 00  
CHG: 08 12 A5 00 00 00 FF FF FF FF 00 00 20 00 00 00 00 00 00 00  
DEF: 0A 0A 02 00 00 80 00 00 00 00 5E EC  
CHG: 0A 0A 0F F6 00 00 00 00 00 00 00 00  
DEF: 18 06 06 00 00 00 00 00  
CHG: 18 06 00 00 00 00 00 00  
DEF: 19 0E 46 00 07 D0 00 00 00 00 00 00 00 00 00 00  
CHG: 19 0E 50 00 FF FF FF FF FF FF 00 00 00 00 00 00  
DEF: 1A 26 00 06 00 00 04 B0 00 00 23 28 00 00 09 60 00 00 17 70 00 00 17 70 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 58  
CHG: 1A 26 01 0F FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 00 FC  
DEF: 1C 0A 10 00 00 00 00 00 00 00 00 01  
CHG: 1C 0A 9D 0F FF FF FF FF FF FF FF FF  
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Table 12 Mode Sense data changeable and default values for 2TB drives  
BLOCK DESCRIPTOR:  
00 00 00 00 E8 E0 88 B0 00 00 00 00 00 00 02 00(512E)  
00 00 00 00 1D 1C 11 16 00 00 00 00 00 00 10 00(4K)  
MODE PAGES:  
DEF: 00 0A 00 80 0F 00 00 00 00 00 00 00  
CHG: 00 0A B7 C0 8F 00 00 00 00 00 FF FF  
DEF: 01 0A C0 14 FF 00 00 00 05 00 FF FF  
CHG: 01 0A FF FF 00 00 00 00 FF 00 FF FF  
DEF: 02 0E 00 00 00 00 00 00 00 00 00 A0 00 00 00 00  
CHG: 02 0E 00 00 FF FF 00 00 FF FF FF FF 00 00 00 00  
DEF: 03 16 00 01 00 00 00 00 00 02 00 03 10 00 00 01 00 00 00 00 40 00 00 00  
CHG: 03 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF: 04 16 00 00 04 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 00 00  
CHG: 04 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF: 07 0A 00 14 FF 00 00 00 00 00 FF FF  
CHG: 07 0A 0F FF 00 00 00 00 00 00 FF FF  
DEF: 08 12 14 00 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 00  
CHG: 08 12 A5 00 00 00 FF FF FF FF 00 00 20 00 00 00 00 00 00 00  
DEF: 0A 0A 02 00 00 80 00 00 00 00 35 AC  
CHG: 0A 0A 0F F6 00 00 00 00 00 00 00 00  
DEF: 18 06 06 00 00 00 00 00  
CHG: 18 06 00 00 00 00 00 00  
DEF: 19 0E 46 00 07 D0 00 00 00 00 00 00 00 00 00 00  
CHG: 19 0E 50 00 FF FF FF FF FF FF 00 00 00 00 00 00  
DEF: 1A 26 00 06 00 00 04 B0 00 00 23 28 00 00 09 60 00 00 17 70 00 00 17 70 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 58  
CHG: 1A 26 01 0F FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 00 FC  
DEF: 1C 0A 10 00 00 00 00 00 00 00 00 01  
CHG: 1C 0A 9D 0F FF FF FF FF FF FF FF FF  
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11.4 MISCELLANEOUS OPERATING FEATURES AND CONDITIONS  
Table 13 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An “N” in the  
support column indicates the feature or condition is not supported.  
Table 13 Miscellaneous features  
SUPPORTED  
FEATURE OR CONDITION  
N
N
N
Y
N
Y
Y
Y
Y
N
Y
Automatic contingent allegiance  
Asynchronous event notification  
Synchronized (locked) spindle operation  
Segmented caching  
Zero latency read  
Queue tagging (up to 64 queue tags supported)  
Deferred error handling  
Parameter rounding (controlled by Round bit in Mode Select page 0)  
Reporting actual retry count in Extended Sense bytes 15, 16, and 17  
Adaptive caching  
SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes  
Table 14 Miscellaneous status  
SUPPORTED  
STATUS  
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Good  
Check condition  
Condition met/good  
Busy  
Intermediate/good  
Intermediate/condition met/good  
Reservation conflict  
Task set full  
ACA active  
ACA active, faulted initiator  
11.4.1 SAS physical interface  
Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of Seagate’s SAS  
drives are provided in the SAS Interface Manual.  
