The WD Purple NV hard drive adds support for surveillance systems with higher drive bay configurations and up to 64 HD cameras.

WD Purple 4TB Surveillance 6Gb/s 3.5″ SATA Hard Drive

– Built for 24/7 surveillance
– AllFrame technology for better performance
– Designed to support up to 32 HD cameras
– Backwards Compatibility
– (With 02 Years Warranty)