WD Purple 4TB Surveillance 3.5 IntelliPower SATA3 6Gb/s 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