WD PURPLE 4TB SURVEILLANCE INTERNAL 3.5" SATA DRIVE HDD, 3YR

4TB surveillance hard drive designed for 24/7 DVR and NVR systems. Features AllFrame technology to reduce frame loss and support for up to 64 HD cameras in continuous recording environments.

Capacity: 4TB Form Factor: 3.5-inch Interface: SATA 6 Gb/s Speed: 5400 RPM class Recording Technology: CMR (Conventional Magnetic Recording) Cache: 128 MB (WD44PURZ model) Workload Rating: 180 TB/year Max Drive Bays Supported: 16 Camera Support: Up to 64 HD cameras Transfer Rate: Up to 180 MB/s Warranty: 3-year limited AllFrame Technology: Yes Tarnish-resistant Components: Yes