Seagate ST94811AB User Manual

Product Manual  
®
Momentus Blade Server  
ST94811AB  
100339697  
Rev. B  
August 2007  
Contents  
5.0  
Momentus Blade Server Product Manual, Rev. B  
i
ii  
Momentus Blade Server Product Manual, Rev. B  
iv  
Momentus Blade Server Product Manual, Rev. B  
1.0  
Introduction  
This manual describes the functional, mechanical and interface specifications for the Seagate® Momentus™  
Blade Server drive:  
• ST94811AB  
These drives provide the following key features:  
• 5,400-RPM spindle speed and 8 Mbytes combine for superior performance.  
• Quiet operation. Fluid Dynamic Bearing (FDB) motor.  
• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.  
• Tunneling Magnetoresistive (TMR) recording heads.  
• State-of-the-art cache and on-the-fly error-correction algorithms.  
• Full-track multiple-sector transfer capability without local processor intervention.  
• 800 Gs nonoperating shock and 225 Gs operating shock.  
• SeaTools™ diagnostic software performs a drive self-test that eliminates unnecessary drive returns.  
• The 3D Defense System™, which includes Drive Defense, Data Defense, and Diagnostic Defense, offers the  
industry’s most comprehensive protection for disc drives.  
• Support for S.M.A.R.T. drive monitoring and reporting.  
• Support for Read Multiple and Write Multiple commands.  
• Support for autodetection of master/slave drives that use cable select (CSEL).  
Figure 1. Momentus disc drive  
Momentus Blade Server Product Manual, Rev. B  
1
                                               
2
Momentus Blade Server Product Manual, Rev. B  
2.0  
Drive specifications  
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal  
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate  
ST94811AB model drives.  
2.1  
Specification summary  
The specifications listed in this table are for quick reference. For details on specification measurement or defi-  
nition, see the appropriate section of this manual.  
Table 1:  
Specifications  
Drive specification  
ST94811AB  
Formatted Gbytes (512 bytes/sector)  
Guaranteed sectors  
40  
78,140,160  
Bytes per sector  
512  
Physical read/write heads  
Discs  
2
1
Cache (Mbytes)  
2
Recording density, BPI (bits/inch max)  
Track density, TPI (tracks/inch max)  
642,000  
100,780  
2
Areal density (Mbits/inch max)  
65  
Spindle speed (RPM)  
5,400  
Internal data transfer rate OD (Mbytes/sec max)  
Sustained data transfer rate OD (Mbytes/sec)  
I/O data transfer rate (Mbytes/sec max)  
ATA data transfer modes supported  
Height  
48.25  
34.5  
100  
PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5  
9.5 +/–0.2 mm (0.374 +/–.0078 inches)  
Width  
69.85 +/–0.25 mm (2.75 +/–0.0098 inches)  
Length  
100.2 +/–0.25 mm (3.945 +/–0.0098 inches)  
Weight (typical)  
99 grams (0.218 lb.)  
Average latency (msec)  
5.6  
Power-on to ready (sec typical)  
Standby to ready (sec typical)  
Startup current 5V (peak)  
3.9  
2.6 sec  
1.2 amps  
Track-to-track seek time (msec typical)  
Average seek time (msec typical)  
Average seek, read (msec typical)  
Average seek, write (msec typical)  
1.5 (read), 2.0 (write)  
12.0  
12.0  
14.0  
Momentus Blade Server Product Manual, Rev. B  
3
         
