Seagate ST3250312AS, ST3320413AS, ST3750525AS, ST31000524AS, SGTST3000DM0011CH166 User Manual

...

Product Manual

Barracuda

ST31000524AS ST3750525AS ST3500413AS ST3320413AS ST3250312AS ST3160316AS

100636864 Rev. B

March 2011

Document Revision History

Revision Date Description of Change

Rev. A 08/20/2010 Initial release.

Rev. B 03/04/2011 Added Reliability section.

Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Barracuda, SeaTools and SeaTDD 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 property of their respective owners.

When referring to drive capacity, 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

Seagate Technology Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.0 Drive Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1 Specification summary tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.4 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.5 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.8.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.8.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.9.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.9.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.9.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.9.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.9.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.10.1 Test for Prominent Discrete Tones (PDTs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.13 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.14.2 Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.15 Environmental protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.15.1 European Union Restriction of Hazardous Substances (RoHS) Directive . . . . . 25

2.15.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . 25

2.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.0 Configuring and Mounting the Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.1 Handling and static-discharge precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.0 Serial ATA (SATA) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.1 Hot-Plug compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.2 Serial ATA device plug connector pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.3.1 Identify Device command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4.3.3 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Barracuda SATA Product Manual, Rev. B

Figures

Figure 1 Attaching SATA cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 2 Mounting dimensions (1000 and 750GB models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 3 Mounting dimensions (500, 320, 250 and 160GB models) . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Barracuda SATA Product Manual, Rev. B

Seagate Technology Support Services

For information regarding online support and services, visit http://www.seagate.com/www/en-us/about/

contact_us/

Available services include:

• Presales & Technical support

• Global Support Services telephone numbers & business hours

• Authorized Service Centers

For information regarding Warranty Support, visit

http://www.sea

For information regarding data recovery services, visit http://www.i365.com For Seagate OEM and Distribution partner portal, visit https://direct.seagate.com/portal/system For Seagate reseller portal, visit http://spp.seagate.com

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

Barracuda SATA Product Manual, Rev. B 7

8 Barracuda SATA Product Manual, Rev. B

1.0 Introduction

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

ST31000524AS ST3500413AS ST3250312AS ST3750525AS ST3320413AS ST3160316AS

These drives provide the following key features:

• 7200 RPM spindle speed.

• High instantaneous (burst) data-transfer rates (up to 600MB per second).

• Perpendicular recording technology provides the drives with increased areal density.

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

• Native Command Queueing with command ordering to increase performance in demanding applications.

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

• Quiet operation.

• Compliant with RoHS requirements in China and Europe.

• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.

• Support for S.M.A.R.T. drive monitoring and reporting.

• Supports latching SATA cables and connectors.

• Worldwide Name (WWN) capability uniquely identifies the drive.

model drives:

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 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 disk drive in your current system and expect all of your existing applications to work as normal.

The Serial ATA interface connects each disk 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.

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

Note

Barracuda SATA Product Manual, Rev. B 9

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.

Introduction www.seagate.com

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 contents of the traditional device registers, 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 International Organization: Serial ATA Revision 3.0”. The specification can be downloaded from www.sata-io.org.

10 Barracuda SATA 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 the following drive models:

ST31000524AS ST3500413AS ST3250312AS ST3750525AS ST3320413AS ST3160316AS

2.1 Specification summary tables

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

Table 1 Drive specifications summary for 1000 and 750 models

Drive Specification ST31000524AS ST3750525AS

Formatted capacity (512 bytes/sector)* 1000GB 750GB

Guaranteed sectors 1,953,525,168 1,465,149,168

Heads 4 3

Disks 2 2

Bytes per sector 512 512

Default sectors per track 63 63

Default read/write heads 16 16

Default cylinders 16,383 16,383

Recording density (max) 1413kb/in 1413kb/in

Track density (avg) 236 ktracks/in 236 ktracks/in

Areal density (avg) 329Gb/in

Spindle speed 7200 RPM 7200 RPM

Internal data transfer rate (max) 1695Mb/s 1695Mb/s

Sustained data transfer rate OD (max) 125MB/s 125MB/s

I/O data-transfer rate (max) 600MB/s 600MB/s

ATA data-transfer modes supported

Cache buffer 32MB 32MB

Height (max.) 26.1mm / 1.028 in 26.1mm / 1.028 in

Width (max.) 101.6mm /4.0 in (+

Length (max.) 146.99mm / 5.787 in 146.99mm / 5.787 in

Weight (typical) 622g /1.371 lb 622g /1.371 lb

Average latency 4.16ms 4.16ms

Power-on to ready (max.) <10.0s <10.0s

Standby to ready (max.) <10.0s <10.0s

Track-to-track seek time (typical) <1.0ms read

Average seek, read (typical) Average seek, write (typical)