Figure 17. Physical interface  
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0.80 (6X)  
5.92  
7.62  
4.65  
0.52 0.08 x 45  
2.00 (3X)  
0.45 0.03 (7X)  
0.10 M E  
5.08  
42.73 REF.  
41.13 0.15  
0.20B  
0.30 0.05 (2X)  
C
A
B
1.10  
4.00 0.08  
0.15D  
C OF DATUM D  
L
R0.30 0.08 (4X)  
A
0.30 0.05 (4X)  
B
C
SEE Detail1  
B
33.43 0.05  
15.875  
15.875  
1.27 (14X)  
1.27 (6X)  
0.84 0.05 (22X)  
5.08  
0.15B  
4.90 0.08  
0.35MIN  
P15  
S1  
P1  
S7  
C OF DATUM B  
L
Figure 18. SAS device plug dimensions  
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Detail A  
6.10  
S14  
S8  
0.30 0.05 x 45 (5X)  
2.25 0.05  
0.40 0.05 X 45 (3X)  
4.85 0.05  
0.10B  
CORING ALLOWED  
IN THIS AREA.  
E
4.40 0.15  
R0.30 0.08  
45  
C
SEE Detail 2  
1.95 0.08  
A
0.35 0.05  
SECTION C - C  
3.90 0.15  
SECTION A - A  
CONTACT SURFACE FLUSH  
TO DATUM A 0.03  
0.08 0.05  
65  
1.90 0.08  
1.23 0.05  
0.08 0.05  
30  
Detail 2  
2.40 0.08  
0.10 A  
SECTION B - B  
D
Figure 19. SAS device plug dimensions (detail)  
11.4.2 Physical characteristics  
This section defines physical interface connector.  
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11.4.3 Connector requirements  
Contact the preferred connector manufacturer for mating part information. Part numbers for SAS connectors will be provided in a future  
revision of this publication when production parts are available from major connector manufacturers.  
11.4.4 Electrical description  
SAS drives use the device connector for:  
• DC power  
• SAS interface  
• Activity LED  
This connector is designed to either plug directly into a backpanel or accept cables.  
11.4.5 Pin descriptions  
This section provides a pin-out of the SAS device and a description of the functions provided by the pins.  
Table 15 SAS pin descriptions  
PIN  
S1  
SIGNAL NAME  
Port A Ground  
+Port A_in  
SIGNAL TYPE  
PIN  
P1*  
P2*  
P3  
SIGNAL NAME  
SIGNAL TYPE  
NC (reserved 3.3Volts)  
S2*  
S3*  
S4  
Diff. input pair  
NC (reserved 3.3Volts)  
SAS Power Disable **  
-Port A_in  
Port A Ground  
-Port A_out  
P4  
Ground  
S5*  
S6*  
S7  
Diff output pair  
P5  
Ground  
+Port A_out  
Port A Ground  
Port B Ground  
+Port B_in  
P6  
Ground  
P7  
5 Volts charge  
5 Volts  
S8  
P8*  
P9*  
P10  
P11*  
P12  
P13  
P14*  
P15*  
S9*  
S10*  
S11  
S12*  
S13*  
S14  
Diff. input pair  
Diff output pair  
5 Volts  
-Port B_in  
Ground  
Port A Ground  
-Port B_out  
+Port B_out  
Port B Ground  
Ready LED  
Ground  
Open collector out  
12 Volts charge  
12 Volts  
12 Volts  
* - Short pin to support hot plugging  
** - Power Disable (T10 Industry Standard) for remote management of the end device. Allows power cycling / power saving to be controlled  
by the host via interface pin 3.  
NC - No connection in the drive.  
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11.4.6 SAS transmitters and receivers  
A typical SAS differential copper transmitter and receiver pair is shown in Figure 20. The receiver is AC coupling to eliminate ground shift  
noise.  
.01  
TX  
TY  
RX  
Differential  
Transfer Medium  
Transmitter  
100  
Receiver  
100  
RY  
.01  
Figure 20. SAS transmitters and receivers  
11.4.7 Power  
The drive receives power (+5 volts and +12 volts) through the SAS device connector.  
Three +12 volt pins provide power to the drive, 2 short and 1 long. The current return for the +12 volt power supply is through the common  
ground pins. The supply current and return current must be distributed as evenly as possible among the pins.  
Three +5 volt pins provide power to the drive, 2 short and 1 long. The current return for the +5 volt power supply is through the common  
ground pins. The supply current and return current must be distributed as evenly as possible among the pins.  
