Western Digital Red Pro internal hard drive 6 TB 7200 RPM 256 MB 3.5" Serial ATA

24/7 operation: Yes Interface: Serial ATA HDD speed: 7200 RPM HDD capacity: 6 TB Storage drive buffer size: 256 MB Type: HDD Mean time between failures (MTBF): 2500000 h Component for: NAS HDD size: 3.5" Storage temperature (T-T): -40 - 70 °C Operating temperature (T-T): 0 - 65 °C Depth: 147 mm Height: 26.1 mm Weight: 670 g Width: 101.6 mm Quantity per pack: 1 pc(s) Warnings: Do not open or disassemble.