seagate BARRACUDA ES.2 Product Manual
Product Manual
Barracuda ES.2 Serial ATA
ST31000340NS
ST3750330NS
ST3500320NS
ST3250310NS
100468393
Rev. H
September 2009
Revision history
Revision Date Sheets affected or comments
Rev. A 08/10/07 Initial release
Rev. B 09/06/07 27.
Rev. C 11/12/07 5, 7, 9-11 & 16.
Rev. D 12/10 /07 4, 6 and 9.
Rev. E 01/18/08 4, 6, and 10.
Rev. F 06/27/08 1, 16, 25-26 and 28-30.
Rev. G 08/17/09 21.
Rev. H 09/15/09 26. Corrected Write DMA FUA Extended command.
Copyright © 2007-2009 Seagate Technology LLC. All rights reserved. Printed in U.S.A.
Publication number: 100468393, Rev. H September 2009
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 othe r trademarks or register ed trademarks are the p roperty of their respectiv e
owners.
When referring to hard 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 measure
ment and report a lower capacity. In addition, some of the listed capacity is used for formatti ng and other
functions, and thus will not be available for data storage. Seagate reserves the right to change, without
notice, product offerings or specifications.
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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8.3 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.4 Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.5 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) . . . 16
2.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.13.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.14 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive. . . . . 18
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . . 18
2.15 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.0 Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.3.3 S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Barracuda ES.2 Serial ATA Product Manual, Rev. H i
ii Barracuda ES.2 Serial ATA Product Manual, Rev. H
List of Figures
Figure 1. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 2. Typical 12V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 3. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 4. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 5. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Barracuda ES.2 Serial ATA Product Manual, Rev. H iii
1.0 Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate
Barracuda
ST31000340NS ST3750330NS ST3500320NS ST3250310NS
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.
• Worldwide Name (WWN) capability uniquely identifies the drive.
®
ES.2 Serial ATA model drives:
Barracuda ES.2 Serial ATA Product Manual, Rev. H 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 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 www.serialata.org.
2 Barracuda ES.2 Serial ATA Product Manual, Rev. H
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:
ST31000340NS ST3750330NS ST3500320NS ST3250310NS
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.2 Serial ATA Product Manual, Rev. H 3
Table 1: Drive specifications summary for 1000 GB (1 Tbyte) and 750 GB models
Drive specification ST31000340NS ST3750330NS
Formatted Gbytes (512 bytes/sector)* 1000 750
Guaranteed sectors 1,953,525,168 1,465,149,168
Heads 8 6
Discs 4 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) 1,090
Track density, KTPI (ktracks/in avg.) 150
Areal density, (Gbits/in2 avg) 164
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 1287
Sustained data transfer rate OD (Mbytes/sec max) 105
I/O data-transfer rate (Mbytes/sec max) 300
ATA data-transfer modes supported PIO modes 0–4
Cache buffer 32 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) 677 grams (1.493 lbs) 633 grams (1.396 lbs)
Average latency 4.16 msec
Power-on to ready (sec max) 20 sec
Standby to ready (sec max) 10 sec 9 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) 9.5
Startup current (typical) 12V (peak) 3.0 amps
Voltage tolerance (including noise) 5V + 10% / -7.5%
Ambient temperature 5° to 55°C (operating)
Temperature gradient (°C per hour max) 20°C (operating)
Relative humidity 5% to 95% (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) 70 Gs
Non-Operational Shock (max at 2 msec) 300 Gs
Multiword DMA modes 0–2
Ultra DMA modes 0–6
12V + 10% / -7.5%
–40° to 70°C (nonoperating)
30°C (nonoperating)
5% to 95% (nonoperating)
40.0 (nonoperating)
(–200 ft. to 10,000+ ft.)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
4 Barracuda ES.2 Serial ATA Product Manual, Rev. H
Drive specification ST31000340NS ST3750330NS
Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement
Vibration, nonoperating 5–22 Hz: 2.0 Gs, Limited displacement
Drive acoustics, sound power (bels)
Active 3.25 (typical)
Idle** 2.9 (typical)
Performance seek 3.2 (typical)
Quiet seek 3.1 (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: 2.0 Gs
3.4 (max)
3.1 (max)
3.3 (max)
3.2 (max)
15
bits read
To determine the warranty for a specific drive, use a web browser to access
the following web page:
From this page, click on the “Verify Your Warranty” link. You will be asked to
provide the drive serial number, model number (or part number) and country
of purchase. The system will display the warranty information for your drive.
