Product Manual
NL35 Series FC
ST3500071FC
ST3400071FC
100343673
Rev. D
August 2007
Contents
Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applicable standards and reference documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electromagnetic compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Standard features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Media description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Formatted capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Programmable drive capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Factory-installed accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Factory-installed options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
User-installed accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Internal drive characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Seek performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Access time [4]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Generalized performance characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Prefetch/multi-segmented cache control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cache operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Caching write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Prefetch operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Error rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Recoverable Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Unrecoverable errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Interface errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Reliability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mean Time Between Failure (MTBF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Hot plugging the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Thermal monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Drive Self Test (DST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Physical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
AC power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
DC power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Conducted noise immunity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
NL35 Series FC Product Manual, Rev. D
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Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Drive internal defects/errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Drive ID/option selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Drive orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Drive mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Fibre Channel link service frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Fibre Channel fabric accept login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Fibre Channel Arbitrated Loop options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Miscellaneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Connector requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
FC-AL transmitters and receivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Active LED Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Motor start controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Device control codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.6
iv
NL35 Series FC Product Manual, Rev. D
TTL input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
LED driver signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Differential PECL output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Differential PECL input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
10.0
Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
NL35 Series FC Product Manual, Rev. D
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NL35 Series FC Product Manual, Rev. D
List of Figures
Figure 13.
NL35 Series family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DC current and power vs. input/output operations per second (1 Gbit). . . . . . . . . . . . . . . . . 27
DC current and power vs. input/output operations per second (2 Gbit). . . . . . . . . . . . . . . . . 27
Location of the HDA Temperature check point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Mounting configuration dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Air flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Port bypass circuit physical interconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
FC-AL SCA device connector dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Transmit eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Receive eye diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
NL35 Series FC Product Manual, Rev. D
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NL35 Series FC Product Manual, Rev. D
1.0
Scope
This manual describes Seagate Technology® LLC, NL35 Series (Fibre Channel) disc drives.
NL35 Series drives support the Fibre Channel Arbitrated Loop and SCSI Fibre Channel Protocol specifications
to the extent described in this manual. The Fibre Channel Interface Manual (part number 77767496) describes
the general Fibre Channel Arbitrated Loop characteristics of this and other Seagate Fibre Channel drives.
Figure 1.
NL35 Series family disc drive
NL35 Series FC Product Manual, Rev. D
1
2
NL35 Series FC Product Manual, Rev. D
2.0
Applicable standards and reference documentation
The drive has been developed as a system peripheral to the highest standards of design and construction. The
drive depends upon its host equipment to provide adequate power and environment in order to achieve opti-
mum 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 regu-
lation. In particular, the drive must be securely mounted in order to guarantee the specified performance char-
acteristics. Mounting by bottom holes must meet the requirements of Section 8.4.
2.1
Standards
The NL35 Series family complies with Seagate standards as noted in the appropriate sections of this manual
and the Seagate Fibre Channel Interface Manual, part number 77767496.
The NL35 Series disc drive is a UL recognized component per UL1950, CSA certified to CAN/CSA C22.2 No.
950-95, and VDE or TUV certified to EN60950.
2.1.1
Electromagnetic compatibility
The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to
use. As such 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 Communica-
tions.
The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides
reasonable shielding. As such, the drive is capable of meeting the Class B limits of the FCC Rules and Regula-
tions 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 con-
troller.
2.1.2
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 Section Table 11, DC power requirements.
NL35 Series FC Product Manual, Rev. D
3
2.2
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 sys-
tem represents the most popular characteristics for test platforms. The system configurations include:
• Typical current use microprocessor
• 3.5-inch floppy disc drive
• Keyboard
• Monitor/display
• Printer
• External modem
• 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 89/336/EEC of 03 May 1989 as amended by Directive 92/31/EEC of 28 April 1992 and
Directive 93/68/EEC of 22 July 1993.
Australian C-Tick
If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995
and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Man-
agement Agency (SMA).
Korean MIC
If this model has the Korean Ministry of Information and Communication (MIC) logo, it complies with paragraph
1 of Article 11 of the Electromagnetic Compatibility (EMC) Control Regulation and meets the Electromagnetic
Compatibility Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information and
Communication Republic of Korea.
Taiwanese BSMI
If this model has the Chinese National Standard (CNS) 13438 marking, it complies with Chinese National Stan-
dard (CNS) 13438 and meets the Electromagnetic Compatibility (EMC) Framework requirements of the Tai-
wanese Bureau of Standards, Metrology, and Inspection (BSMI).
2.3
Environmental protection
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances.
European Union Restriction of Hazardous Substances (RoHS)
A new law, the European Union Restriction of Hazardous Substances (RoHS) directive, will restrict the pres-
ence of chemical substances, including Lead (Pb), in electronic products effective July 2006. The directive’s
requirements have not been finalized. This drive is manufactured with components and materials that are
expected to comply with the RoHS directive when the directive takes effect.
4
NL35 Series FC Product Manual, Rev. D
2.4
Reference documents
NL35 Series FC Installation Guide
Fibre Channel Interface Manual
ANSI Fibre Channel Documents
Seagate part number: 100343674
Seagate part number: 77767496
X3.230-1994
X3.297.1997
X3.303.1998
X3.272-1996
X3.269-1996
NCITS TR-19
NCITS TR-20
SFF-8045
FC Physical and Signaling Interface (FC-PH)
FC-PH-2 Fibre Channel Physical and Signaling Interface-2
FC-PH-3 Fibre Channel Physical and Signaling Interface-3
FC Arbitrated Loop (FC-AL)
Fibre Channel Protocol for SCSI (FCP)
Private Loop SCSI Direct Attach (PLDA)
Fabric Loop Attachment (FC-FLA)
Specification for 40-pin SCA-2 Connector with Parallel Selection
Specification for 40-pin SCA-2 Connector with
Bidirectional Enclosure Services Interface
SFF-8067
ANSI Small Computer System Interface (SCSI) Documents
X3.131-1994
(SCSI-2)
X3.270-1996
NCITS 305-199X
(SCSI-3) Architecture Model
(SCSI-3) Enclosure Services
Specification for Acoustic Test
Requirement and Procedures
Seagate part number: 30553-001
Package Test Specification
Package Test Specification
Seagate P/N 30190-001 (under 100 lb.)
Seagate P/N 30191-001 (over 100 lb.)
In case of conflict between this document and any referenced document, this document takes precedence.
NL35 Series FC Product Manual, Rev. D
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NL35 Series FC Product Manual, Rev. D
3.0
General description
NL35 Series drives combine Tunneling Magnetoresistive (TMR) heads and a Fibre Channel interface to pro-
vide high performance, high capacity data storage for a variety of systems including engineering workstations,
network servers, mainframes, and supercomputers.
NL35 Series drives support the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channel Protocol as
described in the ANSI specifications, this document, and the Fibre Channel Interface Manual (part number
77767496) which describes the general interface characteristics of this drive. NL35 Series drives are classified
as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI standard.
Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actu-
ator, etc.) as this requires special facilities. The drive contains no parts replaceable by the user and opening
the HDA for any reason voids your warranty.
NL35 Series drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibil-
ity of destroying or degrading data by landing in the data zone. The drive automatically goes to the landing
zone when power is removed.
An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur-
ing shipping and handling. The shipping lock automatically disengages when power is applied to the drive and
the head load process begins.
A high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design provides
excellent performance with minimal power dissipation.
NL35 Series FC Product Manual, Rev. D
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3.1
Standard features
NL35 Series drives have the following standard features:
• Integrated dual port FC-AL controller
• Concurrent dual port transfers
• Support for FC arbitrated loop, private and public attachment
• Differential copper FC drivers and receivers
• Downloadable firmware using the FC-AL interface
• Supports SCSI enclosure services via interface connector
• 64-deep task set (queue)
• Supports up to 32 initiators
• Drive selection ID and configuration options are set on the FC-AL backpanel or through interface commands.
Jumpers are not used on the drive.
• Fibre Channel worldwide name uniquely identifies the drive and each port
• User-selectable logical block size (512, 520, 524 or 528 bytes per logical block)
• Selectable frame sizes from 256 to 2,112 bytes
• Industry standard 3.5-inch low profile form factor dimensions
• Programmable logical block reallocation scheme
• Flawed logical block reallocation at format time
• Programmable auto write and read reallocation
• Reed-Solomon error correction code
• Sealed head and disc assembly (HDA)
• No preventive maintenance or adjustments required
• Dedicated head landing zone
• Automatic shipping lock
• Embedded Grey Code track address and servo wedge address to eliminate seek errors
• Self-diagnostics performed at power on
• 1:1 interleave
• Zone bit recording (ZBR)
• Vertical, horizontal, or top down mounting
• Dynamic spindle brake
• Drive Self Test (DST)
• BackGround Media Scan (BGMS)
• Data Integrity Check
• Power Save
• Embedded servo design
• Reallocation of defects on command (Post Format)
• Fibre Channel interface transports SCSI protocol
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NL35 Series FC Product Manual, Rev. D
3.2
Media description
The media used on the drive has an 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
• 200 Mbytes/sec maximum instantaneous data transfers per port
• 7K RPM spindle; average latency = 4.17 msec
• Command queuing of up to 64 commands
• Background processing of queue
• Supports start and stop commands
3.4
Reliability
• 1,000,000 hours MTBF (Mean Time Between Failures)
• LSI circuitry
• Balanced low mass rotary voice coil actuator
• Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
• Dithering
3.5
Formatted capacities
Standard OEM models are formatted to 512 bytes per block. The sector size is selectable at format time. Users
having the necessary equipment may modify the data block size before issuing a format command and obtain
different formatted capacities than those listed.
For 2 gigabit operation, sector sizes must be divisible by 8.
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 sector 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 product are:
ST3500071FC
Decimal
ST3400071FC
Decimal
Sector
Size
Hex
Capacity (bytes)
500,000,000,000
500,000,001,800
493,338,811,244
495,351,471,120
Hex
Capacity (bytes)
400,000,000,000
400,000,004,040
394,160,052,684
395,805,899,280
512
976562500
961538465
941486281
938165665
3A352944
394FE9A1
381DF0C9
37EB45A1
781250000
769230777
752213841
749632385
2E90EDD0
2DD987B9
2CD5DF51
2CAE7B81
520
524
528
2. Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess
capacity above the guaranteed level will vary between 7K, 10K and 15K families and from generation to
generation, depending on how each sector size actually formats out for zone frequencies and splits over
servo bursts. This added capacity potential may range from 0.1 to 1.3 percent above the guaranteed
capacities listed above. Using the drives in this manner gives the absolute maximum capacity potential, but
the user must determine if the extra capacity potential is useful, or whether their assurance of backward
and forward compatibility takes precedence.
