Western Digital Purple internal hard drive 1 TB 5400 RPM 64 MB 3.5" Serial ATA III

Noise level (idle): 21 dB HDD speed: 5400 RPM Mean time between failures (MTBF): 1000000 h Workload rate limit: 180 TB/year Interface: Serial ATA III Type: HDD Hot-swap: No Start/stop cycles: 300000 HDD size: 3.5" HDD average transfer rate: 180 MB/s Storage drive buffer size: 64 MB HDD capacity: 1 TB Component for: Surveillance system HDD interface transfer rate: 6 Gbit/s Power consumption (read): 3.8 W Power consumption (idle): 3.2 W Power consumption (write): 3.8 W Power consumption (standby): 0.3 W Operating shock: 30 G Operating temperature (T-T): 0 - 65 °C Non-operating shock: 250 G Width: 101.6 mm Depth: 147 mm Height: 26.1 mm Weight: 449 g Storage drive adapter included: No Compliance certificates: CB Maximum number of cameras supported: 64 Harmonized System (HS) code: 84717050 Warnings: Do not open or disassemble. Sustainability compliance: Yes