Table 1:  
Specifications (Continued)  
Drive specification  
ST94811AB  
Full-stroke seek (msec)  
Seek power (typical)  
22 (typical); 26 (max)  
2.4 watts  
Read/write power (typical)  
Idle, performance mode (typical)  
Standby mode  
2.4 watts  
2.5 watts  
0.36 watts (typical)**  
0.36 watts (typical)**  
5V ± 5%  
Sleep mode  
Voltage tolerance (including noise)  
Ambient temperature  
5° to 55°C (operating)  
–40° to 65°C (nonoperating)  
Temperature gradient (°C per hour max)  
Relative humidity (noncondensing)  
20°C (operating)  
30°C (nonoperating)  
5% to 90% (operating)  
5% to 95% (nonoperating)  
Relative humidity gradient  
30% per hour max  
Wet bulb temperature (°C max)  
33°C (operating)  
40°C (nonoperating)  
Altitude, operating  
–192.12 m to 3,048 m (–650 ft to 10,000+ ft)  
Altitude, nonoperating (below mean sea level, max)  
Shock, operating (Gs max at 2 msec)  
Shock, nonoperating (Gs max at 2 msec)  
Shock, nonoperating (Gs max at 1 msec)  
Shock, nonoperating (Gs max at 0.5 msec)  
–304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)  
225  
800  
800  
400  
Vibration, operating (max displacement may apply below 10  
hz)  
1.0 Gs (0 to peak, 5–500 Hz)  
Vibration, nonoperating (max displacement may apply below 5.0 Gs  
22 hz)  
(0 to peak, 5–500 Hz)  
Drive acoustics, sound power (bels)  
Idle*  
2.3 (typical)  
2.5 (max)  
Performance seek  
3.0 (typical)  
3.2 (max)  
14  
Nonrecoverable read errors  
1 per 10 bits read  
Mean time between failures (power-on hours)  
500,000 hours at 25°C ambient temperature  
8,760 Power On Hours/year at nominal power.  
Max case temperature: 40°C  
Load/Unload (U/UL) cycles  
25°C, 50% relative humidity  
300,000 software-controlled power on/off cycles  
20,000 hard power on/off cycles  
32°C, 80% relative humidity  
5°C, 80% relative humidity  
5°C, 10% relative humidity  
55°C, 16% relative humidity  
100,000 software-controlled power on/off cycles  
20,000 hard power on/off cycles  
Service life  
Warranty  
5 years  
1 year  
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and  
power to operational levels.  
**Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby modes  
will not contribute to battery power consumption.  
4
Momentus Blade Server Product Manual, Rev. B  
2.2  
Formatted capacity  
Model  
ST94811AB  
Formatted capacity  
Guaranteed sectors  
Bytes per sector  
40 Gbytes  
78,140,160  
512  
2.3  
Default logical geometry  
Cylinders  
Read/write heads  
Sectors per track  
16,383  
16  
63  
LBA mode  
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,  
where n is the number of guaranteed sectors as defined above.  
2.4  
Physical organization  
Model  
ST94811AB  
Read/write heads  
Number of discs  
2
1
2.5  
Recording and interface technology  
Technology  
Specification  
Interface  
Parallel ATA  
Recording method  
RLL 0,11  
Recording density BPI (bits/inch max)  
Track density TPI (tracks/inch max)  
642,000  
100,780  
2
Areal density (Mbits/inch max)  
65  
Spindle speed (RPM) (± 0.2%)  
Internal data transfer rate OD (Mbytes/sec max)  
Sustained data transfer rate OD (Mbytes/sec max)  
I/O data transfer rate (Mbytes/sec max)  
Interleave  
5,400  
48.25  
34.5  
100 (Ultra DMA mode 5)  
1:1  
Cache buffer  
ST94811AB  
8 Mbytes (8,192 kbytes)  
Momentus Blade Server Product Manual, Rev. B  
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2.6  
Physical characteristics  
Height  
(mm)  
(inches)  
9.5 +/–0.2  
0.374 +/–0.0078  
Width  
(mm)  
(inches)  
69.85 +/–0.25  
2.75 +/–0.0098  
Length  
(mm)  
(inches)  
100.2 +/–0.25  
3.945 +/–0.0098  
Typical weight  
(grams)  
(pounds)  
99  
0.218  
2.7  
Seek time  
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using  
drive diagnostics. The specifications below are defined as follows:  
• Track-to-track seek time is an average of all possible single-track seeks in both directions.  
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between  
random tracks, less overhead.  
Typical seek times (msec)*  
Track-to-track  
Read  
1.5  
Write  
2.0  
Average  
12.0  
22.0  
5.6  
14.0  
26.0  
5.6  
Full-stroke  
Average latency  
*Measured in performance mode  
Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks,  
regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values.  
However, due to the manner in which these drives are formatted, benchmark tests that include command  
overhead or measure logical seeks may produce results that vary from these specifications.  
2.8  
Time to ready  
Time to ready  
Typical  
3.9  
Max  
8
Power-on to Ready (sec)  
Standby to Ready (sec)  
2.6  
8
6
Momentus Blade Server Product Manual, Rev. B  
                                 
2.9  
Power specifications  
The drive receives DC power (+5V) through the interface connector.  
2.9.1 Power consumption  
Power requirements for the drives are listed in the table on page 7. Typical power measurements are based on  
an average of drives tested, under nominal conditions, using 5.0V input voltage at 25°C ambient temperature.  
• Spinup power  
Spinup power is measured fromthe time ofpower-onto thetimethat the drive spindle reaches operating speed.  
• Seek mode  
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does  
not execute a read or write operation. Servo electronics are active. Seek mode power is measured based on  
three random seek operations every 100 msecs. This mode is not typical.  
Read/write power and current  
Read/write power is measured with the heads on track, based on three 63 sector read or write operations  
every 100 msecs.  
• Operating power and current  
Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each  
10 reads) and 20 percent drive idle mode.  
• Idle mode power  
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in  
a random track location.  
• Standby mode  
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/  
write electronics are in power-down mode.  
Table 2:  
DC power  
Power dissipation (watts)  
Spinup  
Average (watts, 25° C)  
5V typ amps  
1.2  
0.5  
Idle, performance mode  
2.50  
Operating 40% r/w.  
40% seek, 20% inop.  
2.87  
2.4  
0.72  
0.48  
0.48  
0.48  
0.07  
0.07  
Seeking  
Read  
2.4  
Write  
2.4  
Standby  
Sleep  
0.36  
0.36  
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and  
power to operational levels.  
Momentus Blade Server Product Manual, Rev. B  
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2.9.1.1  
Typical current profile  
+5 Volt Current during spindle start — Typical Amperes  
1.2  
1.0  
0.8  
Amps  
0.6  
0.4  
0.2  
0.0  
4.5  
0.0  
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
Seconds  
Figure 2. Typical 5V startup and operation current profile  
2.9.2  
Conducted noise  
Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on  
the +5 volt line.  
Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave  
injected noise at up to 10 MHz.  
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write  
current.  
2.9.3  
Voltage tolerance  
Voltage tolerance (including noise):  
5V ± 5%  
8
Momentus Blade Server Product Manual, Rev. B  
                 
