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

Average latency: 4.16 ms | Operating shock: 50 G | Warnings: Avoid exposure to extreme temperatures. | Weight: 679 g | Power consumption (typical): 6.4 W | Component for: Server/workstation | HDD interface transfer rate: 6 Gbit/s | Non-operating vibration: 1.04 G | Operating vibration: 0.67 G | Warnings: Do not dispose of in normal waste, special disposal. | Height: 26.1 mm | HDD size: 3.5" | Operating voltage: 5 / 12 V | Width: 101.6 mm | HDD speed: 7200 RPM | Start/stop cycles: 600000 | Operating temperature (T-T): 5 - 60 °C | Storage temperature (T-T): -40 - 70 °C | Mean time between failures (MTBF): 2500000 h | Warranty period: 5 year(s) | Type: HDD | HDD capacity: 18 TB | HDD average transfer rate: 269 MB/s | Storage drive buffer size: 512 MB | Hot-swap: No | Interface: Serial ATA III | Warnings: Store away from water and moisture. | Depth: 147 mm | 24/7 operation: Yes | Power consumption (idle): 5.3 W | Non-operating shock: 250 G | HDD sustained transfer rate: 257 MiB/s