Seagate ST3400820NS, ST3320820NS, ST3400620NS, ST3750840NS, ST3500830NS User Manual

...

Product Manual

Barracuda ES Serial ATA

ST3750640NS

ST3500630NS

ST3400620NS

ST3250620NS

ST3320620NS

ST3750840NS

ST3500830NS

ST3400820NS

ST3250820NS

ST3320820NS

100424667 Rev. D September 2007

Revision history

Revision Date Sheets affected or comments

Rev. A 06/21/06 Initial release. Rev. B 10/19/06 All. Rev. C 08/09/07 Front cover, 20 & 25. Rev. D 09/06/07 31.

Publication number: 100424667, Rev. D September 2007

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.

One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Seagate reserves the right to change, with out 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 tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.4 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.5 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.8.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.8.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.9 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.9.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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

2.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) . . . 23

2.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.13.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.14 Environmental protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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

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

2.15 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

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

3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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

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

4.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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

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

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

5.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Barracuda ES Serial ATA Product Manual, Rev. D i

ii Barracuda ES Serial ATA Product Manual, Rev. D

List of Figures

Figure 1. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 2. Typical 12V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 3. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 4. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 5. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Barracuda ES Serial ATA Product Manual, Rev. D iii

1.0 Introduction

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

ST3750640NS ST3500630NS ST3400620NS ST3320620NS ST3250620NS

ST3750840NS ST3500830NS ST3400820NS ST3320820NS ST3250820NS

These drives provide the following key features:

• 7,200 RPM spindle speed.

• High instantaneous (burst) data-transfer rates (up to 300 Mbytes 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.

• 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.

ES Serial ATA model drives:

Barracuda ES Serial ATA Product Manual, Rev. D 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 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 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: High Speed Serialized AT Attachment” specification. The specification can be downloaded from www.serialata.org.

2 Barracuda ES Serial ATA Product Manual, Rev. D

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:

ST3750640NS ST3500630NS ST3400620NS ST3320620NS ST3250620NS

ST3750840NS ST3500830NS ST3400820NS ST3320820NS ST3250820NS

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.

Barracuda ES Serial ATA Product Manual, Rev. D 3

Table 1: Drive specifications summary for 750 Gbyte models

Drive specification ST3750640NS ST3750840NS

Formatted Gbytes (512 bytes/sector)* 750

Guaranteed sectors 1,465,149,168

Heads 8 8

Discs 4 4

Bytes per sector 512

Default sectors per track 63

Default read/write heads 16

Default cylinders 16,383

Recording density, KBPI (kbits/in max) 926

Track density, KTPI (ktracks/in avg.) 145

Areal density, (Gbits/in2 avg) 128.2

Spindle speed (RPM) 7,200

Internal data transfer rate (Mbits/sec max) 1,030

Sustained data transfer rate OD (Mbytes/sec max) 78

I/O data-transfer rate (Mbytes/sec max) 300

ATA data-transfer modes supported PIO modes 0–4

Cache buffer 16 Mbytes 8 Mbytes

Height (mm max) 26.1 mm (1.028 inches)

Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches

Length (mm max) 146.99 mm (5.787 inches)

Weight (max) 720 grams

Average latency 4.16 msec

Power-on to ready (sec max) 15 sec

Standby to ready (sec max) 15 sec

Track-to-track seek time (msec typical) <0.8 read; <1.0 write

Average seek, read (msec typical) <8.5

Average seek, write (msec typical) <10.0

Startup current (typical) 12V (peak) 2.8 amps

Voltage tolerance (including noise) 5V ± 5%

Ambient temperature 5° to 55°C (operating)

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

Relative humidity 5% to 90% (operating)

Relative humidity gradient 30% per hour max

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

Altitude, operating –60.96 m to 3,048 m

Altitude, nonoperating (below mean sea level, max)

Operational Shock (max at 2 msec) 63 Gs

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

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

12V ± 10%

–40° to 70°C (nonoperating)

30°C (nonoperating)

5% to 95% (nonoperating)

37.7 (nonoperating)

(–200 ft. to 10,000+ ft.)

–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

4 Barracuda ES Serial ATA Product Manual, Rev. D

Drive specification ST3750640NS ST3750840NS

Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement

Vibration, nonoperating 5–22 Hz: 0.25 Gs, Limited displacement

Drive acoustics, sound power (bels)

Idle** 2.7 (typical)

Performance seek 3.2 (typical)

Nonrecoverable read errors 1 sector per 10

Annualized Failure Rate (AFR) 0.73%

Warranty 5 years on distribution units.

