Seagate MOMENTUS 5400.6 SATA User Manual

Product Manual

Momentus 5400.6 SATA

ST9500325AS ST9400326AS ST9320325AS ST9250315AS ST9160314AS ST9160301AS ST9120315AS ST980313AS

ST9500325ASG ST9320325ASG ST9250315ASG ST9160314ASG ST9120315ASG ST980313ASG

100528359 Rev. F November 2010

LLC in the United States and/or other countries. Momentus and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the pr operty of their respective owners.

No part of this publication may be reproduced in any form without written permission of Seaga te Technology LLC. Call 877-PUB-TEK1(877-782-8351) to request permission.

One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your computer's operating system may use a different standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage. Seagate reserves the right to change, without notice, product offerings or specifications.

Contents

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.8 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.9.2 Deferred spinup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.9.3 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.9.4 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.9.5 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.10 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.10.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.10.4 Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.10.5 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.10.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.11 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.13.1 Free Fall Protection feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.15 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.15.1 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 20

2.15.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . . 20

2.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.0 Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.3.3 S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Momentus 5400.6 SATA Product Manual, Rev. F i

ii Momentus 5400.6 SATA Product Manual, Rev. F

List of Figures

Figure 1. Typical +5V only startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 2. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 3. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 4. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Momentus 5400.6 SATA Product Manual, Rev. F iii

1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus

Standard models Free-fall protection models

• ST9500325AS • ST9500325ASG

• ST9400326AS •

• ST9320325AS • ST9320325ASG

• ST9250315AS • ST9250315ASG

• ST9160314AS • ST9160314ASG

• ST9160301AS

• ST9120315AS • ST9120315ASG

• ST980313AS • ST980313ASG These drives provide the following key features:

• 5400-RPM spindle speed.

• 8-Mbyte buffer.

• Free Fall Protection (on ST9500325ASG, ST9320325ASG, ST9250315ASG, ST9160314ASG, ST9120315ASG, and ST980313ASG models only)

• Quiet operation. Fluid Dynamic Bearing (FDB) motor.

• High instantaneous (burst) data-transfer rates (up to 3.0 Gbits/sec).

• Perpendicular recording technology.

• State -of-the-art cache and on-the-fly error-correction algorithms.

• Native Command Queuing (NCQ) with command ordering.

• Full-track multiple-sector transfer capability without local processor intervention.

• 1000 Gs nonoperating shock and 350 Gs of 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, offe rs 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.

5400.6 SATA model drives:

Momentus 5400.6 SATA Product Manual, Rev. F 1

1.1 About the Serial ATA interface

The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary advantages include:

• Easy installation and configuration with true plug-and-play connectivity. It is not normally necessary to set any jumpers or other configuration options .

• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.

• Scalability to higher performance levels.

In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current system and expect all of your existing applications to work as normal.

The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0 (master) devices.

Note. The host adapter may, optionally, emulate a master/slave environment to host software where two

devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA environment.

The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide backward compatibility with existing host systems and software. The Command and Control Block registers, PIO and DMA data transfers, resets, and interrupts are all emulated.

The Serial ATA host adapter contains a set of registers that shadow the content s of the traditio nal device regi sters, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized AT Attachment” specification. The specification can be downloaded from http://www.serialata.org.

2 Momentus 5400.6 SATA Product Manual, Rev. F

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 the Momentus 5400.6 SATA models.

2.1 Specification summary table

The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual. .

