HDD 3.5" 4TB Western Digital WD Purple Surveillance SATA3 256MB WD43PURZ

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: 4TB 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 RPM Recording Technology: CMR Cache Size: 256MB Dimensions (L x W x H): 5.79" x 4" x 1.03" Weight: 570gms Model Number: WD43PURZ 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