Contact start-stop cycles (25°C, 50% rel. humidity)

Supports Hotplug operation per Serial ATA Revision 2.5 specification

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

22–350 Hz: 5.0 Gs 350–500 Hz: 1.0 Gs

3.0 (max)

3.9 (max)

bits read

To determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ 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.

50,000

Yes

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

power to operational levels.

Barracuda ES Serial ATA Product Manual, Rev. D 5

Table 2: Drive specifications summary for 500 Gbyte models

Drive specification ST3500630NS ST3500830NS

Formatted Gbytes (512 bytes/sector)* 500

Guaranteed sectors 976,773,168

Heads 6

Discs 3

Bytes per sector 512

Default sectors per track 63

Default read/write heads 16

Default cylinders 16,383

Recording density, KBPI (kbits/in max) 813

Track density, KTPI (ktracks/in avg.) 145

Areal density, (Gbits/in2 avg) 114 .4

Spindle speed (RPM) 7,200

Internal data transfer rate (Mbits/sec max) 1,030

Sustained data transfer rate OD (Mbytes/sec max) 72

I/O data-transfer rate (Mbytes/sec max) 300

ATA data-transfer modes supported PIO modes 0–4

Cache buffer 16 Mbytes 8 Mbytes

Height (mm max) 26.1 mm (1.028 inches)

Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches

Length (mm max) 146.99 mm (5.787 inches)

Weight (max) 635 grams

Average latency (msec) 4.16

Power-on to ready (sec max) 15 sec

Standby to ready (sec max) 15 sec

Track-to-track seek time (msec typical) <0.8 (read)

Average seek, read (msec typical) <8.5

Average seek, write (msec typical) <10.0

Startup current (typical) 12V (peak) 2.8 amps

Voltage tolerance (including noise) 5V ± 5%

Ambient temperature 5° to 55°C (operating)

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

Relative humidity 5% to 90% (operating)

Relative humidity gradient 30% per hour max

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

Altitude, operating –60.96 m to 3,048 m

Altitude, nonoperating (below mean sea level, max)

Operational Shock (max at 2 msec) 63 Gs

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

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

<1.0 (write)

12V ± 10%

–40° to 70°C (nonoperating)

30°C (nonoperating)

5% to 95% (nonoperating)

37.7 (nonoperating)

(–200 ft. to 10,000+ ft.)

–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

6 Barracuda ES Serial ATA Product Manual, Rev. D

Drive specification ST3500630NS ST3500830NS

Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement

Vibration, nonoperating 5–22 Hz: 0.25 Gs, Limited displacement

Drive acoustics, sound power (bels)

Idle** 2.5 (typical)

Performance seek 3.2 (typical)

Nonrecoverable read errors 1 sector per 10

Annualized Failure Rate (AFR) 0.73%

Warranty 5 years on distribution units.

Contact start-stop cycles (25°C, 50% rel. humidity)

Supports Hotplug operation per SATA II specification

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

power to operational levels.

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

22–350 Hz: 5.0 Gs 350–500 Hz: 1.0 Gs

2.8 (max)

3.5 (max)

bits read

50,000

Yes

Barracuda ES Serial ATA Product Manual, Rev. D 7

Table 3: Drive specifications summary for 400 Gbyte models

Drive specification ST3400620NS ST3400820NS

Formatted Gbytes (512 bytes/sector)* 400

Guaranteed sectors 781,422,768

Heads 5

Discs 3

Bytes per sector 512

Default sectors per track 63

Default read/write heads 16

Default cylinders 16,383

Recording density, KBPI (kbits/in max) 781

Track density, KTPI (ktracks/in avg.) 145

Areal density, (Gbits/in2 avg) 128.2

Spindle speed (RPM) 7,200

Internal data transfer rate (Mbits/sec max) 1,030

Sustained data transfer rate OD (Mbytes/sec max) 72

I/O data-transfer rate (Mbytes/sec max) 300

ATA data-transfer modes supported PIO modes 0–4

Cache buffer 16 Mbytes 8 Mbytes

Height (mm max) 26.1 mm (1.028 inches)

Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches

Length (mm max) 146.99 mm (5.787 inches)

Weight (max) 635 grams

Average latency (msec) 4.16

Power-on to ready (sec max) 15 sec

Standby to ready (sec max) 15 sec

Track-to-track seek time (msec typical) <0.8 (read)

