Publication number: 100507013, Rev. C, August 2008
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 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 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
Barracuda 7200.11 Serial ATA Product Manual, Rev. Ciii
1.0Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate
Barracuda
ST31500341ASST31000333ASST3640323ASST3640623AS
ST3320613ASST3320813ASST3160813AS
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, Tunneling Magnetoresistive (TMR) recording heads and EPRML technology, for
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.
®
7200.11 Serial ATA model drives:
Barracuda 7200.11 Serial ATA Product Manual, Rev. C1
1.1About 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 International
Organization: Serial ATA Revision 2.6”. The specification can be downloaded from www.sata-io.org.
2Barracuda 7200.11 Serial ATA Product Manual, Rev. C
2.0Drive 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:
ST31500341ASST31000333ASST3640323ASST3640623AS
ST3320613ASST3320813ASST3160813AS
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 7200.11 Serial ATA Product Manual, Rev. C3
Table 1: Drive specifications summary for 1500 and 1000 Gbyte models
Contact start-stop cycles50,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
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
2.8 bels (max)
3.2 bels (max)
2.9 bels (max)
14
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.
Yes
www.seagate.com/support/service/
2.5 bels (typical)
2.7 bels (max)
2.9 bels (typical)
3.1 bels (max)
*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 7200.11 Serial ATA Product Manual, Rev. C5
Table 2: Drive specifications summary for 640 Gbyte models
Drive specificationST3640323ASST3640623AS
Formatted capacity (512 bytes/sector)*640 Gbytes
Guaranteed sectors1,250,263,728
Heads4
Discs2
Bytes per sector512
Default sectors per track63
Default read/write heads16
Default cylinders16,383
Recording density1250 kbits/in max
Track density190 ktracks/in avg
Areal density219 Gbits/in2 avg
Spindle speed7,200 RPM
Internal data transfer rate1460 Mbits/sec max
Sustained data transfer rate OD115 Mbytes/sec max
I/O data-transfer rate300 Mbytes/sec max
ATA data-transfer modes supportedPIO modes 0–4
Cache buffer32 Mbytes16 Mbytes
Height (max)26.1 mm (1.028 inches)
Width (max)101.6 mm (4.000 inches) +/- 0.010 inches
Length (max)146.99 mm (5.787 inches)
Weight (typical)543 grams (1.199 lb.)
Average latency4.16 msec
Power-on to ready20 sec max
Standby to ready14 sec max
Track-to-track seek time<0.8 msec typical read;
Average seek, read<8.5 msec typical
Average seek, write<10.0 msec typical
Startup current (typical) 12V (peak)2.8 amps
Voltage tolerance (including noise)5V +10% / -7.5%
Ambient temperature0° to 60°C (operating)
Temperature gradient20°C per hour max (operating)
Relative humidity5% to 95% (operating)
Relative humidity gradient30% per hour max
Wet bulb temperature37.7°C max (operating)
Altitude, operating–60.96 m to 3,048 m
Altitude, nonoperating
(below mean sea level, max)
Operational Shock70 Gs max at 2 msec
Non-Operational Shock300 Gs max at 2 msec
Multiword DMA modes 0–2
Ultra DMA modes 0–6
<1.0 msec typical write
12V +10% / -7.5%
–40° to 70°C (nonoperating)
30°C per hour max (nonoperating)
5% to 95% (nonoperating)
40.0°C max (nonoperating)
(–200 ft. to 10,000+ ft.)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
6Barracuda 7200.11 Serial ATA Product Manual, Rev. C
Contact start-stop cycles50,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
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
2.8 bels (max)
3.2 bels (max)
2.9 bels (max)
14
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.
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 activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
Barracuda 7200.11 Serial ATA Product Manual, Rev. C7
Table 3: Drive specifications summary for 320 and 160 Gbyte models
Contact start-stop cycles50,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
Serial ATA Revision 2.5 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:: 2.0 Gs
2.5 bels (max)
2.8 bels (max)
14
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.
Yes
www.seagate.com/support/service/
Barracuda 7200.11 Serial ATA Product Manual, Rev. C9
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