2.10  
Environmental specifications  
Ambient temperature  
2.10.1  
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.  
Actual drive case temperature should not exceed 40°C (104°F) within the operating ambient conditions.  
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.  
Operating  
5° to 55°C (41° to 131°F)  
Nonoperating  
–40° to 65°C (–40° to 153°F)  
2.10.2  
Temperature gradient  
Operating  
20°C per hour (68°F per hour max), without condensation  
30°C per hour (86°F per hour max)  
Nonoperating  
2.10.3  
Humidity  
2.10.3.1  
2.10.3.2  
2.10.4  
Relative humidity  
Operating 5% to 90% noncondensing (30% per hour max)  
Nonoperating 5% to 95% noncondensing (30% per hour max)  
Wet bulb temperature  
Operating 33°C (91.4°F max)  
Nonoperating 40°C (104°F max)  
Altitude  
Operating  
Nonoperating  
–198.12 m to 3,048 m (–650 ft to 10,000+ ft)  
–304.8 to 12,192 m (–1,000 ft to 40,000+ ft)  
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2.10.5  
Shock  
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive  
mounting screws. Shock may be applied in the X, Y, or Z axis.  
2.10.5.1  
Operating shock  
These drives comply with the performance levels specified in this document when subjected to a maximum  
operating shock of 225 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more  
than two times per second.  
2.10.5.2  
Nonoperating shock  
The nonoperating shock level that the drive can experience without incurring physical damage or degradation  
in performance when subsequently put into operation is 800 Gs based on a nonrepetitive half-sine shock pulse  
of 2 msec duration.  
The nonoperating shock level that the drive can experience without incurring physical damage or degradation  
in performance when subsequently put into operation is 800 Gs based on a nonrepetitive half-sine shock pulse  
of 1 msec duration.  
The nonoperating shock level that the drive can experience without incurring physical damage or degradation  
in performance when subsequently put into operation is 400 Gs based on a nonrepetitive half-sine shock pulse  
of 0.5 msec duration.  
2.10.6  
Vibration  
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the  
drive mounting screws. Vibration may be applied in the X, Y, or Z axis.  
2.10.6.1  
Operating vibration  
The following table lists the maximum vibration levels that the drive may experience while meeting the perfor-  
mance standards specified in this document.  
5–500 Hz 1.0 Gs (0 to peak). Max displacement may apply below 10 Hz.  
2.10.6.2  
Nonoperating vibration  
The following table lists the maximum nonoperating vibration that the drive may experience without incurring  
physical damage or degradation in performance when subsequently put into operation.  
5–500 Hz  
5.0 Gs (0 to peak). Max displacement may apply below 22 Hz.  
10  
Momentus Blade Server Product Manual, Rev. B  
               
2.11  
Acoustics  
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-  
surements are consistent with ISO document 7779. Sound power measurements are taken under essentially  
free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.  
Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined  
by the following equation:  
(Number of seeks per second = 0.4 / (average latency + average access time)  
Table 3:  
Drive level acoustics  
Acoustic mode  
Idle*  
Performance Seek  
2.3 bels (typ)  
2.5 bels (max)  
3.0 bels (typ)  
3.2 bels (max)  
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and  
power to operational levels.  
2.12  
Electromagnetic immunity  
When properly installed in a representative host system, the drive operates without errors or degradation in  
performance when subjected to the radio frequency (RF) environments defined in the following table:  
Table 4:  
Electromagnetic immunity  
Performance  
level  
Reference  
standard  
Test  
Description  
Electrostatic discharge  
Radiated RF immunity  
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV  
B
A
EN 61000-4-2: 95  
80 to 1,000 MHz, 3 V/m,  
80% AM with 1 kHz sine  
900 MHz, 3 V/m, 50% pulse modulation @  
200 Hz  
EN 61000-4-3: 96  
ENV 50204: 95  
Electrical fast transient  
Surge immunity  
± 1 kV on AC mains, ± 0.5 kV on external I/O  
± 1 kV differential, ± 2 kV common, AC mains  
B
B
A
EN 61000-4-4: 95  
EN 61000-4-5: 95  
EN 61000-4-6: 97  
Conducted RF immunity  
150 kHz to 80 MHz, 3 Vrms, 80% AM with 1  
kHz sine  
Voltage dips, interrupts  
0% open, 5 seconds  
0% short, 5 seconds  
40%, 0.10 seconds  
70%, 0.01 seconds  
C
C
C
B
EN 61000-4-11: 94  
Momentus Blade Server Product Manual, Rev. B  
11  
                             
2.13  
Reliability  
Measurement type  
Specification  
14  
Nonrecoverable read errors  
Mean time between failures  
1 per 10 bits read, max.  
500,000 power-on hours (8,760 POH/year)  
At nominal power, 25°C ambient temperature.  
Max case temperature: 40°C at the case measurement location shown in Figure 4.  
Load/Unload (U/UL)  
25°C, 50% relative humidity  
300,000 software-controlled power on/off cycles  
20,000 hard power on/off cycles  
32°C, 80% relative humidity  
5°C, 80% relative humidity  
5°C, 10% relative humidity  
55°C, 16% relative humidity  
100,000 software-controlled power on/off cycles  
20,000 hard power on/off cycles  
Service life  
Warranty  
5 years  
1 year  
2.14  
Agency certification  
2.14.1  
Safety certification  
The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections  
of IEC950 and EN 60950 as tested by TUV North America.  
2.14.2  
Electromagnetic compatibility  
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec-  
tromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product  
standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and  
the immunity levels are defined by EN 55024.  
Seagate uses an independent laboratory to confirm compliance with the EC directives specified in the previous  
paragraph. Drives are tested in representative end-user systems. Although CE-marked Seagate drives comply  
with the directives when used in the test systems, we cannot guarantee that all systems will comply with the  
directives. The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O  
cable (if necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators  
should confirm EMC compliance and provide CE marking for their products.  
12  
Momentus Blade Server Product Manual, Rev. B  
                                                         