NL35 Series FC Product Manual, Rev. D
9
3.5.1
Programmable drive capacity
Using the Mode Select command, the drive can change its capacity to something less than maximum. See the
Mode Select Parameter List table in the FC Interface Product Manual. Refer to the Parameter list block
descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not
change the capacity it is currently formatted to have. A number in the number of blocks field that is less than
the maximum number of LBAs changes the total drive capacity to the value in the block descriptor number of
blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.
3.6
Factory-installed accessories
OEM standard drives are shipped with the NL35 Series FC Installation Guide (part number 100343674).
3.7
Factory-installed options
You 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 planning single unit distribution should specify this option.
• The NL35 Series FC Installation Guide, part number 100343674, is usually included with each standard
OEM drive shipped, but extra copies may be ordered.
• The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each
standard OEM drive shipped, but extra copies may be ordered.
3.8
User-installed accessories
The following accessories are available. All kits may be installed in the field.
• 4 Gbit Fibre Channel Kit, part number 100364396
This kit contains an interposer board which allows the FC connector on the drive to be split into its compo-
nent parts with one PS (5V, 12V) 4-pin Molex connector and 2 SFP (20-pin, 3.3V) data connectors. This
alows a standard PC power supply and 2 HBA data channels to be connected directly to the drive.
• Single-unit shipping pack.
10
NL35 Series FC Product Manual, Rev. D
4.0
Performance characteristics
This section provides detailed information concerning performance-related characteristics and features of
NL35 Series drives.
4.1
Internal drive characteristics
ST3500071FC
ST3400071FC
Drive capacity*
Read/write data heads
Bytes per track
500.0 ........................ 400.0........................ ..................Gbytes (formatted, rounded off value)
8 ............................... 8
686 ........................... 552........................... ..................Kbytes (average, rounded off values)
84.1 .......................... 67.7.......................... ..................Mbytes (unformatted, rounded off value)
Bytes per surface
Tracks per surface (total) 122,712 .................... 122,712.................... ..................Tracks (user accessible)
Tracks per inch
120,000 .................... 120,000.................... ..................TPI
Peak bits per inch
Internal data rate
Disc rotation speed
Avg rotational latency
747 ........................... 597........................... ..................KBPI
411-794 .................... 322-669.................... ..................Mbits/sec (variable with zone)
7,200 ........................ 7,200........................ ..................rpm (+ 0.5%)
4.17 .......................... 4.17.......................... ..................msec
* One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on op-
erating environment and formatting.
4.2
Seek performance characteristics
Access time [4]
4.2.1
Not including controller overhead
(without disconnect) [1]
Drive level
Read
Write
msec
Average—Typical [2]
Single Track—Typical [2]
Full Stroke—Typical [2]
8.5
0.8
16
9.5
1.0
16.5
4.2.2
Format command execution time (in minutes)
ST3500071FC
375
ST3400071FC
360
Maximum (with verify)
Maximum (without verify)
170
155
NL35 Series FC Product Manual, Rev. D
11
4.2.3
Generalized performance characteristics
1 to 1
Minimum sector interleave
Data buffer transfer rate to/from disc media (one 512-byte sector):
ST3500071FC ST3400071FC
Minimum [3]*
Maximum [3]
33
66
35
66
MBytes/sec
MBytes/sec
Sustainable disc transfer rate:
ST3500071FC ST3400071FC
Minimum [3]*
Maximum [3]
32
67
27
56
MBytes/sec
MBytes/sec
Fibre Channel Interface maximum instantaneous transfer rate
1 GHz
2 GHz
106 Mbytes/sec* per port 212 Mbytes/sec* per
(dual port = 212 Mbytes/ port (dual port = 424
sec*)
Mbytes/sec*)
Note. 1 Megabyte (MB) = 1,000,000 bytes.
Sector Sizes
Default is 512-byte data blocks.
Logical block sizes
Default is 512-byte data blocks
512, 520, 524, and 528 supported.
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
1.56 msec
Overhead time for head switch in sequential mode
Overhead time for one track cylinder switch in sequential mode
Average rotational latency
0.66 msec (typical)
4.17 msec
*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or
from the host.
Notes for Section 4.2.
[1] 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).
[2] Typical access times are measured under nominal conditions of temperature, voltage, and horizontal ori-
entation as measured on a representative sample of drives.
[3] Assumes system ability to support the rates listed and no cable loss.
[4] Access to data = access time + latency time.
12
NL35 Series FC Product Manual, Rev. D
4.3
Start/stop time
If the Motor Start option is disabled, the drive becomes ready within 25 seconds after DC power is applied. If a
recoverable error condition is detected during the start sequence, the drive executes a recovery procedure and
the time to become ready may exceed 25 seconds. Stop time is less than 30 seconds (maximum) from
removal of DC power.
If the Motor Start option is enabled, the internal controller accepts the commands listed in the Fibre Channel
Interface Manual less than 3 seconds after DC power has been applied. After the Motor Start command has
been received, the drive becomes ready for normal operations within 25 seconds (excluding the error recovery
procedure). The Motor Start command can also be used to command the drive to stop the spindle.
There is no power control switch on the drive.
4.4
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 opera-
tion, the prefetch feature overlaps cache operation somewhat as described in sections 4.5.1 and 4.5.2.
All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this
drive family are given in Table 25.
4.5
Cache operation
Note. Refer to the Fibre Channel Interface Manual for more detail concerning the cache bits.
Of the 8,192 kbytes physical buffer space in the drive, 6,991 kbytes can be used as a cache. The buffer can be
divided into logical segments (using Mode Select Page 08h, byte 13) 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 Fibre Channel Interface Manual), data requested by the host with a read
command is retrieved from the buffer, if possible, before any disc access is initiated. If cache operation is not
enabled, the buffer (still segmented with the required number of segments) is still used, but only as circular
buffer segments during disc 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. On a
cache miss, all data transfers to the host are in accordance with buffer-full ratio rules. On a cache hit, the drive
ignores the buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (dis-
connect/reconnect control) in the Fibre Channel Interface Manual.
The following is a simplified description of the prefetch/cache operation:
Case A—read command is received and the first logical block is already in the cache:
1. Drive transfers to the initiator the first logical block requested plus all subsequent contiguous logical blocks
that are already in the cache. This data may be in multiple segments.
2. When a requested logical block is reached that is not in any cache segment, the drive fetches it and any
remaining requested logical block addresses from the disc and puts them in a segment of the cache. The
drive transfers the remaining requested logical blocks from the cache to the host in accordance with the
Mode Select Disconnect/Reconnect parameters, page 02h.
NL35 Series FC Product Manual, Rev. D
13
Case B—A Read command requests data, and the first logical block is not in any segment of the cache:
1. The drive fetches the requested logical blocks from the disc and transfers them into a segment, and then
from there to the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.
During a prefetch, the drive crosses a cylinder boundary to fetch data only if the Discontinuity (DISC) bit is set
to 1 in bit 4 of byte 2 of the Mode Select parameters page 08h. Default is zero for bit 4.
Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical
blocks. The wrap-around capability of the individual segments greatly enhances the cache’s overall perfor-
mance, allowing a wide range of user-selectable configurations. The drive supports operation of any integer
number of segments from 1 to 32. Divide the 6,877 Kbytes in the buffer by the number of segments to get the
segment size in bytes; then divide by the sector size to get the number of sectors per segment, any partial sec-
tors remaining are not used. Default is 3 segments.
Note. 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.
4.5.1
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 avail-
able 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 gen-
erated.
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 25 shows the mode default settings for the drive.
4.5.2
Prefetch operation
If the Prefetch feature is enabled, data in contiguous logical blocks on the disc 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.
14
NL35 Series FC Product Manual, Rev. D
To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead—DRA bit). DRA bit = 0
enables prefetch.
Since data that is prefetched replaces data already in some buffer segments, the host can limit the amount of
prefetch data to optimize system performance. The Max Prefetch field (bytes 8 and 9) limits the amount of
prefetch. The drive does not use the Prefetch Ceiling field (bytes 10 and 11).
During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if Mode parameters
page 08h, byte 2, bit 4 is set to 1 (Discontinuity—DISC bit).
When prefetch (read look-ahead) is enabled (enabled by DRA = 0), it operates under the control of ARLA
(Adaptive Read Look-Ahead). If the host uses software interleave, ARLA enables prefetch of contiguous
blocks from the disc when it senses that a prefetch hit will likely occur, even if two consecutive read operations
were not for physically contiguous blocks of data (e.g. “software interleave”). ARLA disables prefetch when it
decides that a prefetch hit will not likely occur. If the host is not using software interleave, and if two sequential
read operations are not for contiguous blocks of data, ARLA disables prefetch, but as long as sequential read
operations request contiguous blocks of data, ARLA keeps prefetch enabled.
4.5.3
Optimizing cache performance for desktop and server applications
Desktop and server applications require different drive caching operations for optimal performance. This
means it is difficult to provide a single configuration that meets both of these needs. In a desktop environment,
you want to configure the cache to respond quickly to repetitive accesses of multiple small segments of data
without taking the time to “look ahead” to the next contiguous segments of data. In a server environment, you
want to configure the cache to provide large volumes of sequential data in a non-repetitive manner. In this
case, the ability of the cache to “look ahead” to the next contiguous segments of sequential data is a good
thing.
The Performance Mode (PM) bit controls the way the drive switches the cache buffer into different modes of
segmentation. In “server mode” (PM bit = 0), the drive can dynamically change the number of cache buffer
segments as needed to optimize the performance, based on the command stream from the host. In “desktop
mode” (PM bit = 1), the number of segments is maintained at the value defined in Mode Page 8, Byte 13, at all
times. For additional information about the PM bit, refer to the Unit Attention Parameters page (00h) of the
Mode Sense command (1Ah) in the Fibre Channel Interface Product Manual, part number 77767496.
NL35 Series FC Product Manual, Rev. D
15
16
NL35 Series FC Product Manual, Rev. D
5.0
Reliability specifications
The following reliability specifications assume correct host and drive operational interface, including all inter-
face timings, power supply voltages, environmental requirements and drive mounting constraints
Seek error rate
Less than 1 error in 107 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 1014 bits transferred
Less than 1 sector in 1021 bits transferred
Interface error rate
Less than 1 error in 1011 bits transferred with minimum receive eye
Less than 1 error in 1014 bits transferred with typical receive eye
MTBF
1,000,000 hours
5 years.
Service life
Warranty
To determine the warranty for a specific drive, use a web browser to
access the following web page:
From this page, click on the “Verify Your Warranty” link. You will be
asked to provide the drive serial number, model number (or part num-
ber) and country of purchase. The system will display the warranty infor-
mation for your drive.
Preventive maintenance
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 6.2, "DC
• 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.
