NOTE: These HDD is refurbished /Recertified by HGST factory It's fully tested & passed HGST factory diagnose software test It works as good as hard drive with Zero bad sectors, Zero Power on Hours Since this is heavy duty enterprise HDD with a 25M-hour MTBF rating We are confidence that to honor another 5 Years for these hard drives Buy with confidence & worry ! Economics and Access Speed: Key Requirements for Low Capacity HDDs in the Data Center As the industry evolves to develop purpose-built solutions for growing data storage requirements, IT managers continue to rely on lower capacity drives that are economical to acquire, deliver quick and reliable data access for traditional data center applications Designed to handle workloads up to 550TB per year, Ultrastar DC HC320* is an 8TB1 HDD that helps address economic and access requirements of many traditional IT workloads Low capacity drives also help address architecture limitations Part of our mid-capacity DC HC300 series, the Ultrastar DC HC320 is designed for traditional storage and server applications as well as distributed and scalable computing, including block and file storage architectures, providing fast 7,200 RPM performance and lower acquisition cost to help ease budget constraints Ultrastar DC HC320 is offered with either 6Gb/s SATA interface in a 512e9 format Highlights Excellent random and sequential performance 8TB capacity point supports traditional IT systems Sustained transfer rate up to 255MB/s 6Gb/s SATA Advanced Format 512e9 models Self-Encrypting Drive options 5-year limited from Reseller Applications & Workloads Distributed file systems, like Apache Hadoop, to support Big Data analytics Direct & Network Attached Storage NAS (DAS & NAS) RAID arrays Servers Surveillance System