Table 1: Drive specifications for 500, 400 and 320 GB models

Drive specification

Formatted Gbytes (512 bytes/sector)* 500 400 320 Guaranteed sectors 976,773,168 781,422,768 625,142,448 Bytes per sector 512 Physical read/write heads 4 3 Discs 2 2 Cache (Mbytes) 8 Recording density in BPI (bits/inch avg) 1490k Track density TPI (tracks/inch avg) 265k

Areal density (Gbits/inch Spindle speed (RPM) 5400 Average latency (msec) 5.6 Internal transfer rate (Mbits/sec max) 1175 I/O data transfer rate

(Mbytes/sec max) ATA data-transfer modes supported SATA 1.0, Serial ATA Revision 2.6

avg) 394

ST9500325AS ST9500325ASG ST9400326AS

300

PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–6

ST9320325AS ST9320325ASG

Momentus 5400.6 SATA Product Manual, Rev. F 3

Table 1: Drive specifications for 500, 400 and 320 GB models

Drive specification

Average seek, read (msec typical) 14 Full-stroke seek, read (msec max) 30 Startup current, +5V (max) 1 amp Seek power (typical) 1.54 watts Read/write power (typical) Read: 1.40 watts; Write: 1.78 watts Idle mode, low power (typical) 0.67 watts Standby mode 0.20 watts (typical)*** Sleep mode 0.20 watts (typical)*** Voltage tolerance (including noise) +5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) Temperature gradient

(°C per hour max) Relative humidity 5% to 95% (operating)

Relative humidity gradient 30% per hour max Wet bulb temperature

(°C max) Altitude, operating –304.8 m to 3048 m (–1000 ft to 10,000 Altitude, nonoperating

(meters below mean sea level, max) Shock, operating (Gs max at 2 msec) 350 Shock, nonoperating (Gs max at 2 msec) 800 Shock, nonoperating (Gs max at 1 msec) 1000 Shock, nonoperating (Gs max at 0.5 msec) 600 Vibration, operating 1.0 G (0 to peak, 5–500 Hz) Vibration, nonoperating 5.0 Gs (0 to peak, 5–500 Hz) Drive acoustics, sound power (bels) Idle** 2.4 (typical)

Performance seek 2.6 (typical)

Nonrecoverable read errors 1 per 10 Annualized Failure Rate (AFR) 0.48% Load/Unload (U/UL) cycles

25°C, 50% relative humidity

32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 10% relative humidity 55°C, 16% relative humidity

Warranty For information regarding Warranty Support, visit

Supports Hotplug operation per Serial ATA Revision 2.6 specification

ST9500325AS ST9500325ASG ST9400326AS

20°C (operating) 35°C (nonoperating)

5% to 95% (nonoperating)

37.7 (operating) 40 (nonoperating)

+ ft)

–304.8 m to 12,192 m (–1000 ft to 40,000

2.6 (max)

2.7 (max)

bits read

600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles

http://www.sea

Yes (requires COMRESET from host after a hotplug event)

gate.com/www/en-us/support/warranty_&_returns_assistance

+ ft)

ST9320325AS ST9320325ASG

see notes after Table 3.

4 Momentus 5400.6 SATA Product Manual, Rev. F

Table 2: Drive specifications for 250 and 160 GB models

Drive specification

Formatted Gbytes (512 bytes/sector)* 250 160 Guaranteed sectors 488,397,168 312,581,808 Bytes per sector 512 Physical read/write heads 2 Discs 1 Cache (Mbytes) 8 Recording density in BPI (bits/inch avg) 1490k 1238k Track density TPI (tracks/inch avg) 265k 210k

Areal density (Gbits/inch Spindle speed (RPM) 5400 Average latency (msec) 5.6 Internal transfer rate (Mbits/sec max) 1175 I/O data transfer rate

(Mbytes/sec max) ATA data-transfer modes supported SATA 1.0, Serial ATA Revision 2.6

Height (max) 9.5 +/- 0.2 mm (0.374 +/- .0079 inches) Width (max) 69.85 mm +/- 0.25 mm (2.75 +/- 0.0098 inches) Length (max) 100.35 + 0.20 / - 0.25 mm (3.957 + 0.0079 / - 0.0098 inches) Weight (max) 93.5 grams (0.206 lb) 105 grams (0.23 lb) Power-on to ready (sec typical) 3.6 Power-on to ready (sec max) 3.8 Standby to ready (sec typical) 1.8 Standby to ready (sec max) 2 Track-to-track seek time, read (msec typical) 1 Average seek, read (msec typical) 14 Full-stroke seek, read (msec max) 30 Startup current, +5V (max) 1 amp Seek power (typical) 1.54 watts Read/write power (typical) Read: 1.40 watts; Write: 1.78 watts Idle mode, low power (typical) 0.67 watts Standby mode 0.20 watts (typical)*** 0.22 watts (typical)*** Sleep mode 0.20 watts (typical)*** 0.22 watts (typical)*** Voltage tolerance (including noise) +5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) Temperature gradient

