WD 3 TB WD Purple SATA III Intellipower 64 MB Cache Bulk/OEM AV Hard Drive 3
Built for always-on surveillance storage applications
AllFrame technology for reduced pixilation and video interruption
Designed to support up to 32 HD cameras
Caching algorithms specifically designed for security surveillance operation
3 year limited warranty
3 TB capacity holds up to 600,000 digital photos, 750,000 MP3 files, and 360 hours of HD video.