Performance You Can Trust From a worldwide leader in the storage industry, WD Purple is engineered for quality video playback when you need it most. Expand Your View to 64 WD Purple drives are optimized to support up to 64 cameras, giving you flexibility to upgrade or expand your security system. SEAMLESS INTEGRATION With a wide range of industry-leading enclosures and chipsets supported, you're sure to find the configuration and compatibility that's right for your NVR. LESS IS MORE Low power consumption is a must in a high-temperature, always-on surveillance environment. IntelliSeek technology helps reduce damaging ambient noise and vibrations. DESIGNED FOR SURVEILLANCE The WD Purple drive is designed for both DVR and NVR security systems, and is compatible with many of the the leading surveillance and security manufacturers. We can help you find the perfect storage for your system. What is the difference between a desktop drive and a WD Purple drive? The WD Purple drive is designed specifically for 24/7 DVR and NVR surveillance solutions and is optimized with AllFrame™ technology for system playback and performance. WD Purple drives support 3x the workload rating of desktop drives, making them more capable of handling the higher demands of video surveillance systems. What capacity do you recommend for my surveillance? Higher capacity WD Purple drives allow you to store more footage, more high definition video, and more high quality frames per second. WD recommends 4TB or greater for your DVR or NVR surveillance solution. Easy backup and upgrade Acronis True Image WD Edition software, available as a free download, can clone drives and backup your operating system, applications, settings and all of your data. Specifications: Western Digital Purple HDD size: 3.5" HDD capacity: 10000 GB HDD speed: 7200 RPM