Built for 24/7, always-on, high-definition security systems. with a supported workload rate of up to 180 tb/yr1 and support for up to 64 cameras, wd purple drives are optimized for surveillance systems. wd purple 8tb, 10tb, 12tb, 14tb & 18tb drives are designed to support deep learning analytics in ai capable nvrs, and feature an enhanced workload rating of up to 360tb/yr