WD 12TB 3.5", 7200rpm, 256MB, Ultrastar DC HC520, HUH721212ALE600

shape factor
3.5"
Speed
7200rpm
cache
256MB
Power consumption
7.2W (operation), 5.3W (idle)
Volume
36dB(A) (operation), 20dB(A) (idle)
Recording process
Conventional magnetic Recording (CMR)
Sectors
4KB with emulation (512e)
Reliability prediction
2.5 Mio. hours (MTBF)
Data protection features
Instant Secure Erase (ISE)
Special features
suitable for continuous operation, helium-filled
Warranty
five years
Note
Not labelled OEM/system builder-hard drives in circulation. Reduced warranty possible. warranty via the serial number checkable.
Trivia
The hard drive division of HGST/Hitachi was taken over by Western Digital WDC in 2012. In the year 2018 the most Ultrastar models were visually redesigned with Western Digital Corporate-Design. Technical data and product numbers remained unchanged.
Important
For use within a RAID array, do not combine hard drives with different recording methods (CMR, SMR). When using hard disks with SMR in a RAID array, make sure that the RAID controller (or NAS system) is compatible with SMR hard disks so that the partially blocked recording behavior with SMR is not mistakenly interpreted as a "hardware defect".