Current to the drive through the long power pins may be limited by the system to reduce inrush current to the drive during hot plugging.  
11.5 SIGNAL CHARACTERISTICS  
This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 15 for signal type and signal  
name information.  
11.5.1 Ready LED Out  
Table 16 Ready LED Out conditions  
NORMAL COMMAND ACTIVITY  
LED STATUS  
0
1
Ready LED Meaning bit mode page 19h  
Spun down and no activity  
Off  
On  
On  
Off  
Off  
On  
Off  
On  
Spun down and activity (command executing)  
Spun up and no activity  
Spun up and activity (command executing)  
Spinning up or down  
Blinks steadily  
(50% on and 50% off, 0.5 seconds on and off for 0.5 seconds)  
Format in progress, each cylinder change  
Toggles on/off  
The Ready LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +3.3 volt supply through  
an appropriate current limiting resistor. The LED and the current limiting resistor are external to the drive. See Table 17 for the output  
characteristics of the LED drive signals.  
Table 17 LED drive signal  
STATE  
TEST CONDITION  
OUTPUT VOLTAGE  
LED off, high  
0 V VOH 3.6 V  
-100 μA < I < 100 μA  
OH  
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Table 17 LED drive signal  
STATE  
TEST CONDITION  
= 15 mA  
OUTPUT VOLTAGE  
LED on, low  
I
0 VOL 0.225 V  
OL  
11.5.2 Differential signals  
The drive SAS differential signals comply with the intra-enclosure (internal connector) requirements of the SAS standard.  
Table 18 defines the general interface characteristics.  
Table 18 General interface characteristics  
CHARACTERISTIC  
UNITS  
1.5GB/S  
3.0GB/S  
6.0GB/S  
12 Gbps  
Bit rate (nominal)  
Mbaud  
ps  
1,500  
666.6  
100  
3,000  
333.3  
100  
6,000  
166.6  
100  
12000  
83.3  
Unit interval (UI)(nominal)  
Impedance (nominal, differential )  
Transmitter transients, maximum  
Receiver transients, maximum  
ohm  
V
100  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
V
11.6 SAS-3 SPECIFICATION COMPLIANCE  
Seagate SAS-3 compatible drives are compliant with the latest SAS-3 Specification (T10/BSR INCITS 519 rev. 06).  
The main difference from SAS-2 is the Tx and Rx training that allows the host and drive to adjust the amplitude and emphasis values to the  
channel. The receiver still employs Decision Feedback Equalizer (DFE) and Feed Forward Equalizer (FFE) circuitry to accomplish this  
training.  
1. A Decision Feedback Equalizer (DFE) which utilizes the standard SAS-2 training pattern transmitted during the SNW-3  
training gap. The DFE circuit can derive an optimal equalization characteristic to compensate for many of the receive  
losses in the system.  
2. A Feed Forward Equalizer (FFE) optimized to provide balanced receive margins over a range of channels bounded by  
the best and worst case channels as defined by the relevant ANSI standard.  
11.7 ADDITIONAL INFORMATION  
Please contact the Seagate representative for SAS electrical details, if required.  
For more information about the Phy, Link, Transport, and Applications layers of the SAS interface, refer to the Seagate SAS Interface  
Manual, part number 100293071.  
For more information about the SCSI commands used by Seagate SAS drives, refer to the Seagate SCSI Commands Reference Manual,  
part number 100293068.  