(°C per hour max) Relative humidity 5% to 95% (operating)

Relative humidity gradient 30% per hour max Wet bulb temperature

(°C max) Altitude, operating –304.8 m to 3,048 m (–1,000 ft to 10,000

avg) 394 269

ST9250315AS ST9250315ASG

300

PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–6

20°C (operating) 35°C (nonoperating)

5% to 95% (nonoperating)

37.7 (operating) 40 (nonoperating)

ST9160314AS ST9160314ASG ST9160301AS

+ ft)

Momentus 5400.6 SATA Product Manual, Rev. F 5

Table 2: Drive specifications for 250 and 160 GB models

Drive specification

Altitude, nonoperating

ST9250315AS ST9250315ASG

–304.8 m to 12,192 m (–1000 ft to 40,000+ ft)

ST9160314AS ST9160314ASG ST9160301AS

2.6 (max)

Performance seek 2.6 (typical)

2.7 (max)

Nonrecoverable read errors 1 per 10

bits read Annualized Failure Rate (AFR) 0.48% Load/Unload (U/UL) cycles

25°C, 50% relative humidity

32°C, 80% relative humidity 5°C, 80% relative humidity

600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles

600,000 software-controlled power on/off cycles

20,000 hard power on/off cycles 5°C, 10% relative humidity 55°C, 16% relative humidity

Warranty For information regarding Warranty Support, visit

Supports Hotplug operation per Serial ATA

http://www.sea

Yes (requires COMRESET from host after a hotplug event)

gate.com/www/en-us/support/warranty_&_returns_assistance

Revision 2.6 specification

2.0 (typical)

2.2 (max)

2.5 (typical)

2.6 (max)

see notes after Table 3..

6 Momentus 5400.6 SATA Product Manual, Rev. F

Table 3: Drive specifications for 120 and 80 GB models

Drive specification

ST9120315AS ST9120315ASG

ST980313AS ST980313ASG

Formatted Gbytes (512 bytes/sector)* 120 80 Guaranteed sectors 234,441,648 156,301,488 Bytes per sector 512 Physical read/write heads 1 Discs 1 Cache (Mbytes) 8 Recording density in BPI (bits/inch avg) 1490k Track density TPI (tracks/inch avg) 265k Areal density (Gbits/inch2 avg) 394 Spindle speed (RPM) 5400 Average latency (msec) 5.6 Internal transfer rate (Mbits/sec max) 1175 I/O data transfer rate

300

(Mbytes/sec max) ATA data-transfer modes supported SATA 1.0, Serial ATA Revision 2.6

PIO modes 0–4 Multiword DMA modes 0–2

Ultra DMA modes 0–6 Height (max) 9.5 +/- 0.2 mm (0.374 +/- .0079 inches) Width (max) 69.85 mm +/- 0.25 mm (2.75 +/- 0.0098 inches) Length (max) 100.35 + 0.20 / - 0.25 mm (3.957 + 0.0079 / - 0.0098 inches) Weight (max) 93.5 grams (0.206 lb) Power-on to ready (sec typical) 3.6 Power-on to ready (sec max) 3.8 Standby to ready (sec typical) 1.8 Standby to ready (sec max) 2 Track-to-track seek time, read (msec typical) 1 Average seek, read (msec typical) 14 Full-stroke seek, read (msec max) 30 Startup current, +5V (max) 1 amp Seek power (typical) 1.54 watts Read/write power (typical) Read: 1.40 watts; Write: 1.78 watts Idle mode, low power (typical) 0.67 watts Standby mode 0.20 watts (typical)*** Sleep mode 0.20 watts (typical)*** Voltage tolerance (including noise) +5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) Temperature gradient

