|Interface2||SATA 6 Gb/s|
|Native command queuing||Yes|
|Interface transfer rate (max)2
Buffer to host
Host to/from drive (sustained)
|Performance Class||7200 RPM Class|
|Non-recoverable read errors per bits read||<10 in 1015|
|MTBF (hours) for 8-16 bay NAS5||1,000,000|
|Workload Rate (TB/yr) 10||300|
|Limited warranty (years)6||5|
|12VDC-/+10% (A, peak)||1,9|
|Average power requirements (W)
5 to 60
-40 to 70
Operating (2 ms, read/write)
Operating (2 ms, read)
Non-operating (2 ms)
|Height (in./mm, max)||1.028/26.1|
|Length (in./mm, max)||5.787/147|
|Width (in./mm, ± .01 in.)||4/101.6|
|Weight (lb/kg, ± 10%)||1.58/0.72|
|1 Not all products may be available in all regions of the world.
2 As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 6 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization as of the date of this specification sheet. Visit www.sata-io.org for details.
3 WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
4 Controlled unload at ambient condition.
5 Product MTBF specifications are based upon a 40°C base casting temperature and typical system workload of 300TB/year. Workload is defined as the amount of user data transferred to or from the hard drive.
6 See http://support.wd.com/warranty for regional specific warranty details.
7 No non-recoverable errors during operating tests or after non-operating tests.
8 On the base casting.
9 Sound power level.
10 Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred X (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.