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C
Index  
cache operation 11  
cache segments 11  
caching write data 12  
Canada ICES-003 4  
Canadian Department of Communications 3  
capacity  
Numerics  
12 volt  
pins 61  
5 volt pins 61  
unformatted 10  
CBC 38  
CE Marking 4  
A
abort task set function 47  
AC coupling 61  
AC power requirements 20  
ACA active status 57  
ACA active, faulted initiator status 57  
acoustics 34  
check condition status 57  
China RoHS directive 5  
Cipher Block Chaining 38  
class B limit 3  
clear ACA function 47  
clear task set function 47  
commands supported 48  
condensation 31  
active LED Out signal 61  
actuator 9  
assembly design 7  
condition met/good status 57  
connector  
adaptive caching 57  
Admin SP 38  
AES-128 data encryption 38  
air cleanliness 34  
illustrated 60  
requirements 60  
continuous vibration 34  
cooling 45  
CRC  
air flow 45  
illustrated 45  
air inlet 45  
altitude 31  
ambient 31  
ambient temperature 45  
Annualized Failure Rate (AFR) 14  
ANSI documents  
error 13  
Cryptographic erase 39  
cryptographic erase 39  
Current profiles 25  
customer service 18  
Serial Attached SCSI 6  
asynchronous event notification 57  
audible noise 3  
D
DAR 42  
Australian RCM Mark 4  
auto write and read reallocation  
programmable 8  
Data Bands 39  
data bands 38  
data block size  
automatic contingent allegiance 57  
average idle current 21, 22, 23  
average rotational latency 10  
modifing the 9  
data buffer to/from disk media 10  
Data encryption 38  
Data Encryption Key 38  
data heads  
read/write 10  
data rate  
internal 10  
data transfer rate 10  
DC power 60  
requirements 20  
Decision Feedback Equalizer 62  
decrypt 38  
default MSID password 38  
defect and error management 40  
defects 40  
Deferred Auto-Reallocation 42  
deferred error handling 57  
B
Background Media Scan 42  
backpanel 60  
Band 0 39  
BandMasterX 38  
BMS 42  
BSMI 4  
buffer  
data 8  
space 11  
busy status 57  
bytes per surface 10  
bytes per track 10  
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DEK 38  
reject, code 04 47  
description 7  
DFE 62  
G
dimensions 35  
disk rotation speed 10  
drive 34  
drive characteristics 10  
Drive Locking 38  
drive mounting 35, 46  
drive select 60  
dual port support 47  
Global Data Band 39  
Good status 57  
gradient 31  
ground shift noise 61  
grounding 46  
H
HDA 45, 46  
head and disk assembly (HDA) 7  
heads  
read/write data 10  
heat removal 45  
E
electrical  
description of connector 60  
signal characteristics 61  
specifications 19  
heat source 45  
electromagnetic compatibility 3  
Electromagnetic Compatibility (EMC) 4  
Electromagnetic Compatibility control Regulation 4  
Electromagnetic compliance for the European Union  
host equipment 46  
hot plugging the drive 14  
Humidity 31  
humidity limits 31  
electromagnetic susceptibility 34  
EMI requirements 3  
encryption engine 38  
encryption key 39  
I
Identifying a PI drive 43  
Idle Read After Write 42  
Idle1 19  
environment 45  
environmental  
Idle2 19  
limits 31  
Idle3 19  
requirements 13  
environmental control 34  
EraseMaster 38  
inquiry data 52  
installation 44  
guide 6  
error  
interface  
management 40  
rates 13  
commands supported 48  
error rate 13  
errors 14, 40  
European Union 4  
errors 13  
illustrated 57  
physical 57  
requirements 47  
interleave  
F
FCC rules and regulations 3  
features 8  
minimum 10  
intermediate/condition met/good status 57  
intermediate/good status 57  
internal data rate 10  
internal defects/errors 40  
internal drive characteristics 10  
IRAW 42  
interface 47  
Federal Information Processing Standard 37  
feed forward equalizer 62  
FFE 62  
FIPS 37  
firmware 8  
corruption 51  
J
firmware download port 38  
flawed sector reallocation 8  
Format command execution time 10  
function  
jumpers 44  
K
KCC 4  
complete, code 00 47  
not supported, code 05 47  
Korean Communications Commission 4  
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Korean KCC 4  
N
noise  
L
audible 3  
latency  
noise immunity 24  
average rotational 10  
Locking SP 38  
non-operating 31, 32, 34  
temperature 31  
LockOnReset 38  
non-operating vibration 34  
Nonrecoverable read errors 14  
logical block address 11  
logical block reallocation scheme 8  
logical block size 8, 10  
logical segments 11  
O
office environment 34  
operating 31, 32, 34  
option selection 60  
options 9  
M
maintenance 13, 14  
Manufacturers Secure ID 38  
maximum delayed motor start 21, 22, 23  
maximum start current 21, 22, 23  
media description 8  
out-of-plane distortion 46  
P
package size 33  
packaged 32  
