Western Digital WD Purple 4TB Surveillance 3.5 SATA3 6Gbps 64MB WD40PURZ

WD Purple ( WD40PURZ) Superior storage. Superior surveillance. WD Purple drives are built for 24/7, always-on, high-definition security systems. With support for up to 8 hard drives and 32 cameras, WD Purple drives are optimized for surveillance Product Specifications Interface SATA 6 Gb/s Performance Specifications Rotational Speed IntelliPower Buffer Size 64 MB Load/unload Cycles 300,000 minimum Transfer Rates Buffer To Host (Serial ATA) 6 Gb/s (Max) Physical Specifications Capacity 4 TB Form Factor 3.5 Inch User Sectors Per Drive 7,814,037,168 Physical Dimensions Metric Height 26.1 mm Depth 147 mm Width 101.6 mm Weight 0.68 kg Environmental Specifications Shock Operating Shock (Read) 65G, 2 ms Non-operating Shock 250G, 2 ms Acoustics Idle Mode 26 dBA (average) Seek Mode 0 27 dBA (average) Temperature (Metric) Operating -0° C to 65° C Non-operating -40° C to 70° C Electrical Specifications Current Requirements Power Dissipation Read/Write 5.10 Watts Idle 4.50 Watts Standby 0.50 Watts Sleep 0.50 Watts Compatibility Operating System Compatibility Windows/Mac