NL35 Series FC Product Manual, Rev. D
17
5.1.1
Recoverable Errors
Recovereable 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 recov-
ered 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
14
Unrecoverable Data Errors (Sense Key = 03h) are specified at less than 1 sector in error per 10 bits trans-
ferred. Unrecoverable Data Errors resulting from the same cause are treated are 1 error for that block.
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 be reported with a Hardware error (04h) in the Sense
8
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. The total error rate for a loop of devices is the sum of the individual device error
rates.
5.2
Reliability and service
You can enhance the reliability of NL35 Series disc drives by ensuring that the drive receives adequate cooling.
Section 6.0 provides temperature measurements and other information that may be used to enhance the ser-
18
NL35 Series FC Product Manual, Rev. D
5.2.1
Mean Time Between Failure (MTBF)
The production disc drive shall achieve an MTBF of 1,000,000 hours when operated in an environment that
ensures the HDA case temperatures specified in Section 6.4 are not exceeded. Short-term excursions up to
the specification limits of the operating environment will not affect MTBF performance. Continual or sustained
operation at case temperatures above the values shown in Section 6.4.1 may degrade product reliability.
Estimated power-on operation hours means power-up hours per disc drive times the total number of disc
drives in service. Each disc drive shall have accumulated at least nine months of operation. Data shall be cal-
culated on a rolling average base for a minimum period of six months.
MTBF is based on the following assumptions:
• 8,760 power-on hours per year.
• 250 average on/off cycles per year.
• Operations at nominal voltages.
• Systems will provide adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not
exceeded.
Drive failure means any stoppage or substandard performance caused by drive malfunction.
A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered
an MTBF hit.
5.2.2
Preventive maintenance
No routine scheduled preventive maintenance is required.
5.2.3
Hot plugging the drive
Inserting and removing the drive on the FC-AL will interrupt loop operation. The interruption occurs when the
receiver of the next device in the loop must synchronize to a different input signal. FC error detection mecha-
nisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recovery is initiated
based on the type of error.
The disc drive defaults to the FC-AL Monitoring state, Pass-through state, when it is powered-on by switching
the power or hot plugged. The control line to an optional port bypass circuit (external to the drive), defaults to
the Enable Bypass state. If the bypass circuit is present, the next device in the loop will continue to receive the
output of the previous device to the newly inserted device. If the bypass circuit is not present, loop operation is
temporarily disrupted until the next device starts receiving the output from the newly inserted device and
regains synchronization to the new input.
The Pass-through state is disabled while the drive performs self test of the FC interface. The control line for an
external port bypass circuit remains in the Enable Bypass state while self test is running. If the bypass circuit is
present, loop operation may continue. If the bypass circuit is not present, loop operation will be halted while the
self test of the FC interface runs.
When the self test completes successfully, the control line to the bypass circuit is disabled and the drive enters
the FC-AL Initializing state. The receiver on the next device in the loop must synchronize to output of the newly
inserted drive.
If the self-test fails, the control line to the bypass circuit remains in the Enable Bypass state.
Note. It is the responsibility of the systems integrator to assure that no temperature, energy, voltage haz-
ard, 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.
Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is
required to insure data integrity.
NL35 Series FC Product Manual, Rev. D
19
5.2.4
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 you to back up the data before an actual failure occurs.
Note. The drive’s firmware monitors specific attributes for degradation over time but can’t predict instanta-
neous drive failures.
Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating per-
formance 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 DEX-
CPT 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.
You 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 two hours.
You can interrogate the drive through the host to determine the time remaining before the next scheduled mea-
surement and data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E.
This allows you 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 disc so that the events that caused a predictive failure can be recre-
ated. The drive measures and saves parameters once every two hours subject to an idle period on the FC-AL
bus. The process of measuring off-line attribute data and saving data to the disc is uninterruptable. The maxi-
mum on-line only processing delay is summarized below:
Maximum processing delay
On-line only delay
Fully-enabled delay
DEXCPT = 0, PERF = 1
DEXCPT = 0, PERF = 0
S.M.A.R.T. delay times
370 milliseconds
60 milliseconds
Reporting control
Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to
the reporting method, the firmware will issue to the host an 01-5Dxx sense code. 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.
20
NL35 Series FC Product Manual, Rev. D
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 inter-
val 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 firm-
ware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accom-
plish 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 pre-
dictive 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.
5.2.5
Thermal monitor
NL35 Series 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 exceed the threatening temperature value.
A temperature sensor monitors the drive temperature and issues a warning over the interface when the tem-
perature 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 speci-
fied limit in compliance with the SCSI standard. The drive temperature is reported in the FRU code field of
mode sense data. You 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 68°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 68°C, however, you can set it to any value in the
range of 0 to 68°C. If you specify a temperature greater than 68°C in this field, the temperature is rounded
down to 68°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
When the first temperature trip point is exceeded, S.M.A.R.T. data is collected and a frame is saved to the disc.
NL35 Series FC Product Manual, Rev. D
21
5.2.6
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 text
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.
5.2.6.1
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.
5.2.6.2
Implementation
This section provides all of the information necessary to implement the DST function on this drive.
5.2.6.2.1
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 disc
In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.
22
NL35 Series FC Product Manual, Rev. D
5.2.6.2.2
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. Refer to the Fibre Channel Interface Product
Manual, part number 77767496, for additional information about invoking DST.
5.2.6.2.3
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.
5.2.6.2.4
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 param-
eter 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 zero, the drive passed with no errors detected by the DST. If the field is not 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.
NL35 Series FC Product Manual, Rev. D
23
5.2.6.2.5
Abort
There are several ways to abort a diagnostic. You can use a SCSI Bus Reset or a Bus Device Reset message
to abort the diagnostic.
You 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).
5.2.7
Product warranty
Beginning on the date of shipment to the customer and continuing for a period of three years, Seagate war-
rants that each product (including components and subassemblies) that fails to function properly under normal
use due to defect in materials or workmanship or due to nonconformance to the applicable specifications will
be repaired or replaced, at Seagate’s option and at no charge to the customer, if returned by customer at cus-
tomer’s expense to Seagate’s designated facility in accordance with Seagate’s warranty procedure. Seagate
will pay for transporting the repair or replacement item to the customer. For more detailed warranty information,
refer to the standard terms and conditions of purchase for Seagate products. Refer to Section 10 for contact
information.
Shipping
When transporting or shipping a drive, use only a Seagate-approved container. Keep your 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 tran-
sit. Contact your authorized Seagate distributor to purchase additional boxes. Seagate recommends shipping
by an air-ride carrier experienced in handling computer equipment.
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.
24
NL35 Series FC Product Manual, Rev. D
6.0
Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the drive.
6.1
AC power requirements
None.
6.2
DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive
connector.
Table 11:
ST3500071FC/ST3400071FC DC power requirements
1 Gbit
2 Gbit
(Amps)
+5V
Notes
(Amps)
+5V
(Amps)
+12V [2]
±5% [2]
0.48
(Amps)
+12V [2]
±5% [2]
0.48
Voltage
Regulation
[5]
±5%
±5%
Avg idle current DC
Maximum starting current
(peak DC) DC
(peak AC) AC
X
[1] [7]
0.94
1.00
3σ [3]
1.04
1.50
0.57
2.08
3.54
0.03
1.10
1.56
0.59
2.10
3.50
0.03
3σ [3]
Delayed motor start (max) DC 3σ [1] [4]
Peak operating current:
Typical DC
X
[1] [6]
0.99
1.01
1.68
0.75
0.77
1.90
1.05
1.07
1.76
0.74
0.76
1.90
Maximum DC
3σ [1]
Maximum (peak) DC
3σ
[1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these val-
ues. Power supply at nominal voltage. 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
7,200 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.
[4] This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start
Motor command.
NL35 Series FC Product Manual, Rev. D
25
[5] See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and
transient response.
[6] Operating condition is defined as random 8 block reads at 161 I/Os per second.
Current and power specified at nominal voltages. Decreasing +5 volt supply by 5% increases 5 volt cur-
rent by <0.5%. Decreasing +12 volt supply by 5% increases 12 volt current by 1.4%.
[7] During idle, the drive heads are relocated every 60 seconds to a random location within the band from
track zero to one-fourth of maximum track.
General DC power requirement notes.
1. Minimum current loading for each supply voltage is not less than 1.2% 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.
6.2.1
Conducted noise immunity
Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 20 MHz.
Maximum allowed noise values given below are peak to peak measurements and apply at the drive power con-
nector.
+5 V = 250 mV pp from 10 Hz to 10 MHz.
250 mV pp from 10 MHz to 20 MHz.
+12 V = 400 mV pp from 10 Hz to 100 Hz.
800 mV pp from 100 Hz to 8 KHz.
450 mV pp from 8 KHz to 20 KHz.
400 mV pp from 20 KHz to 10 MHz.
250 mV pp from 10 KHz to 20 MHz.
6.2.2
Power sequencing
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up
and down.
26
NL35 Series FC Product Manual, Rev. D
6.3
Power dissipation
Typical power dissipation under idle conditions is 10.49 watts (35.79 BTUs per hour) during 1 Gbit operation.
Typical power dissipation under idle conditions is 10.75 watts (36.68 BTUs per hour) during 2 Gbit operation.
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
2). Locate the typical I/O rate for a drive in your 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.
ST3500001FC DC CURRENT/POWER vs THROUGHPUT (1Gb) Random 8 Block Reads
1. 8 0 0
1. 6 0 0
1. 4 0 0
1. 2 0 0
1. 0 0 0
0.800
0.600
0.400
0.200
0.000
18 . 0 0
16 . 0 0
14 . 0 0
12 . 0 0
10 . 0 0
8.00
6.00
4.00
2.00
0.00
5Volt A
12 V o lt A
Watts
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
I/Os per Second
Figure 2.
DC current and power vs. input/output operations per second (1 Gbit)
ST3500001FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Reads
1. 8 0 0
18 . 0 0
16 . 0 0
14 . 0 0
12 . 0 0
10 . 0 0
8.00
6.00
4.00
2.00
0.00
5Volt A
12 V o lt A
Watts
1. 6 0 0
1. 4 0 0
1. 2 0 0
1. 0 0 0
0.800
0.600
0.400
0.200
0.000
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
I/Os per Second
Figure 3.
DC current and power vs. input/output operations per second (2 Gbit)
NL35 Series FC Product Manual, Rev. D
27
6.4
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). Maximum wet bulb temperature is 82°F (28°C).
6.4.1
Temperature
a. Operating
The maximum allowable continuous or sustained HDA case temperature for the rated MTBF is 122°F
(50°C) The maximum allowable HDA case temperature is 60°C. Occasional excursions of HDA case tem-
peratures above 122°F (50°C) or below 41°F (5°C) may occur without impact to specified MTBF. Continual
or sustained operation at HDA case temperatures outside these limits may degrade MTBF.
Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F
(5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per
hour. Air flow may be needed in the drive enclosure to keep within this range (see Section 8.3). Operation at
HDA case temperatures outside this range may adversely affect the drives ability to meet specifications. To
confirm that the required cooling for the electronics and HDA case is provided, place the drive in its final
mechanical configuration, perform random write/read operations and measure the HDA case temperature
after it has stabilized.
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 Temperature
Check Point
0.5”
Figure 4.
6.4.2
Location of the HDA Temperature check point
Relative humidity
The values below assume that no condensation on the drive occurs.
a. Operating
5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour non-condensing.
b. Non-operating
5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour non-condensing.
6.4.3
Effective altitude (sea level)
a. Operating
–200 to +10,000 feet (–61 to +3,048 meters)
b. Non-operating
–200 to +40,000 feet (–61 to +12,210 meters)
28
NL35 Series FC Product Manual, Rev. D
6.4.4
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
6.4.4.1
Shock
a. Operating—normal
The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not
exceeding 15 Gs at a maximum duration of 11 msec (half sinewave). The drive, as installed for normal
operation, shall operate error free while subjected to intermittent shock not exceeding 25 Gs at a maximum
duration of 2 msec (half sinewave). Shock may be applied in the X, Y, or Z axis.
b. Operating—abnormal
Equipment, as installed for normal operation, does not incur physical damage while subjected to intermit-
tent shock not exceeding 40 Gs at a maximum duration of 11 msec (half sinewave). Shock occurring at
abnormal levels may promote degraded operational performance during the abnormal shock period. Speci-
fied 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 two times per second.
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 75 Gs at a maximum duration of 11 msec (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 225 Gs at a maximum duration of 2 msec (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 120 Gs at a maximum duration of 0.5 msec (half
sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y,
or Z axis.
d. Packaged
Disc 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).
Package size
Packaged/product weight
Any
Drop height
<600 cu in (<9,800 cu cm)
600-1800 cu in (9,800-19,700 cu cm)
>1800 cu in (>19,700 cu cm)
>600 cu in (>9,800 cu cm)
60 in (1524 mm)
48 in (1219 mm)
42 in (1067 mm)
36 in (914 mm)
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 inches (1,070 mm) against a concrete floor or
equivalent.
NL35 Series FC Product Manual, Rev. D
29
6.4.4.2
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 G (zero to peak)
22-350 Hz @ 0.50 G (zero to peak)
350-500 Hz @ 0.25 G (zero to peak)
Vibration may be applied in the X, Y, or Z axis.
Operating normal translational random flat profile
10 - 500 Hz
0.5 G RMS (grams root mean square)
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
0-22 Hz @ 0.25 G (X, Y, or Z axis, zero to peak)
22-350 Hz @ 0.50 G (X, Y, or Z axis, zero to peak)
350-500 Hz @ 0.25 G (X, Y, or Z axis, zero to peak)
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
10 - 500 Hz
1.2 G RMS (grams root mean square)
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 @ 0.25 G (zero to peak)
22-350 Hz @ 5.00 G (zero to peak)
350-500 Hz @ 1.0 G (zero to peak)
Vibration may be applied in the X, Y, or Z axis.
Non-operating translational random flat profile
10 - 500 Hz
1.2 G RMS (grams root mean square)
6.4.5
Air cleanliness
The drive is designed to operate in a typical office environment with minimal environmental control.
NL35 Series FC Product Manual, Rev. D
31
6.4.6
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 corro-
sive chemicals as electronic drive component reliability can be affected by the installation environment. The sil-
ver, 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 vulca-
nized 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.
6.4.7
Acoustics
The typical sound power during idle mode as measured to ISO 7779 specification are listed in the table below.
Table 2:
Typical idle mode sound power
ST3500071FC and ST3400071FC
3.1 bels
There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea-
sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the
masking noise on any drive.
6.4.8
Electromagnetic susceptibility
See Section 2.1.2.
32
NL35 Series FC Product Manual, Rev. D
6.5
Mechanical specifications
The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions
of the front panel are shown in figure below. Refer to Figure 6 for detailed mounting configuration dimensions.
Height:
Width:
Depth:
Weight:
1.010 +/- 0.14 in.
4.0 +/- .008 in.
25.654 +/- .356 mm
101.6 +/- .203 mm
146.558 mm +/- 0.203 mm
0.726 kilograms
5.770 in. +/- 0.008 in.
1.6 pounds
1.010 +/- .014
5.770 +/- .008
4.000 +/- .008
3.750 +/- .010
.125 +/- .010
1.750 +/- .010
1.122 +/- .010
4.000 +/- .010
.250 +/- .008
1.638 +/- .010
.180 +/- 0.021
25.654 +/- .356
146.558 +/- .203
101.6 +/- .203
95.25 +/- .254
3.175 +/- .254
44.45 +/- .254
28.4988 +/- .254
101.6 +/- .254
6.35 +/- .254
41.605 +/- .254
4.572 +/- 0.533
1.625 +/- 0.010 41.275 +/- .254
1.469 +/- 0.020 37.31 +/- 0.50
.276 +/- 0.040
7.0104 +/- 1.0160
Figure 6.
Mounting configuration dimensions
NL35 Series FC Product Manual, Rev. D
33
34
NL35 Series FC Product Manual, Rev. D
7.0
Defect and error management
The drive, as delivered, complies with this product manual. The read error rates and specified storage capaci-
ties are not dependent upon use of defect management routines by the host (initiator).
Defect and error management in the SCSI protocol involves the drive internal defect/error management and
FC-AL system error considerations (errors in communications between the initiator and the drive). Tools for
use in designing a defect/error management plan are briefly outlined in this section. References to other sec-
tions are provided when necessary.
7.1
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 Fibre Channel Interface Manual.
Also, more information on the drive Error Recovery philosophy is presented in the Fibre Channel Interface
Manual.
7.2
Drive error recovery procedures
When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery proce-
dures 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 sev-
eral SCSI commands described in the Fibre Channel 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 consists of 11 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.
NL35 Series FC Product Manual, Rev. D
35
Table 12 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 recov-
ery 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.
Table 12:
Read and write retry count maximum recovery times
Maximum recovery time per
LBA (cumulative, msec)
Read retry
count1
Maximum recovery time per
LBA (cumulative, msec)
Write retry
count1
0
108.3
0
1
2
3
4
5
50.0
1
125.0
75.0
2
424.8
116.6
3
474.8
141.6
4
541.5
249.9
5
599.8
308.2 (default)
6
666.4
7
841.3
8
958.0
9
1091.2
1166.2
2066.1 (default)
10
11
[1] These values are subject to change.
Setting these retry counts to a value below the default setting could result in an increased unrecovered
error rate which may exceed the value given in this product manual. A setting of zero (0) will result in the
drive not performing error recovery.
For example, suppose the Read/Write Recovery page has the RC bit set to 0, read retry count set to 4,
and the recovery time limit field (Mode Sense page 01, bytes 10 and 11) set to FF FF hex (maximum). A
four LBA Read command is allowed to take up to 541.5 msec recovery time for each of the four LBAs in
the command. If the recovery time limit is set to 00 C8 hex (200 msec decimal) a four LBA read command
is allowed to take up to 200 msec for all error recovery within that command. The use of the Recovery
Time Limit field allows finer granularity on control of the time spent in error recovery. The recovery time
limit only starts counting when the drive is executing error recovery and it restarts on each command.
Therefore, each command’s total recovery time is subject to the recovery time limit. Note: A recovery time
limit of 0 will use the drive’s default value of FF FF. Minimum recovery time limit is achieved by setting the
Recovery Time Limit field to 00 01.
36
NL35 Series FC Product Manual, Rev. D
7.3
FC-AL system errors
Information on the reporting of operational errors or faults across the interface is given in the Fibre Channel
Interface Manual. The FCP 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 Fibre Channel 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.
7.4
Background Media Scan
Background Media Scan (BGMS) is a self-initiated media scan. It performs sequential reads across the entire
pack of the media while the drive is idle. In RAID arrays, BGMS allows hot spare drives to be scanned for
defects prior to being put into service by the host system. On regualr duty drives, if the host system makes use
of the BGMS Log Page, it can avoid placing data in suspect locations on the media. Unrecovered error sites
found during BGMS will be logged and recovered error sites will be logged or reallocated per ARRE/AWRE
settings.
With BGMS, the host system can consume less power and system overhead by only checking BGMS status/
results rather than tying up the bus and consuming power in the process of host-initiated media scanning activ-
ity.
Since the background scan functions are only done during idle periods, BGMS causes a negligible impact to
system performance. Background media scan will begin after 500ms of idle time. Other features that normally
use idle time to function will function normally because BGMS functions for bursts of 800ms and then sus-
pends activity to allow other background functions to operate. Additionally, BGMS operates in segments of 400
block reads, checking for host commands upon completion of each of the block segments.
The BGMS function will complete any BGMS-initiated error recovery prior to returning to service host-initiated
commands. Overhead associated with a return to host-servicing activity from BGMS only impacts the first com-
mand that interrupted BGMS. This results in a typical delay of about 4 ms.
7.4.1
Media Pre-Scan
Media Pre-Scan is an optional feature that allows the drive to handle unrecovered media errors that would oth-
erwise have been found by the host system during critical data accesses early in the integration process at
customer sites. This should reduce integration DPPM (defective parts per million) by identifying and repairing
media errors that arose during shipping and handling. Media Pre-Scan replaces all host-initiated Write com-
mands with Write-Verify commands when the drive is accessing areas of the media yet untouched by BGMS-
initiated scanning activity.
The drive will attempt to run BGMS on the entire pack of the drive. This will result in increasingly large portion
so fthe drive having been accesed, provided there is adequate idle time to allow BGMS to run. During the Pre-
Scan period, all Write commands that are in un-BGMS-scanned areas are converted to Write-Verify com-
mands. To expedite the scan of the full pack and the subsequenty exit from the Pre-Scan period, BGMS will
begin immediately when the drive goes to idle during the Pre-Scan period, as opposed to waiting 500ms as is
done under non-Pre-Scan conditions.
NL35 Series FC Product Manual, Rev. D
37
38
NL35 Series FC Product Manual, Rev. D
8.0
Installation
NL35 Series disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators
on the drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connector (FC-SCA)—no
Use the FC-AL interface to select drive ID and all option configurations for devices on the loop.
