Western Digital Purple 2TB 5400 RPM Surveillance Desktop Internal Hard Disk Drive ( WD20PURZ )

Engineered specifically for surveillance security systems Supports up to 180 TB per year work load rate Prioritized write-operations for maximized surveillance performance Support for more than eight bays Tuned for write-intensive, low bit-rate, high stream-count applications typical to most surveillance applications TLER and ATA streaming support Tarnish-resistant components