Western Digital WD Purple 4TB 3.5″ Surveillance HDD 5400RPM 64MB SATA3 6Gb/s 150MB/s 180TBW 24×7 64 Cameras AV NVR DVR 1.5mil MTBF 3yrs (LS) –WD44PURZ

Key Features
Storage Capacity: 4 TB
Buffer: 256 MB
Wireless LAN: No
Drive Interface: SATA
Drive Interface Standard: SATA/600
Drive Type: Internal
Form Factor: 3.5″

WD Purple™
WD Purple™ drives are engineered specifically for surveillance to help withstand the
elevated heat fluctuations and equipment vibrations within NVR environments. An
average desktop drive is built to run for only short intervals, not the harsh 24/7 always-on
environment of a high-definition surveillance system. With WD Purple, you get reliable,
surveillance-class storage that’s tested for compatibility in a wide range of security
systems. Exclusive AllFrame™ technology helps reduce frame loss and improve overall
video playback.

Three-Year Limited Warranty
As an industry-leading hard drive manufacturer, Western Digital stands behind their
surveillance storage solutions with a 3-year limited warranty included with every WD
Purple™ drive.