Western Digital 1TB HDD SATA 3.5 CCTV Purple Series

WD Purple Surveillance Storage is built for 24/7 always-on surveillance in high-definition security systems that use up to eight hard drives and up to 32 cameras. Exclusive AllFrame™ technology works with ATA streaming to reduce error pixilation and video interruptions that occur when desktop hard drives are incorrectly used as storage in security systems.
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: 1 TB
Form Factor: 3.5 Inch
User Sectors Per Drive: 1,953,525,168

Physical Dimensions
English
Height: 1.028 Inches
Depth: 5.787 Inches
Width: 4.00 Inches
Weight: 0.99 Pounds

Metric
Height: 26.1 mm
Depth: 147 mm
Width: 101.6 mm
Weight: 0.45 kg

Environmental Specifications
Shock
Operating Shock Read: 65G, 2 ms
Non-operating Shock: 250G, 2 ms

Acoustics
Idle Mode: 21 dBA average
Seek Mode 0: 22 dBA average

Temperature English
Operating: 32° F to 149° F
Non-operating: -40° F to 158° F

Temperature Metric
Operating: -0° C to 65° C
Non-operating: -40° C to 70° C

Electrical Specifications
Current Requirements
Power Dissipation
Read/Write: 3.30 Watts
Idle: 2.90 Watts
Standby: 0.70 Watts
Sleep: 0.70 Watts