<1.2ms write

<8.5ms typical <9.5ms typical

Multiword DMA modes: 0 to 2

Ultra DMA modes: 0 to 6

0.010 in) 101.6mm /4.0 in (+ 0.010 in)

329Gb/in

PIO modes: 0 to 4

<1.0ms read <1.2ms write

<8.5ms typical <9.5ms typical

Barracuda SATA Product Manual, Rev. B 11

Drive Specifications www.seagate.com

Table 1 Drive specifications summary for 1000 and 750 models (continued)

Drive Specification ST31000524AS ST3750525AS

Startup current (typical) 12V (peak) 2.0A 2.0A

Voltage tolerance (including noise) 5V +10% / -7.5%

Ambient temperature 0° to 60°C (operating)

Temperature gradient 20°C per hour max (operating)

Relative humidity 5% to 95% (operating)

Relative humidity gradient (max.) 30% per hour 30% per hour

Wet bulb temperature (max.) 37.7°C max (operating)

Altitude, operating –304.8m to 3,048m

Altitude, non-operating (below mean sea level, max)

Operational Shock (max) 70 Gs at 2ms 70 Gs at 2ms

Non-Operational Shock (max) 300 Gs at 2ms 300 Gs at 2ms

Vibration, operating 2Hz to 22Hz: 0.25 Gs, Limited displace-

Vibration, non-operating 5Hz to 22Hz: 3.0 Gs

Drive acoustics, sound power

Idle** 2.6 bels (typical)

Seek 2.8 bels (typical)

Non-recoverable read errors 1 per 10

Annulized Failure Rate (AFR) 0.34% 0.34%

Warranty To determine the warranty for a specific drive, use a web browser to access the following web

Contact start-stop cycles 50,000 at 25°C, 50% rel. humidity 50,000 at 25°C, 50% rel. humidity

Supports Hotplug operation per the Serial ATA Revision 2.5 specification

12V +10% / -7.5%

–40° to 70°C (non-operating)

30°C per hour max (non-operating)

5% to 95% (non-operating)

40.0°C max (non-operating)

(–1000 ft to 10,000+ ft)

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

ment 22Hz to 350Hz: 0.50 Gs 350Hz to 500Hz: 0.25 Gs

22Hz to 350Hz: 3.0 Gs 350Hz to 500Hz: 3.0 Gs

2.7 bels (max)

3.0 bels (max)

bits read 1 per 10

page: support.seagate.com/customer/warranty_validation.jsp From this page, click on the “Verify Your Warranty” link. You will be asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive.

Ye s Ye s

5V +10% / -7.5% 12V +10% / -7.5%

0° to 60°C (operating) –40° to 70°C (non-operating)

20°C per hour max (operating) 30°C per hour max (non-operating)

5% to 95% (operating) 5% to 95% (non-operating)

37.7°C max (operating)

40.0°C max (non-operating)

–304.8m to 3,048m (–1000 ft to 10,000+ ft)

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

2Hz to 22Hz: 0.25 Gs, Limited displacement 22Hz to 350Hz: 0.50 Gs 350Hz to 500Hz: 0.25 Gs

5Hz to 22Hz: 3.0 Gs 22Hz to 350Hz: 3.0 Gs 350Hz to 500Hz: 3.0 Gs

2.6 bels (typical)

2.7 bels (max)

2.8 bels (typical)

3.0 bels (max)

bits read

*One GB 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

to operational levels.

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

Table 2 Drive specifications summary for 500GB and 320 models

Drive Specification

Formatted capacity (512 bytes/sector)* 500GB 320GB

Guaranteed sectors 976,773,168 625,142,448

Heads 2 2

Disks 1 1

Bytes per sector 512 512

Default sectors per track 63 63

Default read/write heads 16 16

Default cylinders 16,383 16,383

ST3500413AS ST3320413AS

12 Barracuda SATA Product Manual, Rev. B

www.seagate.com Drive Specifications

Table 2 Drive specifications summary for 500GB and 320 models (continued)

Drive Specification

Recording density (max.) 1413kb/in 1413kb/in

Track density (avg.) 236 ktracks/in 236 ktracks/in

Areal density (avg.) 329Gb/in

Spindle speed 7200 RPM 7200 RPM

Internal data transf

Sustained data transfer

I/O data-transfer rate (max.) 600MB/s 600MB/s

ATA data-transfer modes supported PIO modes: 0 to 4

Cache buffer 16MB 16MB

Height (max) 19.98mm / 0.787 in 19.98mm / 0.787 in

Width (max) 101.6mm / 4.0 in (

Length (max) 146.99mm / 5.787 in 146.99mm / 5.787 in

Weight (typical) 415g / 0.915 lb 415g / 0.915 lb

Average latency 4.16ms 4.16ms

Power-on to ready (max) <8.5s <8.5s

Standby to ready (max) <8.5s <8.5s

Track-to-track seek time (typical) <1.0ms read;

