WD Purple WD82PURZ 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive

Supports for more than 8 bays. Supports up to 180TB/year workload rate. Engineered specifically for surveillance security systems. Tuned for write-intensive, low bit-rate, high stream-count applications typical to most surveillance applications. Prioritized write-operations for maximized surveillance performance. TLER & ATA streaming support. Tarnish-resistant components.