Korean RRL  
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with para-  
graph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic  
Compatibility (EMC) Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information  
and Communication Republic of Korea.  
These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic Susceptibil-  
ity (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a Korean-recog-  
nized lab.  
• EUT name (model number): ST94811AB.  
• Certificate numbers:  
ST94811AB  
E-H011-03-1189(B)  
• Trade name or applicant: Seagate Technology  
• Manufacturing date: June 2004  
• Manufacturer/nationality: USA and Singapore  
Australian C-Tick (N176)  
If these models have the C-Tick marking, they comply with the Australia/New Zealand Standard AS/NZS3548  
1995 and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communi-  
cation Authority (ACA).  
2.14.3  
FCC verification  
These drives are intended to be contained solely within a personal computer or similar enclosure (not attached  
as an external device). As such, each drive is considered to be a subassembly even when it is individually mar-  
keted to the customer. As a subassembly, no Federal Communications Commission verification or certification  
of the device is required.  
Seagate Technology LLC has tested this device in enclosures as described above to ensure that the total  
assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B  
computing device, pursuant to Subpart J, Part 15 of the FCC rules. Operation with noncertified assemblies is  
likely to result in interference to radio and television reception.  
Radio and television interference. This equipment generates and uses radio frequency energy and if not  
installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio  
and television reception.  
This equipment is designed to provide reasonable protection against such interference in a residential installa-  
tion. However, there is no guarantee that interference will not occur in a particular installation. If this equipment  
does cause interference to radio or television, which can be determined by turning the equipment on and off,  
you are encouraged to try one or more of the following corrective measures:  
• Reorient the receiving antenna.  
• Move the device to one side or the other of the radio or TV.  
• Move the device farther away from the radio or TV.  
• Plug the computer into a different outlet so that the receiver and computer are on different branch outlets.  
If necessary, you should consult your dealer or an experienced radio/television technician for additional sug-  
gestions. You may find helpful the following booklet prepared by the Federal Communications Commission:  
How to Identify and Resolve Radio-Television Interference Problems. This booklet is available from the Super-  
intendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication num-  
ber 004-000-00345-4.  
Momentus Blade Server Product Manual, Rev. B  
13  
                 
14  
Momentus Blade Server Product Manual, Rev. B  
3.0  
Configuring and mounting the drive  
This section contains the specifications and instructions for configuring and mounting the drive.  
3.1  
Handling and static discharge precautions  
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic dis-  
charge (ESD) hazards. Observe the following standard handling and static-discharge precautions:  
Caution:  
• Keep the drive in the electrostatic discharge (ESD) bag until you are ready for installation to limit the drive’s  
exposure to ESD.  
• Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal  
chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire  
installation procedure.  
• Handle the drive only by its edges or frame.  
• The drive is fragile—handle it with care. Do not press down on the drive top cover.  
• Always rest the drive on a padded, antistatic surface until you mount it in the computer.  
• Do not touch the connector pins or the printed circuit board.  
• Do not remove the factory-installed labels from the drive or cover them with additional labels. Removal voids  
the warranty. Some factory-installed labels contain information needed to service the drive. Other labels are  
used to seal out dirt and contamination.  
3.2  
Jumper settings  
3.2.1  
Master/slave configuration  
Use the options jumper block shown in Figure 3 to configure the drive for operation. This jumper block is the 4-  
pin header adjacent to pins 1 and 2 of the I/O signal pins. For additional information about using the Cable  
select option, see Section 3.2.2.  
The “Master or single drive” option is the factory default setting.  
Drive is master (or single drive)  
Drive is slave  
Cable select  
Figure 3. Jumper settings  
Momentus Blade Server Product Manual, Rev. B  
15  
                     
3.2.2  
Cable-select option  
Computers that use cable select determine the master and slave drives by selecting or deselecting pin 28,  
CSEL, on the interface bus. Master and slave drives are determined by their physical position on the cable. To  
enable cable select, set a jumper as shown in Figure 3. Refer to your computer manual to determine whether  
your computer supports this option.  
3.3  
Drive mounting  
You can mount the drive using four screws in the side-mounting holes or four screws in the bottom-mounting  
holes. See Figure 4 for drive mounting dimensions. Follow these important mounting precautions when mount-  
ing the drive:  
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.  
• Use only M3 UNC mounting screws.  
• Do not overtighten the mounting screws (maximum torque: 4.0 inch-lb).  
• Four (4) threads (0.080 inches) minimum screw engagement recommended.  
3.945 +/-0.0098  
(100.2 +/-.25)  
.157  
(3.9878)  
0.490 +/- .010  
(12.446 +/- .254)  
.399  
(10.135)  
0.680 +/- .010  
(17.27 +/- .254)  
Breather Hole  
Do not cover  
or seal.  
2.750 +/- .0098  
(69.85 +/- .25)  
inches  
(mm)  
Recommended case  
temp. measurement location  
3.567  
(90.602)  
2X M3 X 0.5-6H  
Mounting holes  
Both sides  
.551  
(13.99)  
.12 min. full thread  
.374 +/- .0078  
(9.5 +/- .2)  
2X .118  
Both sides  
3.567  
(90.60)  
4X M3 X 0.5-6H  
Mounting holes  
.10 min. full thread  
.551  
(13.99)  
2.430  
(61.722)  
.160  
(4.06)  
Figure 4. Mounting dimensions—top, side and end view  
16  
Momentus Blade Server Product Manual, Rev. B  
               