parameter rounding 57  
password 38  
passwords 38  
Media Pre-Scan 42  
minimum sector interleave 10  
miscellaneous feature support  
Adaptive caching 57  
PCBA 46  
Asynchronous event notification 57  
Automatic contingent allegiance 57  
Deferred error handling 57  
Parameter rounding 57  
Queue tagging 57  
Reporting actual retry count 57  
Segmented caching 57  
SMP = 1 in Mode Select command 57  
Synchronized (locked) spindle operation 57  
Zero latency read 57  
peak bits per inch 10  
peak operating current 21, 22, 23  
peak-to-peak measurements 24  
performance characteristics  
detailed 10  
general 10  
performance degradation 32  
performance highlights 8  
physical damage 34  
physical interface 57  
physical specifications 19  
PI level - Type 0 43  
PI level - Type I 43  
PI level - Type II 43  
PI level - Type III 43  
PI Levels 43  
miscellaneous status support  
ACA active 57  
ACA active, faulted initiator 57  
Busy 57  
Check condition 57  
Condition met/good 57  
Good 57  
Intermediate/condition met/good 57  
Intermediate/good 57  
pin descriptions 60  
power 61  
dissipation 28  
Reservation conflict 57  
Task set full 57  
requirements, AC 20  
requirements, DC 20  
sequencing 24  
miscorrected media data 13  
Mode sense  
data, table 53, 54, 55, 56  
mounting 46  
holes 46  
orientations 44  
mounting configuration 35  
mounting configuration dimensions 35, 36  
MSID 38  
Power Condition mode page 19  
power distribution 3  
power management 19  
PowerChoice 19  
PowerChoice reports 20  
PowerCycle 38  
prefetch/multi-segmented cache control 11  
preventive maintenance 13  
protection information 43  
MTBF 13, 14  
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protection of data at rest 38  
segmented caching 57  
self-encrypting drives 38  
Self-Encrypting Drives Reference Manual 6  
Self-Monitoring Analysis and Reporting Technology  
Q
queue tagging 57  
Serial Attached SCSI (SAS) Interface Manual 2  
shielding 3  
R
radio interference regulations 3  
RAID Rebuild 8  
shipping container 31  
shock 32  
Random number generator 38  
RCD bit 11  
and vibration 32  
shock mount 46  
read error rates 13, 40  
read errors 14  
SID 38  
signal  
read/write data heads 10  
ReadLockEnabled 38  
receivers 61  
characteristics 61  
single-unit shipping pack kit 9  
SMART 9, 15  
recommended mounting 33  
Recoverable Errors 13  
recovered media data 13  
reference  
SMP = 1 in Mode Select command 57  
SNW-3 training gap 62  
standards 3  
Standby1 19  
documents 6  
Standby2 19  
relative humidity 31  
reliability 9  
START STOP UNIT command 19  
start/stop time 11  
specifications 13  
surface stiffness  
reliability and service 14  
repair and return information 18  
reporting actual retry count 57  
reservation conflict status 57  
resonance 32  
allowable for non-flat surface 46  
switches 44  
synchronized spindle  
operation 57  
system chassis 46  
return information 18  
RevertSP 39  
RNG 38  
T
Taiwanese BSMI 4  
task management functions 47  
Abort task set 47  
RoHS 5  
rotation speed 10  
Clear ACA 47  
Clear task set 47  
S
safety 3  
terminate task 47  
Sanitize 39  
SAS  
task management response codes 47  
Function complete 00 47  
Function not supported 05 47  
Function reject 04 47  
task set full status 57  
TCG 38  
interface 60  
physical interface 57  
task management functions 47  
SAS documents 6  
SAS Interface Manual 3, 6  
SAS Power Disable 60  
SAS-2 specification compliance 62  
SCSI interface  
temperature 31, 45  
limits 31  
non-operating 31  
regulation 3  
commands supported 48  
Secure ID 38  
Security Protocol In 38  
Security Protocol Out 38  
security providers 38  
seek error  
See also cooling  
terminate task function 47  
terminators 44  
tracks per inch 10  
tracks per surface 10  
transmitters 61  
defined 13  
rate 13  
transporting the drive 18  
Trusted Computing Group 38  
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Type 1 PI format 43  
Type 2 PI format 43  
U
unformatted 9  
Unrecoverable Errors 13  
unrecovered media data 13  
V
vibration 32, 34  
W
warranty 18  
WriteLockEnabled 38  
Z
zero latency read 57  
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Seagate Technology LLC  
AMERICAS Seagate Technology LLC 10200 South De Anza Boulevard, Cupertino, California 95014, United States, 408-658-1000  
ASIA/PACIFIC Seagate Singapore International Headquarters Pte. Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888  
EUROPE, MIDDLE EAST AND AFRICA Seagate Technology SAS 16-18 rue du Dôme, 92100 Boulogne-Billancourt, France, 33 1-4186 10 00  
Publication Number: 100726011, Rev. A  
May 2014  
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