Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version];

Features : Built for 24/7 surveillance , AllFrame technology for better performance, Designed to support up to 32 HD cameras, Engineered specifically for surveillance security systems. Supports up to 180TB/year workload rate. 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. Support for more than eight bays. 3-year limited warranty. Compatible with: PC; Mac