4.0  
ATA interface  
These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports  
ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–5. The  
drive also supports the use of the IORDY signal to provide reliable high-speed data transfers.  
For detailed information about the ATA interface, refer to the draft of AT Attachment with Packet Interface  
Extension (ATA/ATAPI-6), NCITS T13 1410D, subsequently referred to as the Draft ATA-6 Standard.  
4.1  
ATA interface signals and connector pins  
The following table summarizes the signals on the 44-pin ATA interface connector. For a detailed description of  
these signals, refer to the Draft ATA-6 Standard.  
Table 5:  
Connector signals  
Connector  
Contact  
Cable  
Conductor  
Cable  
Conductor  
Connector  
Contact  
Signal Name  
Signal Name  
RESET-  
DD7  
1
1
2
2
Ground  
DD8  
3
3
4
4
DD6  
5
5
6
6
DD9  
DD5  
7
7
8
8
DD10  
DD4  
9
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
42  
44  
DD11  
DD3  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
41  
43  
DD12  
DD2  
DD13  
DD1  
DD14  
DD0  
DD15  
Ground  
DMARQ  
DIOW-  
DIOR-  
IORDY  
DMACK-  
INTRQ  
DA1  
(keypin)  
Ground  
Ground  
Ground  
PSYNC:CSEL  
Ground  
IOCS16-  
PDIAG-  
DA2  
DA0  
CS1FX-  
DASP-  
+5 V (Logic)  
CS3FX-  
Ground  
+5V (Motor)  
No connection  
Ground (Return)  
43  
Momentus Blade Server Product Manual, Rev. B  
17  
                   
4.1.1  
Supported ATA commands  
The following table lists ATA-standard commands that the drive supports. For a detailed description of the ATA  
commands, refer to the Draft ATA-6 Standard. See “S.M.A.R.T commands” on page 24 for details and subcom-  
mands used in the S.M.A.R.T. implementation.  
Table 6:  
Supported commands  
Command name  
Command code (in hex)  
ATA-standard commands  
ATA Device Configuration Overlay  
ATA Service  
B1  
A2  
H
H
Check Power Mode  
Download Microcode  
Execute Device Diagnostics  
Flush Cache  
98 E5  
H,  
H
92  
90  
H
H
E7  
H
Flush Cache Extended  
Format Track (Legacy)  
Identify Device  
EA  
H
50  
H
EC  
H
Idle  
97 E3  
H,  
H
Idle Immediate  
95 E1  
H,  
H
Initialize Device Parameters  
Read Buffer  
91  
H
E4  
H
Read DMA  
C8 C9  
H,  
H
Read DMA Extended  
Read Log Extended  
Read Multiple  
25  
22  
H
H
C4  
H
Read Multiple Extended  
Read Native Max Address  
Read Native Max Address Extended  
Read Sectors  
29  
H
F8  
H
H
27  
20 21  
H,  
H
Read Sectors Extended  
Read Verify Sectors  
Read Verify Sectors Extended  
Recalibrate  
24  
H
40 41  
H,  
H
42  
10  
H
H
Security Disable Password  
Security Erase Prepare  
Security Erase Unit  
Security Freeze Lock  
Security Set Password  
F6  
F3  
F4  
F5  
F1  
H
H
H
H
H
18  
Momentus Blade Server Product Manual, Rev. B  
                                       
Table 6:  
Supported commands (Continued)  
Command name  
Security Unlock  
Seek  
Command code (in hex)  
F2  
H
H
H
70  
91  
Set Drive Parameters  
Set Features  
EF  
H
Set Max Address  
Note: Individual Set Max com-  
F9  
H
Address:  
00  
01  
02  
03  
04  
H
H
H
H
H
mands are identified by the value Password:  
placed in the Set Max Features  
register as defined to the right.  
Lock:  
Unlock:  
Freeze Lock:  
Set Multiple Mode  
Sleep  
C6  
H
99 E6  
H,  
H
S.M.A.R.T.  
B0  
H
Standby  
96 E2  
H, H  
Standby Immediate  
Vendor Unique  
Write Buffer  
94 E0  
H, H  
9A FA FB  
H,  
H
H,  
H
E8  
Write DMA  
CA CB  
H, H  
Write DMA Extended  
Write Log Extended  
Write Multiple  
35  
32  
H
H
C5  
H
Write Multiple Extended  
Write Sectors  
39  
H
30 31  
H,  
H
Write Sectors Extended  
34  
H
ATA-standard power-management commands  
Check Power Mode  
Idle  
98 or E5  
H
H
H
H
H
H
H
97 or E3  
H
Idle Immediate  
95 or E1  
H
Sleep  
99 or E6  
H
Standby  
96 or E2  
H
Standby Immediate  
ATA-standard security commands  
Security Set Password  
Security Unlock  
Security Erase Prepare  
Security Erase Unit  
94 or E0  
H
F1  
F2  
F3  
F4  
H
H
H
H
Momentus Blade Server Product Manual, Rev. B  
19  
                                               
