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States and/or other countries. Enterprise NAS HDD v2 and SeaTools 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.
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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. Actual quantities will vary based on various factors, including file size, file format, features
and application software. Actual data rates may vary depending on operating environment and other factors. The
export or re-export of hardware or software containing encryption may be regulated by the U.S. Department of
Commerce, Bureau of Industry and Security (for more information, visit www.bis.doc.gov), and controlled for import
and use outside of the U.S. Seagate reserves the right to change, without notice, product offerings or specifications.
• Global Support Services telephone numbers & business hours
• Authorized Service Centers
For information regarding Warranty Support, visit:
For information regarding data recovery services, visit:
For Seagate OEM and Distribution partner portal, visit:
For Seagate reseller portal, visit:
• Balance technology to support multiple drives in a system
• Quiet acoustic performance
• Low activity and idle power
• Supports ATA8 streaming commands
• TGMR recording technology provides the drives with increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms
• Native Command Queuing with command ordering to increase performance in demanding applications
• Full-track multiple-sector transfer capability without local processor intervention
• 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
1.1About the SATA interface
The Serial ATA (SATA) 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, SA TA makes the transition from parallel ATA easy by providing legacy software support. SATA was designed to allow users
to install a SATA host adapter and SATA disk drive in the current system and expect all of the existing applications to work as normal.
The SATA interface connects each disk drive in a point-to-point configuration with the SATA host adapter. There is no master/slave
relationship with SATA devices like there is with parallel ATA. If two drives are attached on one SATA 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 SATA 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 SATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the
Shadow Register Block. All SATA devices behave like Device 0 devices. For additional information about how SATA emulates parallel
A TA, refer to the “Serial ATA International Organization: Serial ATA Revision 3.0”. The specification can be downloaded from www.sata-
io.org.
The host adapter may, optionally, emulate a master/slave environment to host software where two
Note
devices on separate SA TA 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 SATA environment.
Seagate Enterprise NAS HDD Product Manual, Rev. B5
www.seagate.comDrive Specifications
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:
From this page, click on “Check to see if the drive is under Warranty”. Users 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 the drive.
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
2.5 bels (typical)
2.6 bels (max)
2.6 bels (typical)
2.7 bels (max)
15
bits read
600,000 at 25°C, 50% rel. humidity
Yes
*All specifications above are based on native configurations.
** One GB equals one billion bytes and 1TB equals one trillion 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.
*One GB equals one billion bytes and 1TB equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
Guaranteed
sectors
Bytes per sector
4K
Seagate Enterprise NAS HDD Product Manual, Rev. B7
www.seagate.comDrive Specifications
2.2.1LBA 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 137GB.
2.3Default logical geometry
• Cylinders: 16,383
• Read/write heads: 16
• Sectors per track: 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.
2.4Recording and interface technology
InterfaceSATA
Recording methodTGMR
Recording density (kFCI)1941
Track density (ktracks/inch avg)340
Areal density (Gb/in2)642
Internal data transfer rate (Mb/s max)2347
Maximum sustained data transfer rate, OD read (MB/s) 216
Average data rate, read/write (MB/s)154
I/O data-transfer rate (MB/s max)600
2.5Physical characteristics
Maximum height 26.11mm / 1.028 in
Maximum width 101.6mm / 4.0 in (± 0.010 in)
Maximum length 146.99mm / 5.787 in
Typical weight
6TB780g / 1.72 lb
5TB700g / 1.54 lb
4TB
620g / 1.372 lb
3TB
2TB540g / 1.19 lb
Cache buffer128MB
Seagate Enterprise NAS HDD Product Manual, Rev. B8
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