WD Purple 2TB Surveillance 3.5" Internal Hard Drive, AllFrame Technology, 180BT/yr, 64MB Cache, 3 Year Warranty

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 180 TB/yr workload rate(3) | (3) Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ✕ (8760 / recorded power-on hours)). Workload Rate will vary depending onhardware and software components and configurations.