Average seek, read (typical) <8.5ms <8.5ms

Average seek, write (typical) <9.5ms <9.5ms

Startup current (typical) 12V (peak) 2.0A 2.0A

Voltage tolerance (including noise) 5V +10% / -7.5%

Ambient temperature 0° to 60°C (operating)

Temperature gradient 20°C per hour max (operating)

Relative humidity 5% to 95% (operating)

Relative humidity gr

Wet bulb temperature (max) 37.7°C (operating)

Altitude, operating –304.8m to 3,048m

Altitude, non-operating (below mean sea level, max)

Operational Shock (max) 70 Gs at 2ms 70 Gs at 2ms

Non-Operational Shock (max) 350 Gs at 2ms 350 Gs at 2ms

Vibration, operating 2Hz to 22Hz: 0.25 Gs, Limited displacement

Vibration, non-operating 5Hz to 22Hz: 3.0 Gs

Drive acoustics, sound power

Idle** 2.6 bels (typical)

Seek 2.8 bels (typical)

Non-recoverable read errors 1 per 10

Annulized Failure Rate (AFR) 0.34% 0.34%

er rate (max) 1695Mb/s 1695Mb/s

rate OD (max) 125MB/s 125MB/s

adient (max) 30% per hour 30% per hour

ST3500413AS ST3320413AS

Multiword DMA modes: 0 to 2 Ultra DMA modes: 0 to 6

+ 0.010 in) 101.6mm / 4.0 in (+ 0.010 in)

<1.2ms write

12V +10% / -7.5%

–40° to 70°C (non-operating)

30°C per hour max (no

n-operating)

5% to 95% (non-operating)

40.0°C (non-operating)

(–1000 ft to 10,000+ ft)

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

22Hz to 350Hz: 0.50 Gs 350Hz to 500Hz: 0.25 Gs

22Hz to 350Hz: 3.0 Gs 350Hz to 500Hz: 3.0 Gs

2.7 bels (max)

3.0 bels (max)

bits read 1 per 10

329Gb/in

PIO modes: 0 to 4 Multiword DMA modes: 0 to 2 Ultra DMA modes: 0 to 6

<1.0ms read; <1.2ms write

5V +10% / -7.5% 12V +10% / -7.5%

0° to 60°C (operating) –40° to 70°C (non-operating)

20°C per hour max (operating) 30°C per hour max (non-operating)

5% to 95% (operating) 5% to 95% (non-operating)

37.7°C (operating)

40.0°C (non-operating)

–304.8m to 3,048m (–1000 ft to 10,000+ ft)

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

2Hz to 22Hz: 0.25 Gs, Limited displacement 22Hz to 350Hz: 0.50 Gs 350Hz to 500Hz: 0.25 Gs

5Hz to 22Hz: 3.0 Gs 22Hz to 350Hz: 3.0 Gs 350Hz to 500Hz: 3.0 Gs

2.6 bels (typical)

2.7 bels (max)

2.8 bels (typical)

3.0 bels (max)

bits read

Barracuda SATA Product Manual, Rev. B 13

Drive Specifications www.seagate.com

Table 2 Drive specifications summary for 500GB and 320 models (continued)

Drive Specification

Warranty To determine the warranty for a specific drive, use a web browser to access the following web

Contact start-stop cycles 50,000 at 25°C, 50% rel. humidity 50,000 at 25°C, 50% rel. humidity

Supports Hotplug operation per the

rial ATA Revision 2.5 specification

*One GB 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

to operational levels.

ST3500413AS ST3320413AS

support.seagate.com/customer/warranty_validation.jsp

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 number) and country of purchase. The system will display the warranty information for your drive.

Ye s Ye s

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

Table 3 Drive specifications summary for 250GB and 160GB models

Drive Specification

Formatted capacity (512 bytes/sector)* 250GB 160GB

Guaranteed sectors 488,397,168 312,581,808

Heads 1 1

Disks 1 1

Bytes per sector 512 512

Default sectors per track 63 63

Default read/write heads 16 16

Default cylinders 16,383 16,383

Recording density (max.) 1413kb/in 1413kb/in

Track density (avg.) 236 ktracks/in 236 ktracks/in

Areal density (avg.) 329Gb/in

Spindle speed 7200 RPM 7200 RPM

Internal data transfer rate (max.) 1695Mb/s 1695Mb/s

Sustained data transfer

I/O data-transfer rate 600MB/s 600MB/s

ATA data-transfer modes supported PIO modes: 0 to 4

Cache buffer 8MB 8MB

Height (max.) 19.98mm / 0.787 in 19.98mm / 0.787 in

Width (max.) 101.6mm / 4.0 in (

Length (max.) 146.99mm / 5.787 in 146.99mm / 5.787 in

Weight (typical) 415g / 0.915 lb 415g / 0.915 lb

Average latency 4.16ms 4.16ms

Power-on to ready (max.) <8.5s <8.5s

Standby to ready (max.) <8.5s <8.5s

Track-to-track seek time (typical) <1.0ms (read)

