Western Digital Ultrastar DC HC555 internal hard drive 20 TB 7200 RPM 512 MB 3.5" SAS3

Mean time between failures (MTBF): 2500000 h HDD capacity: 20 TB HDD size: 3.5" Start/stop cycles: 600000 Storage drive buffer size: 512 MB Average latency: 4.16 ms 24/7 operation: Yes Interface: SAS3 HDD speed: 7200 RPM Hot-swap: No HDD average transfer rate: 285 MB/s Type: HDD Component for: Server/workstation HDD interface transfer rate: 12 Gbit/s HDD sustained transfer rate: 272 MiB/s Power consumption (idle): 5.7 W Power consumption (typical): 9.2 W Operating voltage: 5 / 12 V Operating temperature (T-T): 5 - 60 °C Operating vibration: 0.67 G Operating shock: 50 G Storage temperature (T-T): -40 - 70 °C Non-operating vibration: 1.04 G Non-operating shock: 250 G Height: 26.1 mm Depth: 147 mm Width: 101.6 mm Weight: 690 g Warranty period: 5 year(s) Warnings: Store away from water and moisture.