Manufacturer: WESTERN DIGITAL
Single Pack version of WD Gold hard drives feature up to ten times the workload rating of desktop drives and employ advanced technologies for enterprise-class reliability, power efficiency and performance. Designed from the ground up to be an ultra-robust storage device, WD Gold drives are the perfect solution for your business.
|512 emulation model number3||WD121KRYZ|
|Logical/Physical bytes per sector||512 / 4096|
|512n /512e user sectors per drive||23,437,770,752|
|Interface4||SATA 6 Gb/s|
|Native Command Queuing||Yes|
|Data transfer rate (max)4
Buffer to host
Host to/from drive (sustained)
|Performance Class||7200 RPM Class|
|Load /unload cycles6||600,000|
|Non-recoverable read errors per bits read||<1 in 1015|
|MTBF (hours)||2,500,000 7|
|AFR (%)||0.35 7|
|Limited warranty (years)8||5|
|Average power requirements (W)
|Environmental Specifications 9|
5 to 60
-40 to 70
Operating (half-sine wave, 2 ms)
Non-operating (half-sine wave)
|Acoustics (dBA) 10
|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%)||1.46/0.66|
|1 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.
2 As of April 2017. 3 Not all products may be available in all regions of the world.
4 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.
5 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.
6 Controlled unload at ambient condition.
7 Product MTBF and AFR specifications are based upon a 40°C base casting temperature and typical system workload rate of 219TB/year. Product is designed for workload rates up to 550TB/year.
8 See http://support.wd.com/warranty for regional specific warranty details.
9 No non-recoverable errors during operating tests or after non-operating tests.
10 Sound power level.