50,000
Yes
www.seagate.com/support/service/
*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 a ctivity may occur according to the S.M.A.R.T. specification, which may incr ease acoustic and
power to operational levels.
Barracuda ES.2 Serial ATA Product Manual, Rev. H 5
Table 2: Drive specifications summary for 500 GB and 250 GB models
Drive specification ST3500320NS ST3250310NS
Formatted Gbytes (512 bytes/sector)* 500 250
Guaranteed sectors 976,773,168 488,397,168
Heads 4 2
Discs 2 1
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 1,090
Track density, KTPI (ktracks/in avg.) 150
Areal density, (Gbits/in2 avg) 164
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 1287
Sustained data transfer rate OD (Mbytes/sec max) 105
I/O data-transfer rate (Mbytes/sec max) 300
ATA data-transfer modes supported PIO modes 0–4
Cache buffer 32 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) 543 grams (1.199 lbs) 518 grams (1.141 lbs)
Average latency 4.16 msec
Power-on to ready (sec max) 20 sec
Standby to ready (sec max) 8 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) 9.5
Startup current (typical) 12V (peak) 3.0 amps
Voltage tolerance (including noise) 5V + 10% / -7.5%
Ambient temperature 5° to 55°C (operating)
Temperature gradient (°C per hour max) 20°C (operating)
Relative humidity 5% to 95% (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) 70 Gs
Non-Operational Shock (max at 2 msec) 300 Gs
Multiword DMA modes 0–2
Ultra DMA modes 0–6
12V + 10% / -7.5%
–40° to 70°C (nonoperating)
30°C (nonoperating)
5% to 95% (nonoperating)
40.0 (nonoperating)
(–200 ft. to 10,000+ ft.)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
6 Barracuda ES.2 Serial ATA Product Manual, Rev. H
Drive specification ST3500320NS ST3250310NS
Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement
Vibration, nonoperating 5–22 Hz: 2.0 Gs, Limited displacement
Drive acoustics, sound power (bels)
Active 3.25 (typical)
Idle** 2.7 (typical)
Performance seek 3.1 (typical)
Quiet seek 3.0 (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: 2.0 Gs
3.4 (max)
2.9 (max)
3.2 (max)
3.1 (max)
15
bits read
To determine the warranty for a specific drive, use a web browser to
access the following web page:
From this page, click on the “Verify Y our W arranty” 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
www.seagate.com/support/service/
*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 a ctivity may occur according to the S.M.A.R.T. specification, which may incr ease acoustic and
power to operational levels.
Barracuda ES.2 Serial ATA Product Manual, Rev. H 7
2.2 Formatted capacity
Model
ST31000340NS 1000 Gbytes 1,953,525,168
ST3750330NS 750 Gbytes 1,465,149,168
ST3500320NS 500 Gbytes 976,773,168
ST3250310NS 250 Gbytes 488,397,168
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
Formatted
capacity*
Guaranteed
sectors
Bytes per sector
512
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 Recording and interface technology
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density , KBPI (kbit
Track density, KTPI (ktracks/inch avg) 150
Areal density (Gbits/inch2 avg) 164
Spindle speed (RPM) (± 0.2%) 7,200
Internal data transfer rate (Mbits/sec max) 1287
Sustained data transfer rate (Mbytes/sec max) 105
I/O data-transfer rate (Mbytes/sec max) 300 (Ultra DMA mode 5)
s/inch max) 1,090
1000GB 750GB 500GB 250GB
8 Barracuda ES.2 Serial ATA Product Manual, Rev. H
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