Features Transfer Rate up to 2TB-6TB: 175MB/s 8TB: 215MB/s Interface SATA Form Factor 3.5-Inch Recording Technology CMR 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