Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC
in the United States and/or other countries. PipelineHD Series, SeaTools and SeaTDD are either trade
marks 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.
This manual describes the functional, mechanical and interface specifications for the following Seagate
PipelineHD
TM
Series model drive:
ST3500321CSST3320310CSST3160310CS
These drives provide the following key features:
• 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.
PipelineHD Series SATA Product Manual, Rev. A1
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.
2PipelineHD Series SATA Product Manual, Rev. A
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 model:
ST3500321CSST3320310CSST3160310CS
2.1Specification 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.
PipelineHD Series SATA Product Manual, Rev. A3
Table 1: Drive specifications summary for 500, 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
350–500 Hz:: 1.0 Gs
2.3 bels (max)
2.5 bels (max)
14
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 dis
play the warranty information for your drive.
Yes
1.9 bels (typical)
2.1 bels (max)
2.3 bels (typical)
2.4 bels (max)
-
PipelineHD Series SATA Product Manual, Rev. A5
2.2Formatted capacity
Model
ST3500321CS500 Gbytes976,773,168512
ST3320310CS320 Gbytes625,142,448512
ST3160310CS160 Gbytes312,581,808512
*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
2.2.1LBA mode
When addressing the drive in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where
n isthe 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 48bit addressing support of drives with capacities over 137 Gbytes.
2.3Default logical geometry
CylindersRead/write headsSectors per track
16,3831663
LBA mode
When addressing the drive in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where
n isthe number of guaranteed sectors as defined above.
2.4Recording and interface technology
500 GB models320 and 160 GB model
InterfaceSerial ATA (SATA)
Recording methodPerpendicular
Recording density (kbits/inch max)1,020 kbits/in max1,242 kbits/in max
Track density (ktracks/inch avg)173 ktracks/in avg
Areal density (Gbits/inch2 avg)176 Gbits/in2 avg215 Gbits/in2 avg
Internal data transfer rate (Mbits/sec max)980 Mbits/sec max1,201 Mbits/sec max
Sustained data transfer rate (Mbytes/sec max)90
I/O data-transfer rate (Mbytes/sec max)300
6PipelineHD Series SATA Product Manual, Rev. A
2.5Physical characteristics
500GB model320GB model160GB model
Maximum height26.1 mm (1.028 inches)20.20 mm (0.794 inches)
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using
drive diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between
random tracks, less overhead.
Typical seek times (msec)Read Write
Track-to-track<1.0<1.2
Average<14.0<15.0
*Measured in performance mode.
**Measured in quiet mode.
Note.These drives are designed to consistently meet the seek times represented in this manual. Physical
seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted
values. However, due to the manner in which these drives are formatted, benchmark tests that
include command overhead or measure logical seeks may produce results that vary from these
specifications.
2.7Start/stop times
Power-on to Ready (sec)16 (max)
Standby to Ready (sec)16 (max)
Ready to spindle stop (sec)20 (max)
PipelineHD Series SATA Product Manual, Rev. A7
2.8Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 3 on page 18.
2.8.1Power consumption
Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on
an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient
temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating
speed.
• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in
a random track location.
• Operating (CE seek profile)
Operating power is measured by simulating a typical PVR operating environment, using a 50% write 50%
read algorithm.
• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/
write electronics are in power-down mode.
Table 2: DC power requirements
500GB Power dissipationAvg (watts 25° C)Avg 5V typ ampsAvg 12V typ amps
Spinup——2.0 (peak)
Idle*4.280.1660.233
Operating5.0260.3530.248
Standby0.7280.0880.020
Sleep0.7260.0870.020
*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.
320GB and 160GB Power dissipationAvg (watts 25° C)Avg 5V typ ampsAvg 12V typ amps
Spinup——<2.0 (peak)
Idle*3.030.1740.13
Operating4.7110.3110.166
Standby0.5770.0670.014
Sleep0.5740.0660.014
*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.
8PipelineHD Series SATA Product Manual, Rev. A
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