If multiple devices are on the same FC-AL and physical addresses are used, set the device selection IDs (SEL
IDs) on the backpanel so that no two devices have the same selection ID. This is called the hard assigned arbi-
trated loop physical address (AL_PA). There are 125 AL_PAs available (see Table 32). If you set the AL_PA on
the backpanel to any value other than 0, the device plugged into the backpanel’s SCA connector inherits this
AL_PA. In the event you don’t successfully assign unique hard addresses (and therefore have duplicate selec-
tion IDs assigned to two or more devices), the FC-AL generates a message indicating this condition. If you set
the AL_PA on the backpanel to a value of 0, the system issues a unique soft-assigned physical address auto-
matically.
Loop initialization is the process used to verify or obtain an address. The loop initialization process is per-
formed when power is applied to the drive, when a device is added or removed from the Fibre Channel loop, or
when a device times out attempting to win arbitration.
• Set all option selections in the connector prior to applying power to the drive. If you change options after
applying power to the drive, recycle the drive power to activate the new settings.
• It is not necessary to low-level format this drive. Default configuration units are shipped from the factory low-
level formatted in 512-byte logical blocks. You need to reformat the drive only if you want to select a different
logical block size.
8.1
Drive ID/option selection
All drive options are made through the interface connector (J1). Table provides the pin descriptions for the 40-
pin Fibre Channel single connector (J1).
8.2
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 pre-
ferred mounting orientations.
NL35 Series FC Product Manual, Rev. D
39
8.3
Cooling
The host enclosure must provide heat removal from the drive. You should confirm that the host enclosure is
designed to ensure that the drive operates within the temperature measurement guidelines described in Sec-
tion 6.4.1. In some cases, forced airflow may be required to keep temperatures at or below the temperatures
If forced air is necessary, possible air-flow patterns are shown in Figure 7. The air-flow patterns are created by
fans either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow
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 7.
Air flow
40
NL35 Series FC Product Manual, Rev. D
8.4
Drive mounting
Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure
that you do not physically distort the drive 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.
Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate
Technology that the drive can meet the shock and vibration specifications given herein while
mounted in such an adapter frame. Adapter frames that are available may not have a mechanical
structure capable of mounting the drive so that it can meet the shock and vibration specifications
listed in this manual.
8.5
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 electri-
cally 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 mount-
ing the drive in the host equipment.
Increased radiated emissions may result if you 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.
NL35 Series FC Product Manual, Rev. D
41
42
NL35 Series FC Product Manual, Rev. D
9.0
Interface requirements
This section partially describes the interface requirements as implemented on NL35 Series drives. Additional
information is provided in the Fibre Channel Interface Manual (part number 77767496).
9.1
FC-AL features
This section lists the Fibre Channel-specific features supported by NL35 Series drives.
9.1.1
Fibre Channel link service frames
Table 13 lists the link services supported by NL35 Series drives.
Table 13:
Link services supported
Type of frame
Link service
Basic link service frames
Basic link service reply frames
Abort Sequence (ABTS)
Basic_Accept (BA_ACC)
Basic_Reject (BA_RJT)
Extended link service frames
N_Port Login (PLOGI)
Fabric Login (FLOGI)
Logout (LOGO)
Process Login (PRLI)
Process Logout (PRLO)
Read Link Status (RLS)
Fabric Address Notification (FAN)
Port Discovery (PDISC)
Address Discovery (ADISC)
Third-party Process Logout (TRPLO)
Extended link service reply frames
Fibre Channel Services
Accept (ACC)
Link Service Reject (LS_RJT)
Register FC-4 Types (RFT_ID)
NL35 Series FC Product Manual, Rev. D
43
9.1.2
Fibre Channel task management functions
Table 14 lists the Fibre Channel SCSI Fibre Channel Protocol (FC SCSI FCP) task management functions sup-
ported.
Table 14:
Task name
Fibre Channel SCSI FCP task management functions
Supported
Terminate task
Clear ACA
No
No
Target reset
Clear task set
Abort task set
Yes
Yes
Yes
9.1.3
Fibre Channel task management responses
Table 15 lists the FC SCSI FCP response codes returned for task management functions supported.
Table 15:
FC SCSI FCP response codes
Function name
Response code
Function complete
00
04
05
Function not supported
Function reject
44
NL35 Series FC Product Manual, Rev. D
9.1.4
Fibre Channel port login
Table 16 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.
Table 16:
Bytes
N_Port login (PLOGI) payload
0-15
03
00
00
00
XX
PN
XX
PN
BB
PN
BB
PN
CF
PN
XX
PN
FS
PN
FS
PN
XX
NN
XX
NN
XX
NN
XX
NN
Common
16-31
32-35
36-47
48-51
52-63
64-67
68-79
80-83
84-95
96-99
100-111
112-115
XX
NN
XX
NN
XX
NN
XX
NN
XX
XX
SO
XX
XX
XX
XX
SO
XX
XX
XX
XX
IC
XX
XX
IC
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
FS
XX
XX
XX
XX
FS
XX
XX
XX
XX
XX
XX
XX
XX
XX
CS
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
Class 1
Class 2
Class 3
Reserved
XX
XX
OS
XX
XX
XX
XX
OS
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
Vendor
Version
X
Indicates a four-bit (hex) field is not checked.
Indicates a single bit is not checked.
x
BB
CF
BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).
Common features. This binary field selects the common features requested by the initiator login.
MSB
Continuously increasing offset
Random relative offset
Valid version level
Must = 1
Not checked. Port Login Accept will return a 0—not supported.
x
N_Port/F_Port
Must = 0, N_Port
Must = 1
Alternate credit model
Other bits reserved
xxx XX
FS
PN
Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS < 2,112 and a
multiple of four bytes. For multiple frame sequences, all frames but the last frame of the sequence must be this size. Only the
receive buffer field size in the Class 3 parameters is used.
Port name (initiator’s)—saved with the login parameters. If a change of the port name/AL_PA address association is detected
during a Port DISCovery, and implicit logout occurs and the initiator returns a LS_RJT.
NN
SO
Node name. The node name is not checked or saved by the drive.
Service options Class 3 only.
MSB
Class valid
Must = 1
Intermix
x
Stacked connection req.
Sequential delivery
Other bits reserved
xx
x
xxx XX
IC
Initiator control
MSB XID reassign
xx
Proc Assc
Other bits
10 or 11 causes the login to be rejected. Other values are accepted.
XXX
CS
OS
Concurrent sequences
Must be a value greater than 0.
Must be a value greater than 0.
Open sequences per exchange
NL35 Series FC Product Manual, Rev. D
45
9.1.5
Fibre Channel port login accept
Table 17 identifies the N_Port Login access payload values.
Table 17:
Bytes
N_Port Login Accept (ACC) payload
0-15
02
00
37
00
00
UI
00
01
UI
00
F4
UI
20
20
20
00
00
00
20
88
37
00
UI
FS
UI
FS
UI
00
20
FF
00
00
00
01
20
Common
16-31
32-35
36-47
48-51
52-63
64-67
68-79
80-83
84-95
96-99
100-111
112-115
PP
00
00
80
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
FS
00
00
00
00
FS
00
00
00
00
00
00
00
00
00
FF
00
00
00
00
00
00
00
00
00
00
00
00
Class 1
Class 2
Class 3
Reserved
00
00
00
00
00
00
00
01
00
00
00
00
00
00
00
00
00
00
00
00
Vendor -
Version
FS
UI
Receive buffer field size. The drive returns and uses the receive buffer size from the N_Port Login Class 3 receive
buffer.
Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and
Node Name fields.
PP
Port identifier field.
01
02
P_LOGI received on Port A.
P_LOGI received on Port B.
9.1.6
Fibre Channel Process Login
Table 18 lists the process login payload data.
Table 18:
Process Login (PLRI) payload
Bytes
0-15
20
00
10
00
00
00
14
22
08
00
20
00
XX XX XX XX XX XX XX XX
16-19
XX
Indicates fields that are not used.
46
NL35 Series FC Product Manual, Rev. D
9.1.7
Fibre Channel Process Login Accept
Table 19 lists NL35 Series process login accept payload data.
Table 19:
Process Login Accept (ACC) payload
Bytes
0-15
02
00
10
00
00
00
14
12
08
00
21
00
00
00
00
00
00
00
00
00
16-31
9.1.8
Fibre Channel fabric login
Table 20 lists the fabric login payload from the drive.
Table 20:
Fabric Login (FLOGI) payload
Bytes
0-15
04
00
37
00
00
UI
00
02
UI
00
F4
UI
20
20
20
00
00
20
08
00
08
40
00
00
00
00
Common
16-31
32-35
36-47
48-51
52-63
64-67
68-79
80-83
84-95
PP 00
37
00
00
00
00
UI
00
00
00
00
UI
00
00
08
00
UI
00
00
40
00
02
00
00
00
00
00
00
00
00
00
00
00
00
00
00
20
00
00
00
00
00
00
80
00
00
00
00
00
00
00
00
00
00
00
00
00
Class 1
Class 2
Class 3
00
00
00
00
00
00
00
00
00
00
00
00
Reserve
d
96-99
00
00
00
00
00
00
00
100-111
00
00
00
00
00
00
00
00
00
00
00
00
Vendor -
Version
112-115 00
UI
Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and Node Name
fields.
PP
Port identifier field.
01
02
FLOGI originated on Port A.
FLOGI originated on Port B.
NL35 Series FC Product Manual, Rev. D
47
9.1.9
Fibre Channel fabric accept login
Table 20 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.
Table 21:
Fabric Login Accept (ACC) payload
Bytes
0-15
02
E_
00
00
00
V_
XX XX BB BB CF XX FS FS R_ A_
T0
V_
Common
16-31
32-35
36-47
48-51
52-63
64-67
68-79
80-83
84-95
D_ T0
PN PN PN PN PN PN PN PN NN NN NN NN
NN NN NN NN
XX XX XX XX
XX XX XX XX
OS OS XX XX
XX XX XX XX XX XX XX XX XX XX XX XX Class 1
XX XX XX XX XX XX XX XX XX XX XX XX Class 2
SO SO xx
xx
XX XX FS FS XX xx
XX XX Class 3
XX XX XX XX XX XX XX XX XX XX XX XX Reserve
d
96-99
XX XX XX XX
100-111
XX XX XX XX XX XX XX XX XX XX XX XX Vendor -
Version
112-115 XX XX XX XX
X
Indicates a four-bit (hex) field is not checked.
x
Indicates a single bit is not checked.
BB
CF
BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).
Common features. This binary field selects the common features requested by the fabric login.
MSB
Continuously increasing offset
Random relative offset
Valid version level
x
x
x
N_Port/F_Port
Must = 1, F_Port
Must = 1
Alternate credit model
Other bits reserved
xxx XX
FS
PN
Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS < 2,112 and a
multiple of four bytes. The receive buffer field size in the Class 3 parameters is used. The drive uses the lower FS of Fabric
Login Accept or N_Port Login when sending frames to an initiator.