(°C per hour max)

20°C (operating)

35°C (nonoperating) Relative humidity 5% to 95% (operating)

5% to 95% (nonoperating) Relative humidity gradient 30% per hour max Wet bulb temperature

(°C max)

37.7 (operating)

40 (nonoperating) Altitude, operating –304.8 m to 3048 m (–1000 ft to 10,000+ ft) Altitude, nonoperating

–304.8 m to 12,192 m (–1000 ft to 40,000+ ft) (meters below mean sea level, max)

Momentus 5400.6 SATA Product Manual, Rev. F 7

Table 3: Drive specifications for 120 and 80 GB models

Drive specification

Shock, operating (Gs max at 2 msec) 350 Shock, nonoperating (Gs max at 2 msec) 800 Shock, nonoperating (Gs max at 1 msec) 1,000 Shock, nonoperating (Gs max at 0.5 msec) 600 Vibration, operating 1.0 G (0 to peak, 5–500 Hz) Vibration, nonoperating 5.0 Gs (0 to peak, 5–500 Hz) Drive acoustics, sound power (bels) Idle** 2.4 (typical)

Performance seek 2.5 (typical)

Nonrecoverable read errors 1 per 10 Annualized Failure Rate (AFR) 0.48% Load/Unload (U/UL) cycles

25°C, 50% relative humidity

32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 10% relative humidity 55°C, 16% relative humidity

Warranty For information regarding Warranty Support, visit

Supports Hotplug operation per Serial ATA Revision 2.6 specification

ST9120315AS ST9120315ASG

2.6 (max)

bits read

600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles

http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance

Yes (requires COMRESET from host after a hotplug event)

ST980313AS ST980313ASG

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment

and formatting.

**During periods of drive idle, some offline

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 b

attery power consumption.

2.2 Formatted capacity

Model

activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

Formatted capacity*

Guaranteed sectors

Bytes per sector

ST9500325AS and ST9500325ASG 500 Gbytes 976,773,168 ST9400326AS 400 Gbytes 781,422,768 ST9320325AS and ST9320325ASG 320 Gbytes 625,142,448 ST9250315AS and ST9250315ASG 250 Gbytes 488,397,168

512 ST9160314AS, ST9160301AS and ST9160314ASG 160 Gbytes 312,581,808 ST9120315AS and ST9120315ASG 120 Gbytes 234,441,648 ST980313AS and ST980313ASG 80 Gbytes 156,301,488

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment

and formatting.

8 Momentus 5400.6 SATA Product Manual, Rev. F

2.2.1 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. See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-

bit addressing support of drives with capacities over 137 Gbytes.

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

Drive model Read/write heads Number of discs

ST9500325AS, ST9500325ASG and ST9400326AS 4 2 ST9320325AS and ST9320325ASG 3 2 ST9250315AS, ST9250315ASG, ST9160314AS,

9160301AS and ST9160314ASG

ST9120315AS, ST9120315ASG, ST980313AS and ST

980313ASG

2 1

1 1

2.5 Recording and interface technology

ST9500325AS, ST9500325ASG, ST9400326AS, ST9320325AS, ST9320325ASG, ST9250315AS, ST9250315ASG ST9160314AS, ST9160314ASG, ST9120315AS, ST9120315ASG, ST980313AS, ST980313ASG

Interface Serial ATA (SATA) Recording method Perpendicular Recording density BPI (bits/inch avg) 1490k 1238k Track density TPI (tracks/inch avg) 265k 210k Areal density (Gbits/inch Spindle speed (RPM) (± 0.2% Maximum Internal transfer rate (Mbits/sec) 1175 I/O data-transfer rate (Mbytes/sec max) 300 Interleave 1:1 Cache buffer 8 Mbytes (8192 kbytes)

avg) 394 269

) 5400

ST9160301AS

Momentus 5400.6 SATA Product Manual, Rev. F 9

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