Western Digital Ultrastar DC HC555 internal hard drive 18 TB 7200 RPM 512 MB 3.5 SAS3

Warnings: Store away from water and moisture. | Warnings: Do not dispose of in normal waste, special disposal. | Warnings: Avoid exposure to extreme temperatures. | Operating voltage: 5 / 12 V | Warranty period: 5 year(s) | Start/stop cycles: 600000 | Weight: 679 g | 24/7 operation: Yes | Operating temperature (T-T): 5 - 60 °C | Power consumption (idle): 5.4 W | Hot-swap: No | Type: HDD | Non-operating shock: 250 G | Operating shock: 50 G | Storage drive buffer size: 512 MB | HDD capacity: 18 TB | HDD speed: 7200 RPM | Power consumption (typical): 8.8 W | Average latency: 4.16 ms | HDD average transfer rate: 269 MB/s | HDD size: 3.5" | Non-operating vibration: 1.04 G | Depth: 147 mm | Height: 26.1 mm | Interface: SAS3 | Width: 101.6 mm | HDD sustained transfer rate: 257 MiB/s | Component for: Server/workstation | HDD interface transfer rate: 12 Gbit/s | Storage temperature (T-T): -40 - 70 °C | Operating vibration: 0.67 G | Mean time between failures (MTBF): 2500000 h