Average seek, read (typical) Average seek, write (typical)

Startup current (typical) 12V (peak) 2.0A 2.0A

Voltage tolerance (including noise) 5V +10% / -7.5%

Ambient temperature 0° to 60°C (operating)

Temperature gradient (max.) 20°C per hour (operating)

rate OD (max.) 125MB/s 125MB/s

ST3250312AS ST3160316AS

Multiword DMA modes: 0 to 2 Ultra DMA modes: 0 to 6

+ 0.010 in) 101.6mm / 4.0 in ( + 0.010 in)

<1.2ms (write)

<8.5ms (read) <9.5ms (write)

12V +10% / -7.5%

–40° to 70°C (non-operating)

30°C per hour (non-operating)

329Gb/in

PIO modes: 0 to 4 Multiword DMA modes: 0 to 2 Ultra DMA modes: 0 to 6

<1.0ms (read) <1.2ms (write)

<8.5ms (read) <9.5ms (write)

5V +10% / -7.5% 12V +10% / -7.5%

0° to 60°C (operating) –40° to 70°C (non-operating)

20°C per hour (operating) 30°C per hour (non-operating)

14 Barracuda SATA Product Manual, Rev. B

www.seagate.com Drive Specifications

Table 3 Drive specifications summary for 250GB and 160GB models (continued)

Drive Specification

Relative humidity 5% to 95% (operating)

Relative humidity gradient (max.) 30% per hour 30% per hour

Wet bulb temperature 37.7°C max (operating)

Altitude, operating –60.96m to 3,048m

Altitude, non-operating (below mean sea level, max.)

Operational Shock (max.) 70 Gs at 2ms 70 Gs at 2ms

Non-Operational Shock (max.) 350 Gs at 2ms 350 Gs at 2ms

Vibration, operating 2Hz to 22Hz: 0.25 Gs,

Vibration, non-operating 5Hz to 22Hz: 3.0 Gs

Drive acoustics, sound power

Idle** 2.6 bels (typical)

Seek 2.8 bels (typical)

Non-recoverable read errors 1 per 10

Annulized Failure Rate (AFR) 0.34% 0.34%

Warranty To determine the warranty for a specific drive, use a web browser to access the following web

Contact start-stop cycles 50,000 at 25°C, 50% rel. humidity 50,000 at 25°C, 50% rel. humidity

Supports Hotplug operation per the

rial ATA Revision 2.5 specification

ST3250312AS ST3160316AS

5% to 95% (non-operating)

40.0°C max (non-operating)

(–1000 ft to 10,000+ ft)

–60.96m to 12,192m (–1000 ft to 40,000+ ft)

22Hz to 350Hz: 0.50 Gs 350Hz to 500Hz: 0.25 Gs

22Hz to 350Hz: 3.0 Gs 350Hz to 500Hz: 3.0 Gs

2.7 bels (max)

3.0 bels (max)

bits read 1 per 10

support.seagate.com/customer/warranty_validation.jsp

Ye s Ye s

Limited displacement

5% to 95% (operating) 5% to 95% (non-operating)

37.7°C max (operating)

40.0°C max (non-operating)

–60.96m to 3,048m (–1000 ft to 10,000+ ft)

–60.96m to 12,192m (–1000 ft to 40,000+ ft)

2Hz to 22Hz: 0.25 Gs, Limited displacement 22Hz to 350Hz: 0.50 Gs 350Hz to 500Hz: 0.25 Gs

5Hz to 22Hz: 3.0 Gs 22Hz to 350Hz: 3.0 Gs 350Hz to 500Hz: 3.0 Gs

2.6 bels (typical)

2.7 bels (max)

2.8 bels (typical)

3.0 bels (max)

bits read

*One GB 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 activity

to operational levels.

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

2.2 Formatted capacity

Model

Formatted capacity*

ST31000524AS 1000GB 1,953,525,168

ST3750525AS 750GB 1,465,149,168

ST3500413AS 500GB 976,773,168

ST3320413AS 320GB 625,142,448

ST3250312AS 250GB 488,397,168

ST3160316AS 160GB 312,581,808

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

formatting.

Guaranteed sectors

Bytes per sector

512

Barracuda SATA Product Manual, Rev. B 15

+ 33 hidden pages