WD Purple Surveillance HDD – 8TB 5640 RPM, SATA 6 Gb/s, 256MB Cache, AllFrame 4K, 3.5" CMR – WD85PURZ

WD Purple® WD20PURZ (8TB) surveillance hard drives it engineered for continuous video recording in DVR and NVR systems. With WD AllFrame™ 4K technology, they reduce frame loss and improve video playback quality. Supporting up to 64 HD cameras and 8 drive bays, it is ideal for small to medium surveillance setups. Featuring a workload rating of 180TB/year, MTBF of 1 million hours, and advanced CMR recording technology, it ensure reliable performance. The WD20PURZ delivers up to 145MB/s transfer rate with 64MB cache, while the WD10PURZ provides 110MB/s transfer rate with 64MB cache.