Port Name. The fabric port name is saved with the login parameters. If a change of the port name is detected during a FAN, an
implicit logout occurs and a LS_RJT is returned to the fabric.
NN
SO
Node Name. The drive does not check or save the node name.
Service Options—Class 3 only.
MSB
Class valid
Must = 1
x
Intermix
Stacked connection req.
Sequential delivery
Other bits reserved
xx
Must = 1
xxx XX
48
NL35 Series FC Product Manual, Rev. D
9.1.10
Fibre Channel Arbitrated Loop options
Table 22 lists the FC-AL options supported by NL35 Series drives.
Table 22:
Option
FC-AL options supported
Supported
OPEN Half Duplex
OPEN Full Duplex
Accepted from another device.
Sent to open another device.
Accepted from another device.
Private Loop
Yes
Yes
No
Public Loop
Old Port State
Loop Position
Loop Position Report
Yes
Yes
9.2
Dual port support
NL35 Series drives have two independent FC-AL ports. These ports may be connected on independent loops
or on the same loop. Port A and Port B may be connected in any order or combination.
• If both ports are connected on independent loops and hard addressing is used, the drive interface address is
selected through the interface connector, both ports will seek the same loop address. If no conflict, both
ports will have the same loop address.
• If both ports are connected in the same loop and hard addressing is used, at least one port will attempt tak-
ing a soft address to prevent an address conflict.
Note. When a NL35 Series drive is connected in loops with previous Seagate FC drive products:
Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC)
Barracuda 9FC (ST19171FC)
Cheetah 4LP FC (ST34501FC)
Cheetah 9FC (ST19101FC)
the connection of Port A and B for these products must follow the requirements in their product manu-
als.
Subject to buffer availability, the NL35 Series drives support:
• Concurrent port transfers—The drive supports receiving transfers on both ports at the same time when the
ports are on independent loops.
• Full duplex—The drive supports sending FCP_Data, FCP_RSP, FCP_XFR_RDY and ELS transfers while
receiving frames on both ports.
NL35 Series FC Product Manual, Rev. D
49
9.3
SCSI commands supported
Table 23 lists the SCSI commands supported by NL35 Series drives.
Table 23: Supported commands
Command code
Supported [4] Command name
00h
Test unit ready
Y
01h
03h
Rezero unit
Y
Request sense
Y
Extended sense
Y
Field pointer bytes
Y
Actual retry count bytes
Y
04h
07h
08h
0Ah
0Bh
12h
Format unit [1]
Y
Reassign blocks
Y
Read
Y
Write
Y
Seek
Y
Inquiry
Y
Vital product data page (00h)
Y
Unit serial number page (80h)
Y
Implemented operating def. page (81h)
Y
IDevice identification page (83h)
Y
Firmware numbers page (C0h)
Y
Date code page (C1h)
Y
Jumper settings page (C2h)
Y
Device behavior page (C3h)
Y
15h
16h
Mode select (same pages as Mode Sense command shown below) [3]
Y
Y
N
N
Y
N
Reserve
3rd party reserved
Extent reservation
Release
17h
18h
Copy
50
NL35 Series FC Product Manual, Rev. D
Table 23:
Supported commands (continued)
Command code
Supported [4] Command name
1Ah
Mode sense
Y
Unit attention page (00h)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Error recovery page (01h)
Disconnect/reconnect control (page 02h)
Format page (03h)
Rigid disc drive geometry page (04h)
Verify error recovery page (07h)
Caching parameters page (08h)
Fibre Channel interface control page (19h)
Control mode page (0Ah)
Power control page (1Ah)
Information exceptions control page (1Ch)
Start unit/stop unit
1Bh
1Ch
Receive diagnostic results
Supported diagnostics pages
Translate page
Enclosure services page
Send diagnostics page
Supported diagnostics pages
Translate page
1Dh
25h
28h
Read capacity
Read extended
Disable page out
Force unit access
Relative address
2Ah
Write extended
Disable page out
Force unit access
NL35 Series FC Product Manual, Rev. D
51
Table 23:
Supported commands (continued)
Command code
Supported [4] Command name
Relative address
N
2Bh
2Eh
Seek extended
Y
Write and verify
Y
Disable page out
Y
Byte check
Y
Relative address
N
2Fh
Verify
Y
Disable page out
Y
Byte check
Y
Relative address
N
30h
31h
32h
33h
34h
35h
36h
37h
39h
3Ah
3Bh
Search data high
N
Search data equal
N
Search data low
N
Set limits
N
Prefetch
N
Synchronize cache
Y
Lock-unlock-cache
N
Read defect data
Y
Compare
N
Copy and verify
N
Write buffer
Y
Write combined header and data mode (0)
Y
Y
N
Y
N
Y
Y
Write data mode (2)
Download microcode mode (4)
Download microcode and save modes (5)
Download microcode with offsets mode (6)
Download microcode with offsets and save mode (7)
Firmware download option [2]
52
NL35 Series FC Product Manual, Rev. D
Table 23:
Supported commands (continued)
Command code
Supported [4] Command name
3Ch
Read buffer
Y
Read combined header and data mode (0)
Y
Y
Y
Y
Y
N
Y
N
N
N
Y
Y
Y
Y
Y
N
Y
Y
Y
N
Y
Y
Y
N
N
N
N
Read data mode (2)
Read descriptor mode (3)
Read long
3Eh
3Fh
40h
41h
Write long
Change definition
Write same
PBdata
LBdata
42-4Bh
4Ch
Not used
Log Select
4Dh
Log Sense
Supported Log page (00h)
Write Error Counter page (02h)
Read Error Counter page (03h)
Read Reverse Error Counter page (04h)
Verify Error Counter page (05h)
Non-medium Error Counter page (06h)
Temperature page (0Dh)
Application Client page (0Fh)
Self Test Results page (10h)
Cache Statistics Counter page (37h)
Factory Log page (3Eh)
Not used
4E-4Fh
50h
XD write
51h
XP write
52h
XD read
NL35 Series FC Product Manual, Rev. D
53
Table 23:
Supported commands (continued)
Command code
Supported [4] Command name
53-54h
Not used
N
55h
56h
Mode Select (10) [3]
Y
Reserved (10)
Y
3rd party reserve
Y
Extent reservation
N
57h
Released (10)
Y
58-59h
5Ah
Not used
N
Mode Sense (10) [3]
Y
5B-5Dh
5E
Not used
N
Persistent reserve in
A
5F
Persistent reserve out
A
60-7Fh
80h
Not used
N
XD write extended
N
81h
Rebuild
N
82h
Regenerate
N
83-8Fh
C0-DFh
EO-FFh
Not used
N
Not used
N
Not used
N
[1] NL35 Series drives can format to 512, 520, 524, and 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.
54
NL35 Series FC Product Manual, Rev. D
9.3.1
Inquiry data
Table 24 lists the Inquiry command data that the drive should return to the initiator per the format given in the
Fibre Channel Interface Manual.
Table 24:
NL35 Series inquiry data
Data (hex)
Bytes
0-15
00
[53
R#
00
00
00
00
30*
72
00
54
R#
00
00
00
43
30*
69
**
12
35
R#
00
00
00
70
20
68
8B
30
S#
00
00
00
79
53
74
00
30
S#
00
00
00
72
65
73
PP
30
S#
00
00
00
69
61
20
0A
37
S#
00
00
00
67
67
72
53
31
S#
00
00
00
68
61
65
45
46
S#
00
00
00
74
74
73
41
43]
S#
00
00
00
20
65
65
47
20
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
32*
20
20
Vendor ID
Product ID
16-31
32-47
48-63
64-79
80-95
96-111
112-127
128-143
33
R#
00
00
00
6F
36*
67
*Copyright
notice
*
Copyright year (changes with actual year).
**
02 = SCSI-2 implemented with some SCSI-3 features (default).
03 = The device complies to ANSI X3.301:199x
PP 50 = Inquiry data for an Inquiry command received on Port A.
70 = 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 25 reflect drive model.
9.3.2
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 change-
able.
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 val-
ues 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 val-
ues storage location on the media prior to shipping the drive. Some drives may have unique firmware with
unique default values also.
NL35 Series FC Product Manual, Rev. D
55
On standard OEM drives, the saved values are taken from the default values list and stored into the saved
values storage 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 values after a power on reset, hard reset, Target Reset, or LIP Reset.
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 25, 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.
Note. 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.
The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com-
mand pages for SCSI implementation (see the Fibre Channel Interface Manual).
Definitions:
DEF = Default value. Standard OEM drives are shipped configured this way.
CHG = Changeable bits; indicates if default value is changeable.
