Western Digital WD Purple 8.9cm (3.5") 8TB SATA3 5640 256MB WD85PURZ intern

WD Purple® surveillance hard drives deliver reliable 24/7 performance for mainstream surveillance systems, with capacities up to 8TB. Engineered specifically for the demanding environment of NVR systems, these drives handle the elevated heat fluctuations and constant vibrations that would challenge standard desktop drives. Featuring exclusive WD AllFrame™ technology, they help reduce dropped frames and improve video playback quality. With a robust workload rating of up to 180TB/year—three times that of desktop drives—WD Purple drives support up to 64 single-stream HD cameras simultaneously. Built for continuous operation with an MTBF of up to 1 million hours and backed by a 3-year limited warranty, these drives are compatible with systems featuring up to 16 drive bays and include tarnish-resistant components for enhanced durability.