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

Operating vibration: 0.67 G | Non-operating vibration: 1.04 G | Warnings: Do not dispose of in normal waste, special disposal. | Component for: Server/workstation | Warnings: Avoid exposure to extreme temperatures. | Storage drive buffer size: 512 MB | Width: 101.6 mm | HDD interface transfer rate: 6 Gbit/s | Interface: Serial ATA III | Warnings: Store away from water and moisture. | Height: 26.1 mm | Operating temperature (T-T): 5 - 60 °C | HDD average transfer rate: 285 MB/s | Hot-swap: No | Storage temperature (T-T): -40 - 70 °C | Average latency: 4.16 ms | HDD capacity: 20 TB | HDD size: 3.5" | Weight: 690 g | Start/stop cycles: 600000 | Power consumption (typical): 6.4 W | HDD speed: 7200 RPM | Operating shock: 50 G | Type: HDD | 24/7 operation: Yes | Mean time between failures (MTBF): 2500000 h | Power consumption (idle): 5.3 W | Operating voltage: 5 / 12 V | Warranty period: 5 year(s) | Non-operating shock: 250 G | Depth: 147 mm | HDD sustained transfer rate: 272 MiB/s