HDD 3.5" 4TB Western Digital WD Purple Surveillance SATA3 128MB WD44PURZ

Specifications Capacity: 4TB Form Factor: 3.5-Inch Connector: SATA Interface: SATA Transfer Rate: up to 175MB/s Recording Technology: CMR Cache Size: 128MB Dimensions (L x W x H): 147mm x 101.6mm x 26.1mm Weight: 0.55kgs Model Number: WD44PURZ Operating Temperature: 0°C to 65°C Non-Operating Temperature: -40°C to 70°C Certifications: BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL Product 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 Compatibility Up to 64 HD cameras Up to 16 drive bays AllFrame firmware technology