56
NL35 Series FC Product Manual, Rev. D
Table 25:
Mode Sense data default and changeable values for ST3500071FC drives
ST3500071FC
Bytes
Mode
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Sense
Header
00 ae 00 10 00 00 00 08 3a 35 29 44 00 00 02 00
<-----------------------------Mode Page 16 Byte Header Data and Parameter Data Bytes--------------------------->
81 0a c0 0b f f 00 00 00 05 00 f f f f
DEF
CHG
81 0a f f f f 00 00 00 00 f f 00 f f f f
DEF
82 0e 80 80 00 00 00 00 00 00 0c 9b 00 00 00 00
82 0e f f f f 00 00 00 00 00 00 f f f f 00 00 00 00
CHG
DEF
83 16 14 9e 00 00 00 2b 00 00 03 d7 02 00 00 01 00 e1 00 60 40 00 00 00
83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
CHG
DEF
84 16 01 df 54 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1c 22 00 00
84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
CHG
DEF
87 0a 00 0b f f 00 00 00 00 00 f f f f
87 0a 0f f f 00 00 00 00 00 00 f f f f
CHG
DEF
88 12 14 00 f f f f 00 00 f f f f f f f f 00 03 00 00 00 00 00 00
88 12 b5 00 00 00 f f f f f f f f 00 00 a0 f f 00 00 00 00 00 00
CHG
DEF
8a 0a 02 00 00 00 00 00 00 00 27 00
8a 0a 03 f1 00 00 00 00 00 00 00 00
CHG
DEF
99 06 00 00 00 00 00 00
99 06 00 f f 00 00 00 00
CHG
DEF
9a 0a 00 02 00 00 00 05 00 00 00 04
9a 0a 00 03 f f f f f f f f 00 00 00 00
CHG
DEF
9c 0a 10 00 00 00 00 00 00 00 00 01
9c 0a 9d 0f f f f f f f f f f f f f f f f f
CHG
DEF
80 06 00 00 0f 00 00 8c
80 06 b7 40 0f 00 00 f f
<--- Read capacity data --->
CHG
3a 35 29 43 00 00 02 00
NL35 Series FC Product Manual, Rev. D
57
Table 26:
Mode Sense data default and changeable values for ST3400071FC drives
ST3400071FC
Bytes
Mode
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Sense
Header
00 ae 00 10 00 00 00 08 2e 90 ed d0 00 00 02 00
<-----------------------------Mode Page 16 Byte Header Data and Parameter Data Bytes--------------------------->
81 0a c0 0b f f 00 00 00 05 00 f f f f
DEF
CHG
81 0a f f f f 00 00 00 00 f f 00 f f f f
DEF
82 0e 80 80 00 00 00 00 00 00 0c 9b 00 00 00 00
82 0e f f f f 00 00 00 00 00 00 f f f f 00 00 00 00
CHG
DEF
83 16 13 4b 00 00 00 34 00 00 03 54 02 00 00 01 00 e1 00 60 40 00 00 00
83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
CHG
DEF
84 16 01 bd 5d 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1c 22 00 00
84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
CHG
DEF
87 0a 00 0b f f 00 00 00 00 00 f f f f
87 0a 0f f f 00 00 00 00 00 00 f f f f
CHG
DEF
88 12 14 00 f f f f 00 00 f f f f f f f f 00 03 00 00 00 00 00 00
88 12 b5 00 00 00 f f f f f f f f 00 00 a0 f f 00 00 00 00 00 00
CHG
DEF
8a 0a 02 00 00 00 00 00 00 00 21 00
8a 0a 03 f1 00 00 00 00 00 00 00 00
CHG
DEF
99 06 00 00 00 00 00 00
99 06 00 f f 00 00 00 00
CHG
DEF
9a 0a 00 02 00 00 00 05 00 00 00 04
9a 0a 00 03 f f f f f f f f 00 00 00 00
CHG
DEF
9c 0a 10 00 00 00 00 00 00 00 00 01
9c 0a 9d 0f f f f f f f f f f f f f f f f f
CHG
DEF
80 06 00 00 0f 00 00 8c
80 06 b7 40 0f 00 00 f f
<--- Read capacity data --->
CHG
2e 90 ed cf 00 00 02 00
58
NL35 Series FC Product Manual, Rev. D
9.4
Miscellaneous operating features and conditions
Table 27 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 27:
Miscellaneous features
Supported
Feature or condition
FC-AL selective reset
Y
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 28:
Miscellaneous status
Supported
Status
Good
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Check condition
Condition met/good
Busy
Intermediate/good
Intermediate/condition met/good
Reservation conflict
Task set full
ACA active
ACA active, faulted initiator
NL35 Series FC Product Manual, Rev. D
59
9.5
FC-AL physical interface
Figure 8 shows the location of the J1 Fibre Channel single connection attachment (FC-SCA). Figure 10 pro-
vides the dimensions of the FC-SCA.
Details of the physical, electrical, and logical characteristics are provided within this section. The operational
aspects of Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual.
Fibre Channel
I/O Connector
Figure 8.
Physical interface
9.5.1
Physical characteristics
This section defines physical interface connector.
9.5.1.1 Physical description
FIbre Channel drives may be connected in a loop together or with other compatible FC-AL devices. A maxi-
mum of 127 devices may have addresses; however, one of the addresses is reserved for a fabric port switch
device. This means 126 addresses are available for FC-AL devices. More FC-AL compatible devices may
physically reside on the loop, but they will not be functional because they would not be able to obtain valid
addresses.
Port bypass circuits (PBCs) allow devices to be inserted into unpopulated locations or removed from the loop
with loop operation recovery after a brief interruption. These PBCs are located external to the FC-AL device.
Port Bypass
Circuit
From Previous
Drive
To Next
Drive
Port Bypass
Circuit N–1
Port Bypass
Circuit N+1
MUX
Select
Serial
In
Serial
Out
Drive N–1
Drive N+1
Drive N
Figure 9.
Port bypass circuit physical interconnect
60
NL35 Series FC Product Manual, Rev. D
9.5.2
Connector requirements
Recommended mating SCA part number:
Part description
Positions
Part number
787317-1
Features
AMP Vertical (SCA sequence)
40
40
40
40
With polarization
With polarization
With polarization
With polarization
Berg
71781
Methode
Molex
512-220-91-101N
717431040
The FC-AL SCA device connector is illustrated in Figure 10.
1.618 .003 in
(41.1 0.08 mm)
Pin 20
Pin 40
Pin 1
0.197 .003 in
2 places
Pin 21
(5.00 .08 mm)
.64 in
(16.24 mm)
1.28 in
(32.47 mm)
0.394 .004 in
(10.0 0.10 mm)
1.618 .003 in
(41.10 0.08 mm)
0.226 in
(6.50 mm)
0.039 in
min.
min.
(0.75 mm)
0.264+.007 in
–.010 in
(6.71+0.18 mm)
(–0.25 mm)
1.492 .009 in
(37.90 0.24 mm)
0.024 in
(0.60 mm)
min.
Mating end
Housing
0.079 .010 in
(2.00 .25 mm)
(initial point
of contact)
.05 in
(1.27 mm)
Contact (typ.)
.025 in (0.635 mm)
typ.
0.060 .010 in
(1.52 0.25 mm)
0.106 .010 in
(2.70 0.25 mm)
0.051 .006 in
(1.30 0.16 mm)
2 places
Figure 10.
9.5.3
FC-AL SCA device connector dimensions
Electrical description
Fibre Channel drives use the FC-SCA connector for:
• DC power
• FC-AL interface
• Drive select (device identification)
• Option selection
• Enclosure Services interface
This 40-pin connector is designed to plug directly into a backpanel. External cables are not required.
NL35 Series FC Product Manual, Rev. D
61
9.5.4
Pin descriptions
This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.
Table 29:
FC-SCA pin descriptions
Pin
Signal name
Signal type
Pin
Signal name
Signal type
1*
-EN bypass port A
Low Voltage
TTL output
21
12 Volts charge
2*
12 Volts
22
Ground
3*
12 Volts
23
Ground
4*
12 Volts
24*
25*
26
+Port A_in
-Port A_in
Ground
Diff. PECL input pair
Diff. PECL input pair
Diff PECL output pair
5*
-Parallel ESI
[1]
6*
Ground
7*
Active LED out
Reserved
Open collector out
27*
28*
29
+Port B_in
-Port B_in
Ground
8*
9*
Start_1 [2]
TTL input
TTL input
10*
11*
Start_2 [2]
30*
31*
+Port A_out
-Port A_out
-EN bypass port B
Low Voltage
TTL output
12*
13*
14*
15*
16*
17*
SEL_6
TTL input/output
TTL input/output
TTL input
32
Ground
SEL_5
33*
34*
35
+Port B_out
-Port B_out
Ground
Diff PECL output pair
SEL_4
SEL_3
TTL input/output
Open collector out
TTL input
Fault LED out
36
SEL_2
TTL input/output
TTL input/output
DEV_CTRL_CODE_2
[2]
37
SEL_1
18*
DEV_CTRL_CODE_1
[2]
TTL input
38
SEL_0
TTL input/output
19*
20*
5 Volts
5 Volts
39
40
DEV_CTRL_CODE_0 [2] TTL input
5 Volts charge
*Short pins in mating backpanel connector.
[1] This pin may be connected to external logic to detect the presence of the drive. The drive connects this
pin to the common ground.
[2] Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred elec-
trical connection at the backplane is either open or grounded (open for the ‘1’ setting, grounded for the ‘0’
setting). Alternatively, these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up
resistor (recommended size of 10K ohm), or grounded through some other means.
62
NL35 Series FC Product Manual, Rev. D
9.5.5
FC-AL transmitters and receivers
A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 11. The receiver is required
to provide the AC coupling to eliminate ground shift noise.
68
150
68
.01
TX
Transmitter
TY
RX
Receiver
RY
Differential
Transfer Medium
150
.01
150
Figure 11.
9.5.6
FC-AL transmitters and receivers
Power
Power is supplied through the FC-SCA with support for +5 volts and +12 volts. All of the voltage pins in the
drive connector are the same length.
Four 12 volt pins provide +12 volt power to the drive. 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 pos-
sible among the pins. The maximum current typically occurs while the drive motor is starting.
Three 5 volt pins provide logic power to the drive. The current return for the +5 volt power supply is through the
common ground pins. Distribute supply and return current as evenly as possible among the voltage and
ground pins.
The mating connector pins use shorter contacts to achieve power surge reductions and to aid in “hot plugging”
the drives. There are longer voltage contacts in the connector to enable the drive filter capacitors to charge.
Current to the drive through the long charge pins is limited by the system in which the drive operates. Three of
the +12 volt pins are shorter to allow capacitive pre-charging through the longer +12 volt charge pin. Two of the
+5 volt pins are shorter to allow capacitive precharging through the longer +5 volt charge pin.
9.5.7
Fault LED Out
The Fault LED Out signal is driven by the drive when:
• the drive detects failure of both ports
• the drive detects an internal failure
• the drive receives the appropriate fault LED command from the host
The Fault LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper
+5 volt supply through an appropriate current-limiting resistor. The LED and the current-limiting resistor are
external to the drive.
NL35 Series FC Product Manual, Rev. D
63
9.5.8
Active LED Out
The Active LED Out signal is driven by the drive as indicated in Table 30.
Table 30:
Active LED Out conditions
Normal command activity
LED status
Spun down and no activity
Slow blink (20% on and 80% off a 2 sec cycle)
Spun down and activity (command executing)
Spun up and no activity
On
On
Spun up and activity (command executing)
Spinning up or down
Off
Blinks steadily (50% on and 50% off)
Toggles on/off
Format in progress, each cylinder change
The Active LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the
proper +5 volt supply through an appropriate current limiting resistor. The LED and the current limiting resistor
are external to the drive.
9.5.9
Enable port bypass signals
The – Enable Bypass Port A (– EN BYP Port A) and – Enable Bypass Port B (– EN BYP Port B) signals control
the port bypass circuits (PBC) located external to the disc drive. The PBC allows a loop to remain functional in
the event of a drive failure or removal. When these signals are active, low, the PBC bypasses the drive on the
associated port. When an Enable Bypass signal is active, the corresponding Port Bypass LED signal in con-
nector J1 is driven low by the disc drive. A pull down resistor, 1K, located with the PBC should be used to
insure the bypass is enabled if the disc drive is not installed.
The Enable Bypass signal is active under failing conditions within the drive, on detection of the Loop Port
Bypass primitive sequence, or on removal of the drive. In the bypass state the drive continues to receive on the
inbound fibre. Enable Bypass may be deactivated by detection of a Loop Port Enable primitive sequence if the
drive has completed self-test and a hardware failure is not present.
Failure modes detected by the disc drive that will enable bypass include:
• Transmitter/receiver wrap test failure
• Loss of receive clock
• Loss of transmission clock
• Drive interface hardware error
64
NL35 Series FC Product Manual, Rev. D
9.5.10
Motor start controls
The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 31. The state of
these signals can be wired into the backplane socket or driven by logic on the backplane.