Table 6:  
Supported commands (Continued)  
Command name  
Command code (in hex)  
Security Freeze Lock  
Security Disable Password  
F5  
F6  
H
H
4.1.2  
Identify Device command  
The Identify Device command (command code EC ) transfers information about the drive to the host following  
H
power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table on  
page 27. All reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or  
vary with the state of the drive. See Section 2.0 on page 3 for default parameter settings.  
Thefollowingcommands containdrive-specificfeaturesthatmaynotbeincluded inthe DraftATA-6 Standard.  
Word  
Description  
Value  
0C5A  
Configuration information:  
• Bit 15: 0 = ATA; 1 = ATAPI  
• Bit 7: removable media  
• Bit 6: removable controller  
• Bit 0: reserved  
H
0
1
Number of logical cylinders  
16,383  
2
ATA-reserved  
0000  
16  
H
3
Number of logical heads  
4
Retired  
0000  
0000  
H
H
5
Retired  
6
Number of logical sectors per logical track: 63  
Retired  
003F  
H
7–9  
10–19  
20  
0000  
H
Serial number: (20 ASCII characters, 0000 = none)  
ASCII  
H
Retired  
Retired  
Obsolete  
0000  
0400  
0000  
x.xx  
H
H
H
21  
22  
23–26  
Firmware revision  
(8 ASCII character string, padded with blanks to end of string)  
27–46  
47  
Drive model number: (40 ASCII characters, padded with blanks to end of  
string)  
ST94811AB  
(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write mul-  
tiple (16)  
8010  
H
48  
49  
50  
51  
52  
53  
54  
Reserved  
0000  
H
Standard Standby timer, IORDY supported and may be disabled  
ATA-reserved  
2F00  
H
H
H
H
H
0000  
0200  
0200  
0007  
PIO data-transfer cycle timing mode  
Retired  
Words 54–58, 64–70 and 88 are valid  
Number of current logical cylinders  
xxxx  
H
20  
Momentus Blade Server Product Manual, Rev. B  
       
Word  
55  
Description  
Value  
Number of current logical heads  
Number of current logical sectors per logical track  
Current capacity in sectors  
xxxx  
xxxx  
xxxx  
xxxx  
H
H
H
H
56  
57–58  
59  
Number of sectors transferred during a Read Multiple or Write Multiple  
command  
60–61  
Total number of user-addressable LBA sectors available  
(see Section 2.2 for related information)  
ST94811AB = 78,140,160  
62  
Retired  
0000  
H
63  
Multiword DMA active and modes supported (see note following this table)  
Advanced PIO modes supported (modes 3 and 4 supported)  
Minimum multiword DMA transfer cycle time per word (120 nsec)  
Recommended multiword DMA transfer cycle time per word (120 nsec)  
Minimum PIO cycle time without IORDY flow control (240 nsec)  
Minimum PIO cycle time with IORDY flow control (120 nsec)  
ATA-reserved  
xx07  
H
64  
0003  
0078  
0078  
H
H
H
65  
66  
67  
00F0  
H
H
H
H
H
68  
0078  
0000  
0000  
0000  
69–74  
75  
Queue depth  
76–79  
80  
ATA-reserved  
Major version number  
007E  
H
H
81  
Minor version number  
0000  
82  
Command sets supported  
346B  
H
83  
Command sets supported  
7D01  
H
84  
Command sets support extension  
Command sets enabled  
4003  
H
85  
34xx  
H
H
86  
Command sets enabled  
3xxx  
87  
Command sets enable extension  
4003  
H
88  
Ultra DMA support and current mode  
(see note following this table)  
xx3F  
H
89  
Security erase time  
0000  
0000  
0040  
H
H
H
90  
Enhanced security erase time  
Advanced power management value  
Master password revision code  
Hardware reset value (see description following this table)  
Auto acoustic management setting  
ATA-reserved  
91  
92  
FFFE  
H
93  
xxxx  
xxxx  
H
94  
H
95–127  
128  
0000  
0001  
H
Security status  
H
129–  
159  
Seagate-reserved  
xxxx  
H
Momentus Blade Server Product Manual, Rev. B  
21  
Word  
Description  
Value  
160–  
254  
ATA-reserved  
0000  
H
255  
Integrity word  
xxA5  
H
Note. See the bit descriptions below for words 63, 88, 93 and 94 of the Identify Drive data:  
Description (if bit is set to 1)  
Bit  
0
Word 63  
Multiword DMA mode 0 is supported.  
Multiword DMA mode 1 is supported.  
Multiword DMA mode 2 is supported.  
Multiword DMA mode 0 is currently active.  
Multiword DMA mode 1 is currently active.  
Multiword DMA mode 2 is currently active.  
1
2
8
9
10  
Bit  
0
Word 88  
Ultra DMA mode 0 is supported.  
Ultra DMA mode 1 is supported.  
Ultra DMA mode 2 is supported.  
Ultra DMA mode 3 is supported.  
Ultra DMA mode 4 is supported.  
Ultra DMA mode 0 is currently active.  
Ultra DMA mode 1 is currently active.  
Ultra DMA mode 2 is currently active.  
Ultra DMA mode 3 is currently active.  
Ultra DMA mode 4 is currently active.  
Ultra DMA mode 5 is currently active.  
1
2
3
4
8
9
10  
11  
12  
13  
Bit  
Word 93  
13  
1 = 80-conductor cable detected, CBLID above VIH  
0 = 40-conductor cable detected, CBLID below VIL  
22  
Momentus Blade Server Product Manual, Rev. B  
4.1.3  
Set Features command  
This command controls the implementation of various features that the drive supports. When the drive receives  
this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter-  
rupt. If the value in the register does not represent a feature that the drive supports, the command is aborted.  
Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the  
Features register are defined as follows:  
Table 7:  
Features register values  
02  
03  
Enable write cache (default).  
H
Set transfer mode (based on value in Sector Count register).  
H
Sector Count register values:  
00  
01  
08  
09  
Set PIO mode to default (PIO mode 2).  
Set PIO mode to default and disable IORDY (PIO mode 2).  
PIO mode 0  
H
H
H
H
PIO mode 1  
0A  
PIO mode 2  
H
0B  
PIO mode 3  
H
0C  
PIO mode 4 (default)  
Multiword DMA mode 0  
Multiword DMA mode 1  
Multiword DMA mode 2  
Ultra DMA mode 0  
H
20  
21  
22  
40  
41  
42  
43  
44  
45  
H
H
H
H
H
H
H
H
H
Ultra DMA mode 1  
Ultra DMA mode 2  
Ultra DMA mode 3  
Ultra DMA mode 4  
Ultra DMA mode 5  
05  
55  
82  
Enable advanced power management  
Disable read look-ahead (read cache) feature.  
Disable write cache.  
H
H
H
AA  
Enable read look-ahead (read cache) feature (default).  
Report full capacity available  
H
F1  
H
Note. At power-on, or after a hardware or software reset, the default values of the features are as indi-  
cated above.  
Momentus Blade Server Product Manual, Rev. B  
23  
       
