WD Western Digital Ultrastar DC HC520 (HUH721212AL5204) SAS Enterprise HDD 7200 RPM, 12 TB

Enterprise-class storage to rely on: Ultrastar is the top-end drive for data centres; with up to 2.5 million hours MTBF, Ultrastar drives deliver reliability and durability within the most demanding storage environments

All backed with a 5-year limited warranty

High workload rating: Ultrastar hard drives are designed with a workload rating up to 550 TB per year* - among the highest of any 3.5 Inch hard drive

Workload rate is defined as the amount of user data transferred to or from the hard drive and will vary depending on your hardware and software components and configurations

HelioSeal technology: Featured in over 30 million Western Digital hard drives shipped*, HelioSeal technology allows for higher capacities and lower power on large storage arrays; * as of July 2018

HelioSeal technology is field-tested and proven to deliver high capacity, reliability and power efficiency you can trust; available on 10 TB capacities and above

Compatibility testing: All Ultrastar hard drives are extensively tested across a variety of popular OEM storage systems, SAS controllers and host bus adapters to ensure ease of integration for a plug and play solution

7200RPM-class: This family of 7200RPM-class hard drives delivers the fast performance with the high workload rating of any drive in Western Digital's hard drive lineup