Western Digital Ultrastar DC HC555 internal hard drive 20 TB 7200 RPM 512 MB 3.5 Serial ATA III

Interface: Serial ATA III | Operating vibration: 0.67 G | HDD speed: 7200 RPM | Non-operating shock: 250 G | Start/stop cycles: 600000 | Mean time between failures (MTBF): 2500000 h | Power consumption (typical): 6.4 W | HDD average transfer rate: 285 MB/s | Non-operating vibration: 1.04 G | Width: 101.6 mm | Power consumption (idle): 5.3 W | Storage temperature (T-T): -40 - 70 °C | HDD interface transfer rate: 6 Gbit/s | Average latency: 4.16 ms | Operating temperature (T-T): 5 - 60 °C | Weight: 690 g | HDD size: 3.5" | Component for: Server/workstation | Height: 26.1 mm | Operating voltage: 5 / 12 V | Storage drive buffer size: 512 MB | Warranty period: 5 year(s) | HDD capacity: 20 TB | Hot-swap: No | Type: HDD | 24/7 operation: Yes | HDD sustained transfer rate: 272 MiB/s | Depth: 147 mm | Operating shock: 50 G