Western Digital Ultrastar DC HC555 internal hard drive 18 TB 7200 RPM 512 MB 3.5" Serial ATA III

HDD sustained transfer rate: 257 MiB/s HDD capacity: 18 TB Component for: Server/workstation 24/7 operation: Yes Mean time between failures (MTBF): 2500000 h HDD interface transfer rate: 6 Gbit/s Interface: Serial ATA III HDD speed: 7200 RPM Average latency: 4.16 ms Type: HDD Hot-swap: No Storage drive buffer size: 512 MB HDD size: 3.5" Start/stop cycles: 600000 HDD average transfer rate: 269 MB/s Operating voltage: 5 / 12 V Power consumption (typical): 6.4 W Power consumption (idle): 5.3 W Operating vibration: 0.67 G Operating shock: 50 G Operating temperature (T-T): 5 - 60 °C Non-operating shock: 250 G Storage temperature (T-T): -40 - 70 °C Non-operating vibration: 1.04 G Depth: 147 mm Height: 26.1 mm Weight: 679 g Width: 101.6 mm Warranty period: 5 year(s) Warnings: Store away from water and moisture.