WD Purple Alhua 6TB Surveillance Hard Drive

The WD Purple 6TB Surveillance Hard Drive (models like WD64PURZ or WD60PURZ) is a reliable 3.5" internal HDD built specifically for 24/7 CCTV/NVR systems. It supports up to 64 HD cameras, handles heavy workloads (up to 180TB/year), features AllFrame technology for smooth multi-stream playback and reduced frame loss, CMR recording, SATA 6Gb/s interface, 256MB cache (on newer variants), and sustained transfer rates up to ~175–180 MB/s. Optimized for always-on operation with vibration tolerance, low power draw (~5–7W active), quiet performance, and a 3-year limited warranty.