4.1.4  
S.M.A.R.T. commands  
S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive moni-  
tors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines  
that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable.  
S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T.  
commands and implementation, see the Draft ATA-6 Standard.  
SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T. command for D4 ) that elimi-  
H
nates unnecessary drive returns. The diagnostic software ships with all new drives and is also available at:  
This drive is shipped with S.M.A.R.T. features disabled. You must have a recent BIOS or software package that  
supports S.M.A.R.T. to enable this feature. The table below shows the S.M.A.R.T. command codes that the  
drive uses.  
Table 8:  
Supported S.M.A.R.T. commands  
Code in features register  
S.M.A.R.T. command  
D0  
D1  
D2  
D3  
D4  
D5  
D6  
D7  
D8  
D9  
S.M.A.R.T. Read Data  
H
H
H
H
H
H
H
H
H
H
Vendor-specific  
S.M.A.R.T. Enable/Disable Attribute Autosave  
S.M.A.R.T. Save Attribute Values  
S.M.A.R.T. Execute Off-line Immediate (runs DST)  
S.M.A.R.T. Read Log Sector  
S.M.A.R.T. Write Log Sector  
Vendor-specific  
S.M.A.R.T. Enable Operations  
S.M.A.R.T. Disable Operations  
S.M.A.R.T. Return Status  
DA  
H
Note. If an appropriate code is not written to the Features Register, the command is aborted and 0x04  
(abort) is written to the Error register.  
24  
Momentus Blade Server Product Manual, Rev. B  
             
5.0  
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:  
mySeagate  
my.seagate.com is the industry's first Web portal designed specifically for OEMs and distributors. It provides  
self-service access to critical applications, personalized content and the tools that allow our partners to  
manage their Seagate account functions. Submit pricing requests, orders and returns through a single,  
password-protected Web interface-anytime, anywhere in the world.  
spp.seagate.com  
spp.seagate.com supports Seagate resellers with product information, program benefits and sales tools. You  
may register for customized communications that are not available on the web. These communications contain  
product launch, EOL, pricing, promotions and other channel-related information. To learn more about the  
benefits or to register, go to spp.seagate.com, any time, from anywhere in the world.  
Seagate Service Centers  
Presales Support  
Our Presales Support staff can help you determine which Seagate products are best suited for your specific  
application or computer system, as well as product availability and compatibility.  
Technical Support  
Seagate technical support is available to assist you online at support.seagate.com or through one of our call  
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.  
Momentus Blade Server Product Manual, Rev. B  
25  
   
