WD Purple WD64PURZ 6TB, SATA 6Gb/s 256MB Cache Surveillance Hard Drive

Capacity: 6TB,
Form Factor: 3.5-Inch,
Connector/Interface: SATA,
Transfer Rate: Up to 175MB/s,
Disk Speed: 5400 RPM,
Recording Technology: CMR,
Cache Size: 256MB,
Dimensions: 5.79″ x 4″ x 1.03″,
Weight: 570g,
Model Number: WD64PURZ,
Operating Temperature: 0°C to 65°C,
Non-Operating Temperature: -40°C to 70°C,
Features: Engineered for mainstream surveillance systems, WD AllFrame technology for optimizations in write-intensive workloads, supports up to 180TB/yr workload rate and up to 16 bays,
Compatibility: Up to 64 HD cameras, up to 16 drive bays, AllFrame firmware technology.