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

Operating shock: 50 G | HDD sustained transfer rate: 272 MiB/s | Depth: 147 mm | Hot-swap: No | Type: HDD | Height: 26.1 mm | Interface: SAS3 | Weight: 690 g | Storage temperature (T-T): -40 - 70 °C | HDD capacity: 20 TB | HDD interface transfer rate: 12 Gbit/s | Storage drive buffer size: 512 MB | HDD size: 3.5" | HDD average transfer rate: 285 MB/s | Start/stop cycles: 600000 | Power consumption (typical): 9.2 W | Operating vibration: 0.67 G | Power consumption (idle): 5.7 W | Non-operating vibration: 1.04 G | Mean time between failures (MTBF): 2500000 h | Non-operating shock: 250 G | Component for: Server/workstation | 24/7 operation: Yes | Width: 101.6 mm | Average latency: 4.16 ms | Operating temperature (T-T): 5 - 60 °C | HDD speed: 7200 RPM | Warranty period: 5 year(s) | Operating voltage: 5 / 12 V | Warnings: Do not dispose of in normal waste, special disposal. | Warnings: Avoid exposure to extreme temperatures. | Warnings: Store away from water and moisture.