The UK edition

Western Digital Blue Purple internal hard drive 8 TB 5400 RPM 256 MB 3.5" Serial ATA III

£357.99

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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. Uncompromising Surveillance Storage. WD Purple drives are designed to meet the challenges of 24x7 video surveillance recording. These drives are engineered specifically for surveillance to help withstand the elevated heat fluctuations and equipment vibrations within NVR environments. An average desktop drive is built to run for only short intervals, not the harsh 24/7 always-on environment of a high-definition surveillance system. Wi