Average seek, read (msec typical) <8.5

Average seek, write (msec typical) <10.0

Startup current (typical) 12V (peak) 2.8 amps

Voltage tolerance (including noise) 5V ± 5%

Ambient temperature 5° to 55°C (operating)

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

Relative humidity 5% to 90% (operating)

Relative humidity gradient 30% per hour max

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

Altitude, operating –60.96 m to 3,048 m

Altitude, nonoperating (below mean sea level, max)

Operational Shock (max at 2 msec) 63 Gs

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

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

<1.0 (write)

12V ± 10%

–40° to 70°C (nonoperating)

30°C (nonoperating)

5% to 95% (nonoperating)

37.7 (nonoperating)

(–200 ft. to 10,000+ ft.)

–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

8 Barracuda ES Serial ATA Product Manual, Rev. D

Drive specification ST3400620NS ST3400820NS

Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement

Vibration, nonoperating 5–22 Hz: 0.25 Gs, Limited displacement

Drive acoustics, sound power (bels)

Idle** 2.5 (typical)

Performance seek 3.2 (typical)

Nonrecoverable read errors 1 sector per 10

Annualized Failure Rate (AFR) 0.73%

Warranty 5 years on distribution units.

Contact start-stop cycles (25°C, 50% rel. humidity)

Supports Hotplug operation per SATA II specification

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

22–350 Hz: 5.0 Gs 350–500 Hz: 1.0 Gs

2.8 (max)

3.5 (max)

bits read

50,000

Ye s

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

power to operational levels.

Barracuda ES Serial ATA Product Manual, Rev. D 9

Table 4: Drive specifications summary for 320 Gbyte models

Drive specification ST3320620NS ST3320820NS

Formatted Gbytes (512 bytes/sector)* 320

Guaranteed sectors 625,142,448

Heads 4

Discs 2

Bytes per sector 512

Default sectors per track 63

Default read/write heads 16

Default cylinders 16,383

Recording density, KBPI (kbits/in max) 781

Track density, KTPI (ktracks/in avg.) 145

Areal density, (Gbits/in2 avg) 114.4

Spindle speed (RPM) 7,200

Internal data transfer rate (Mbits/sec max) 1,030

Sustained data transfer rate OD (Mbytes/sec max) 72

I/O data-transfer rate (Mbytes/sec max) 300

ATA data-transfer modes supported PIO modes 0–4

Cache buffer 16 Mbytes 8 Mbytes

Height (mm max) 26.1 mm (1.028 inches)

Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches

Length (mm max) 146.99 mm (5.787 inches)

Weight (max) 635 grams

Average latency (msec) 4.16

Power-on to ready (sec max) 15 sec

Standby to ready (sec max) 15 sec

Track-to-track seek time (msec typical) <0.8 (read)

Average seek, read (msec typical) <8.5

Average seek, write (msec typical) <10.0

Startup current (typical) 12V (peak) 2.8 amps

Voltage tolerance (including noise) 5V ± 5%

Ambient temperature 5° to 55°C (operating)

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

Relative humidity 5% to 90% (operating)

Relative humidity gradient 30% per hour max

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

Altitude, operating –60.96 m to 3,048 m

Altitude, nonoperating (below mean sea level, max)

Operational Shock (max at 2 msec) 63 Gs

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

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

<1.0 (write)

12V ± 10%

–40° to 70°C (nonoperating)

30°C (nonoperating)

5% to 95% (nonoperating)

37.7 (nonoperating)

(–200 ft. to 10,000+ ft.)

–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

10 Barracuda ES Serial ATA Product Manual, Rev. D

Drive specification ST3320620NS ST3320820NS

Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement

Vibration, nonoperating 5–22 Hz: 0.25 Gs, Limited displacement

Drive acoustics, sound power (bels)

Idle** 2.5 (typical)

Performance seek 3.2 (typical)

Nonrecoverable read errors 1 sector per 10

Annualized Failure Rate (AFR) 0.73%

Warranty 5 years on distribution units.

Contact start-stop cycles (25°C, 50% rel. humidity)

Supports Hotplug operation per SATA II specification

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

22–350 Hz: 5.0 Gs 350–500 Hz: 1.0 Gs

2.8 (max)

3.5 (max)

bits read

50,000

Ye s

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

power to operational levels.

Barracuda ES Serial ATA Product Manual, Rev. D 11

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