WD Purple 4TB Surveillance Internal Hard Drive.

About this item

WD Purple 4TB Surveillance Internal Hard Drive.Engineered specifically for mainstream surveillance systems.All Frame 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 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 on your hardware and software components and configurations.1TB through 3TB support up to eight bays 4TB and above support up to 16 bays and employ tarnish-resistant components for harsher environments.As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.