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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 othe r 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
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Seagate BarraCuda Product Manual, Rev. H 5
1.0Introduction
This manual describes the functional, mechanical and interface specifications for the following
Seagate® BarraCuda® model drives:
ST2000DM008
These drives provide the following key features:
• Compliant with RoHS requirements in China and Europe.
• High instantaneous (burst) data-transfer rates (up to 600MB per second).
• Native Command Queuing with command ordering to increase performance in demanding applications.
•Quiet operation.
•SeaTools
• State-of-the-art cache and on-the-fly error-correction algorithms.
• 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, SATA 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
ATA, refer to the “Serial ATA International Organization: Serial ATA Revision 3.0”. The specification can be downloaded from
www.sata-io.or
TM
diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
g.
The host adapter may, optionally, emulate a master/slave environment to host software where two
Note
Seagate BarraCuda Product Manual, Rev. H6
devices on separate SATA 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.
www.seagate.com
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:
ST2000DM008
2.1Specification summary tables
The specifications listed in Table 1 are for quick reference. For details on specification measurement or definition, refer to the
appropriate section of this manual.
Average annualized workload rating: <55 TB/year.
The specifications for the product assumes the I/O workload does not exceed the
Rated workload
average annualized workload rate limit of 55 TB/year. Workloads exceeding the
annualized rate may degrade and impact reliability as experienced by the particular
application. The average annualized workload rate limit is in units of TB per calendar
year.
To determine the warranty for a specific drive, use a web browser to access the
following web page: http://www.seagate.com/support/warranty-and-replacements/
Warranty
From this page, click on “Is my Drive 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.
Load/unload cycles600,000 at 25°C, 50% rel. humidity
Supports hotplug operation per the
Serial ATA Revision 3.2 specification
Ye s
*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.
†Seagate does not recommend operating at sustained case temperatures above 60°C.
Operating at higher temperatures will reduce useful life of the product.
Note
If the drive is powered-off before issuing flush cache command, in some instances,
the end user data in the DRAM cache might not be committed to the disk.
Seagate BarraCuda Product Manual, Rev. H8
www.seagate.com
2.2Formatted capacity
ModelFormatted capacity*Guaranteed sectors Bytes per sector
2TB2000GB3,907,029,1684096
*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.
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 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 (kBPI)2200
Track density (ktracks/inch avg)540
Areal density (Gb/in
Spindle speed (RPM)7200
Interface transfer rate (MB/s) 600
Data transfer rate (MB/s) up to 220
2
)1188
2.5Physical characteristics
Maximum height 20.20mm / 0.795 in
Maximum width 101.6mm / 4.0 in (± 0.010 in)
Maximum length 146.99mm / 5.787 in
Typical weight490g / 1.08 lb
Cache buffer256MB
Seagate BarraCuda Product Manual, Rev. H9
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