Western Digital 12TB Ultrastar DC HC520 7200RPM 3.5in SATA Enterprise Hard Drive (0F30146)

• 12TB capacity¹ in a standard 3.5-inch form factor

• PMR technology works with all capacity enterprise applications & environments

• Reliable, field-proven, 4th generation design

• Outstanding power efficiency (Watts/TB)

• Compared to 8TB Ultrastar air drives

  —50% more capacity

  —52% more power efficient (Watts/TB)

  —25% more reliable (MTBF)

• SATA 6Gb/s and SAS 12Gb/s

  —12Gb/s SAS compatible with next-gen data centers; backwards compatible with 6Gb/s SAS

• 2.5M hours MTBF2 rating & 5-year limited warranty

• Instant Secure Erase (ISE) & Self-Encrypting Drive (SED) options

• Advanced Format 4Kn and 512e models

Specifications 

For full datasheet click here.

1 One megabyte (MB) is equal to one million bytes, one gigabyte (GB) is equal to 1,000MB (one billion

bytes), and one terabyte (TB) is equal to 1,000GB (one trillion bytes) when referring to storage capacity. Accessible capacity will vary from the stated capacity due to formatting, system software, and other factors.

2 MTBF and AFR specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions for this drive model. MTBF and AFR ratings do not predict an individual drive’s reliability and do not constitute a warranty.

3 Advanced Format drive: 4K (4096-byte) physical sectors

4 Portion of buffer capacity used for drive firmware

5 MiB/s is 220 bytes, MB/s is 106 bytes

6 Excludes command overhead

7 SATA models: 8K Queue Depth = 1 @ 40 IOPS, SAS models: 4K Queue Depth = 4 @ Max IOPS

8 Idle specification is based on use of Idle_A