HDD 3.5″ 6TB Western Digital WD Purple Surveillance SATA3 256MB WD64PURZ

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