Table 31:
Motor start control signals
Case
Start_2
Start_1
Low
Motor spin function
1
2
3
Low
High
Low
Motor spins up at DC power on.
Low
Motor spins up only when SCSI Start command is received.
High
Motor spins up after a delay of 12 seconds times the modulo 8 value of
the numeric SEL ID of the drive from DC power on.
4
High
High
The drive will not spin up.
9.5.11
SEL_6 through SEL_0 ID lines
The SEL_6 through SEL_0 ID lines determine drive address, and, optionally, for an Enclosure Services Inter-
face. When the Parallel ESI line is high, the enclosure backpanel must provide address information on the SEL
line. Refer to table 32 for a mapping of SEL to FC-AL physical addresses (AL_PA). You can think of the SEL
lines as the equivalent of a backpanel logic plug. The drives does not provide pull up resistors on these lines.
The backpanel is required to provide high and low inputs to the SEL_ID lines per the specifications in table 34
on page 67.
Note. Table 32 gives AL_PA values for each SEL value. The first entry in the table is SEL_ID 00. The last
entry is SEL_ID 7D. SEL_ID 7E is AL_PA 00 which is not valid for an NL_Port, so is not included in
the table. Also, SEL_ID 7Fh does map to a valid AL_PA; however, this value signals the drive that
physical addresses are not being assigned using the SEL lines and that a “soft” address will be
determined by FC-AL loop initialization.
When the Parallel ESI line is low, the enclosure backpanel logic switches to ESI mode if supported. There are
two modes of ESI, seven bits of enclosure status and a bidirectional mode. ESI support and the mode are
determined by the drive using a discovery process. Refer to the Fibre Channel Interface Manual for a descrip-
tion of ESI operation.
9.5.11.1
Parallel Enclosure Services Interface (ESI)
The parallel ESI line is an output from the drive. This line provides the enclosure with an indication of the
present function of the SEL lines. A high level, the default state, indicates the drive requires address informa-
tion on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not sup-
port ESI on any or all drive locations. It may only support the address function. Support of ESI is discovered by
the drive. Refer to the Fibre Channel Interface Manual for a description of ESI operations.
NL35 Series FC Product Manual, Rev. D
65
Table 32:
Arbitrated loop physical address (AL_PA) values
AL_PA
(hex)
SEL ID
(hex)
Setting
(dec)
AL_PA
(hex)
SEL ID
(hex)
Setting
(dec)
AL_PA
(hex)
SEL ID
(hex)
Setting
(dec)
EF
E8
E4
E2
E1
E0
DC
DA
D9
D6
D5
D4
D3
D2
D1
CE
CD
CC
CB
CA
C9
C7
C6
C5
C3
BC
BA
B9
B6
B5
B4
B3
B2
B1
AE
AD
AC
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
A3
9F
9E
9D
9B
98
97
90
8F
88
84
82
81
80
7C
7A
79
76
75
74
73
72
71
6E
6D
6C
6B
6A
69
67
66
65
63
5C
5A
59
56
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
4D
4C
4B
4A
49
47
46
45
43
3c
3A
39
36
35
34
33
32
31
2E
2D
2C
2B
2A
29
27
26
25
23
1F
1E
1D
1B
18
17
10
0F
08
56
57
58
59
5A
5B
5C
5D
5E
5F
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
77
78
79
7A
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
20
21
22
23
24
66
NL35 Series FC Product Manual, Rev. D
9.5.12
Device control codes
The drive inputs a Device Control Code on the DEV_CTRL_CODE lines at power up to determine the link rate
on the Fibre Channel ports. Both ports run at the same rate. If the backpanel does not connect to these lines,
the drive has 10K ohm pull up resistors that default the device control code to 7 (1.0625 GHz). Table 33 lists
the supported codes.
Table 33:
Device control code values
2 (pin 17)
1 (pin 18)
0 (pin 39)
Definition
0
0
0
0
1
1
1
1
0
1
0
1
0
1
0
1
Reserved for Power failure warning.
Reserved for auto negotiation of link rate.
Reserved.
0
0
1
1
0
0
1
1
Reserved.
Reserved.
Reserved.
2.125 GHz operation on both ports.
1.0625 GHz operation on both ports.
9.6
Signal characteristics
This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 29
on page 62 for signal type and signal name information.
9.6.1
TTL input characteristics
Table 34 provides the TTL characteristics.
Table 34:
TTL characteristics
State
Voltage
Current
Input high
Input low
1.9 < VIH < 5.5V
-0.5V < VIL < 0.9V
2.4 < VOH < 5.25V
VOL < 0.5V
IIH = ±500nA max.
IOL = ±500nA max.
IOH < -3mA
Output high (-EN Bypass A, B)
Output low (-EN Bypass A, B)
Output high (-Parallel ESI)
IOL < 3mA
2.4 < VOH < 0.9 VCC
VOH > 0.9VCC
IOH < -2.4mA
I
OH < -500µA
Output low (-Parallel ESI)
0 < VOL < .45V
IOL < 2.4mA
IOH < -1.6mA
Output high (all other outputs)
2.4 < VOH < 0.9 VCC
VOH > 0.9VCC
I
OH < -500µA
Output low (all other outputs)
0 < VOL < .45V
IOL < 1.6mA
NL35 Series FC Product Manual, Rev. D
67
9.6.2
LED driver signals
Fault and Active LED signals are located in the FC-SCA connector (J1). See Table 35 for the output character-
istics of the LED drive signals.
Table 35:
LED drive signal
State
Current drive available
Output voltage
LED off, high
LED on, low
0 < IOH < 100µA
IOL < -30 mA
0 < VOL < 0.8V
9.6.3
Differential PECL output
The serial PECL output signal voltage characteristics are provided in Table 36. The outputs are not AC coupled
in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to
isolate potentially different DC characteristics of the outputs and the receiver.
Table 36:
Differential PECL output characteristics
Parameter
Description
Serial output voltage swing
600 < Vout < 1300 mV
Figure 12 provides the data output valid eye diagram relative to the bit cell time. Table 38 lists the data values.
Bit Time
XMIT Eye
Figure 12.
9.6.4
Transmit eye diagram
Differential PECL input
The serial PECL input signal voltage characteristics are provided in Table 37.
Table 37:
Differential PECL input characteristics
Parameter
Description
Notes
Serial input voltage swing
400 < Vin < 2.000 mV
AC coupled
68
NL35 Series FC Product Manual, Rev. D
Figure 13 provides the data valid eye diagram for typical and minimum requirements to recover data at the
specified interface error rate. The inputs are AC coupled on the drive. Table 38 lists the data values.
Bit Time
RCV Eye
(typical)
(minimum)
Figure 13.
Table 38:
Receive eye diagram
Eye diagram data values
Link rate
1 GHz
2 GHz
Bit time
941 ps
470 ps
XMIT eye
725 ps min.
659 ps
315 ps min.
305 ps
Typical
RCV eye
Minimum
395 ps
226 ps
NL35 Series FC Product Manual, Rev. D
69
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NL35 Series FC Product Manual, Rev. D
10.0
Seagate Technology support services
Internet
For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is
available 24 hours daily by email for your questions.
Presales Support:
Technical Support:
Warranty Support:
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manage their Seagate account functions. Submit pricing requests, orders and returns through a single,
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Technical Support
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centers. Have your system configuration information and your “ST” model number available.
SeaTDD™ (+1-405-324-3655) is a telecommunications device for the deaf (TDD). You can send questions or
comments 24 hours daily and exchange messages with a technical support specialist during normal business
hours for the call center in your region.
NL35 Series FC Product Manual, Rev. D
71
Customer Service Operations
Warranty Service
Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct
customers should contact their Seagate Customer Service Operations (CSO) representative for warranty-
related issues. Resellers or end users of drive products should contact their place of purchase or Seagate
warranty service for assistance. Have your serial number and model or part number available.
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For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the
Asia/Pacific Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,
72
NL35 Series FC Product Manual, Rev. D
buffer
Index
data 8
space 13
Numerics
12 volt
pins 63
A
C
acoustics 32
actuator 9
capacity
unformatted 11
addresses 60
condensation 28
illustrated 40
altitude 28
ambient 28
ANSI documents
SCSI 5
connect/disconnect 12
connector
arbitration 39
auto write and read reallocation
programmable 8
illustrated 61
requirements 61
cooling 40
CRC 19
B
error 18
CS 45
backpanel 61
backplane 65
D
data block size
NL35 Series FC Product Manual, Rev. D
73
data heads
read/write 11
data rate
enable bypass
internal 11
signal 64
state 19
environmental
requirements 25
limits 28
description 7
DEV_CTRL_CODE 67
devices 39
requirements 17
error
management 35
rates 17
error correction code
extended link service
frames 43
dimensions 33
Disconnect/reconnect control (page 02h) command
Download microcode with offsets and save mode (7)
drive 31
drive capacity
programmable 10
F
fabric 48
FAN 48
FC-AL
document 5
FCP
features 8
interface 43
firmware 8
E
electrical
specifications 25
corruption 54
74
NL35 Series FC Product Manual, Rev. D
FLOGI
requirements 43
interleave 8
format 39
function
J
jumpers 39
L
latency
LBdata 53
G
gradient 28
grounding 41
H
HDA 41
heads
humidity 28
disruption 19
initialization 39
loop position
loop position report
I
IC 45
Information exceptions control page (1Ch) command
M
installation 39
guide 5
maintenance 17
interface 39
miscellaneous feature support
description 60
errors 18
illustrated 60
physical 60
NL35 Series FC Product Manual, Rev. D
75
miscellaneous status support
OPEN Full Duplex
OPEN half duplex
orientation 12
OS 45
overhead time
Busy 59
Good 59
Intermediate/good 59
Mode select
P
P_LOGI
packaged 29
PBdata 53
PCBA 41
performance characteristics
detailed 11
description 60
command 50
Mode sense
command 51
motor start
controls 65
option 13
mounting 41
holes 41
orientations 39
MTBF 19
N
payload 45
noise
audible 3
temperature 28
accept 46
power 63
O
old port state
dissipation 27
76
NL35 Series FC Product Manual, Rev. D
sequencing 26
reliability 9
private loop
public loop
specifications 17
resonance 29
Rigid disc drive geometry page
command 51
Q
S
safety 3
SCSI interface
Search data
seek error
defined 18
rate 17
R
receive eye
lines 65
Self-Monitoring Analysis and Reporting Technology
service
diagram 69
receivers 63
life 17
reference
shielding 3
shipping 24
documents 5
NL35 Series FC Product Manual, Rev. D
77
Seagate Technology LLC
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Publication Number: 100343673, Rev. D, Printed in USA
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