Western Digital Purple 4TB Surveillance Hard Disk Drive – 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch – Western Digital40PURZ [Old Version]

Engineered specifically for surveillance security systemsReduced video frame lossTuned for write-intensive, low bit-rate, high stream-count applications typical to most surveillance applicationsPrioritized write-operations for maximized surveillance perfor