Western Digital PUR 3.5" 5400rpm 64MB SATA 6Gb/s (WD40PURZ) - 4TB

WD Purple Surveillance Hard Disc Drive. Built for 24/7, always-on, high-definition security systems. With a supported workload rate of up to 180 TB/yr and support for up to 64 cameras, WD Purple drives are optimised for surveillance systems. Engineered for compatibility. WD Purple surveillance hard drives are built for compatibility with industry-leading chassis and chip set manufacturers for seamless integration into your new or existing video surveillance system. With support for up to 64 surveillance cameras per hard drive, WD Purple gives you the flexibility to upgrade and expand your security system in the future. WD Purple Surveillance hard drives are designed for high temperature, always-on, surveillance security systems to help ensure reliability and quality video play back when you need it most. With IntelliSeek technology, WD Purple drives are able to calculate optimum seek speeds; this keeps power consumption low so ambient noise and vibrations are at a minimum. From one of the worldwide leader in the storage industry, WD Purple is engineered for quality video playback when you need it most