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.  
Data Recovery Services  
Seagate offers data recovery services for all formats and all brands of storage media. Our data recovery  
services labs are currently located throughout the world. . Additional information, including an online request  
form and data loss prevention resources, is available at http://services.seagate.com/index.aspx  
Authorized Service Centers  
Seagate Service Centers are available on a global basis for the return of defective products. Contact your  
customer support representative for the location nearest you.  
USA/Canada/Latin America support services  
For an extensive list of telephone numbers to technical support, presales and warranty service in USA/  
Canada/Latin America, including business hours, go to the "Contact Us" page on www.seagate.com.  
Global Customer Support  
Presales, Technical, and Warranty Support  
Call Center  
USA, Canada,  
and Mexico  
Toll-free  
Direct dial  
1-800-SEAGATE  
+1-405-324-4700  
Data Recovery Services  
Call Center  
Toll-free  
Direct dial  
FAX  
USA, Canada,  
and Mexico  
1-800-475-01435  
+1-905-474-2162  
1-800-475-0158  
+1-905-474-2459  
Europe, the Middle East and Africa Support Services  
For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the  
Middle East and Africa, go to the "Contact Us" page on www.seagate.com.  
Asia/Pacific Support Services  
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,  
go to the "Contact Us" page on www.seagate.com.  
26  
Momentus Blade Server Product Manual, Rev. B  
Download Microcode 18  
Drive Defense 1  
drive diagnostics 6  
drive monitoring 1  
drive self-test 1, 24  
DST 24  
Index  
Numerics  
3D Defense System 1  
A
E
acoustics 11  
electrical fast transient 11  
electromagnetic compatibility 12  
Electromagnetic Compatibility Directive 12  
electromagnetic immunity 11  
electrostatic discharge 11  
EMC compliance 12  
EN 60950 12  
enclosures 13  
environmental specifications 9  
error-correction algorithms 1  
errors 12  
agency certification (regulatory) 12  
altitude 9  
ambient conditions 3  
ambient temperature 6, 9  
areal density 5  
ATA interface 17  
ATA-standard commands 18  
Australian C-Tick 13  
autodetection 1  
average seek time 6  
European Union 12  
Execute Device Diagnostics 18  
B
BPI 5  
buffer 5  
burst 1  
F
failure prediction 24  
FCC verification 13  
Features register 23  
Flush Cache 18  
C
cable select 1  
cable-select option 16  
cache 1, 5  
case temperature 9  
CE mark 12  
Flush Cache Extended 18  
formatted capacity 5  
frequency 11  
certification 12  
Check Power Mode 19  
commands 18  
G
guaranteed sectors 5  
compliance 12  
H
conducted noise 8  
conducted RF immunity 11  
configuring the drive 15  
connector pins 17  
CSA C22.2 (950) 12  
CSEL 16  
handling 15  
heads 1, 5  
height 6  
humidity 9  
C-Tick 13  
current profile 8  
cycles 12  
I
I/O data-transfer rate 5  
Identify Device 18  
Identify Device command 20  
Idle 7, 19  
D
Data Defense 1  
data-transfer rates 1  
DC power 7  
Idle Immediate 19  
Idle mode power 7  
IEC950 12  
density 5  
Information Technology Equipment 12  
Initialize Device Parameters 18  
interface 5, 17  
interface signals 17  
interference 13  
Diagnostic Defense 1  
diagnostic software 1, 24  
discs 5  
dissipation 7  
Momentus Blade Server Product Manual, Rev. B  
27  
interleave 5  
internal data-transfer rate OD 5  
ISO document 7779 11  
R
radiated RF immunity 11  
radio and television interference 13  
radio frequency (RF) 11  
random track location 7  
Read Buffer 18  
J
jumper settings 15  
Read DMA 18  
Read DMA Extended 18  
read errors 12  
K
Korean RRL 13  
Read Multiple 1, 18  
Read Multiple Extended 18  
Read Native Max Address 18  
Read Native Max Address Extended 18  
Read Sectors 18  
Read Sectors Extended 18  
Read Verify Sectors 18  
Read Verify Sectors Extended 18  
read/write heads 5  
read/write power and current 7  
recording and interface technology 5  
recording density 5  
recording heads 1  
recording method 5  
L
LBA mode 5  
length 6  
Load/Unload 12  
logical geometry 5  
M
master/slave 1  
Master/slave configuration 15  
maximum temperature 9  
Mean time between failures (MTBF) 12  
modes 17  
monitoring 1  
mounting the drive 15, 16  
register 23  
relative humidity 9  
reliability 12  
resistance 8  
N
noise 8  
nominal power 3  
S
nonoperating shock 10  
nonoperating vibration 10  
nonrecoverable read errors 12  
S.M.A.R.T. 19  
S.M.A.R.T. commands 24  
S.M.A.R.T. drive monitoring 1  
safety certification 12  
screws 16  
O
operating 7  
SeaTools 1, 24  
operating power and current 7  
operating shock 10  
operating vibration 10  
sectors 5  
security commands 19  
Security Disable Password 20  
Security Erase Prepare 19  
Security Erase Unit 19  
Security Freeze Lock 20  
Security Set Password 19  
Security Unlock 19  
Seek 19  
seek mode 7  
seek time 6  
Seeking 7  
Service Life 12  
P
physical characteristics 6  
physical organization 5  
pins 17  
PIO 17  
power consumption 7  
power dissipation 7  
power on/off cycles 12  
power specifications 7  
power-management commands 19  
Power-on to Ready 6  
precautions 16  
servo electronics 7  
Set Features 19  
Set Features command 23  
Set Max 19  
Set Multiple Mode 19  
28  
Momentus Blade Server Product Manual, Rev. B  
shock 10  
signals 17  
single-track seeks 6  
Sleep 7, 19  
sound 11  
specifications 3  
spindle speed 5  
Spinup 7  
spinup power 7  
Standby 7, 19  
Standby Immediate 19  
Standby mode 7  
Standby to Ready 6  
static-discharge precautions 15  
subassembly 13  
support services 25  
surge immunity 11  
T
technical support services 25  
temperature 9  
temperature gradient 9  
time to ready 6  
TMR 1  
track density 5  
track-to-track seek time 6  
TUV North America 12  
U
UL 1950 12  
V
vibration 10  
voltage 8  
voltage dips, interrupts 11  
voltage tolerance 8  
W
Warranty 12  
weight 6  
wet bulb temperature 9  
width 6  
Write Buffer 19  
Write DMA 19  
Write DMA Extended 19  
Write Multiple 1, 19  
Write Multiple Extended 19  
Write Sectors 19  
Write Sectors Extended 19  
Momentus Blade Server Product Manual, Rev. B  
29  
30  
Momentus Blade Server Product Manual, Rev. B  
Seagate Technology LLC  
920 Disc Drive, Scotts Valley, California 95066-4544, USA  
Publication Number: 100339697, Rev. B, Printed in USA  

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