[ G01-1549-CR-5YR ] HGST Ultrastar HC520 HUH721212ALE601 12TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5" Helium Datacenter Hard Drive (Certified Refurbished) - 3 Year Warranty NOTE: These HDD is used by Datacenter Servers for about 5 years period.HDD was refurbished and data wiped with DoD Standard.It's fully tested & passed HGST factory diagnose software test with ZERO Bad sectors!Since this is a heavy duty enterprise HDD with 2.5M-hour MTBF rating.We are confidence that to honor another 5 Years Warranty from these hard drives!Buy with confidence & Worry Free! HGST Ultrastar HC520 12TB HARD DRIVE -HUH721212ALE601 delivers the world’s first hermetically sealed, helium hard drive, the Ultrastar® He10 for massive scale-out environments. Why does helium make a diference? Helium has only one-seventh the density of air. Replacing air with helium inside a hard drive dramatically reduces the turbulence caused by the spinning disks, cuts power consumption and results in a lower temperature within the disk drive.The reduction in turbulence for the spinning disk allows WD / HGST to deliver a seven-disk design in a traditional 3.5-inch form factor. In addition to being the world’s first helium-filled hard drive, HGST Ultrastar He6 is also the first hard drive in the industry to o er a 14-terabyte capacity. This design provides a 50% capacity gain and still reduces the energy needed to run the drive by up to 23%. Key Advantages/Highlights World’s first helium-filled hard drive Industry-first 12TB capacity in a standard 3.5-inch form factor HelioSeal® process and 7StacTM design are keys to hermetically sealed drive with higher capacity TCOptimized design delivers on key elements of data center TCO: capacity, power, cooling and storage density SAS & SATA 6Gb/s models for configuration flexibility Self-Encrypting Drive (SED) options for HDD-level data security Applications/Environments High-density data centers Massive scale-out data centers Containerized data centers Nearline storage applications Bulkstorage Enterprise and data center applications where density and capacity are paramountFeatures: Capacity: 12TB (12000GB) Buffer: 256 MB Cache Rotation Speed: 7200RPM Interface: SATA 6.0Gb/s Built on award-winning proven design Enterprise Grade 3.5" Hard Drive