The Western Digital 8TB Purple (WD85PURZ) is purpose-built for surveillance storage, offering reliable 24/7 operation for systems with up to 64 cameras. With a 5400RPM spin speed, 256MB cache, and SATA III interface, it provides quiet, energy-efficient performance in high-definition, always-on environments. Designed for DVR and NVR setups, it's backed by a 3-year limited warranty for peace of mind.