WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX Description WD Purple surveillance storage is built for 24/7 always-on surveillance in high-definition security systems that use up to eight hard drives and up to 32 cameras. Exclusive All Frame technology works with ATA streaming to reduce error pixilation and video interruptions that occur when desktop hard drives are incorrectly used as storage in security systems. Features: Engineered specifically for surveillance security systems,Reduced video frame loss 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. Package includes a hard drive only - no screws, cables, manuals included. Please purchase mounting hardware and cables separately if necessary. Ships in WD-certified box for safe transit during shipping "Hard Drive Speed: 5400 RPMCache Buffer: 64MB Includes: Quick install guide and Operating System Compatibility: Windows 8, Windows 7, Mac" Built for always-on surveillance storage applications All Frame 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 6 TB capacity holds up to 1,200,000 digital photos, 1,500,000 MP3 files, and 450 hours of HD video. Product Details: Digital Storage Capacity: 6 TB Hard Disk Interface: Serial ATA-600 Connectivity Technology: SATA Brand: Western Digital Special Feature: Portable Hard Disk Form Factor: 3.5 Inches Hard Disk Description: Mechanical Hard Disk Compatible Devices: Desktop Installation Type: Screw In Color: Purple Hard Drive: ‎6 TB Mechanical Hard Disk Brand: ‎Western Digital Series: ‎Purple Item model number: ‎WD60PURX Hardware Platform: ‎PC; Mac Operating System: ‎Windows 8, Windows 7, Mac Item Weight: ‎1.58 pounds Product Dimensions: ‎5.8 x 4 x 1 inches Item Dimensions LxWxH: ‎5.8 x 4 x 1 inches Color: ‎Purple Flash Memory Size: ‎6 Hard Drive Interface: ‎Serial ATA-600 Hard Drive Rotational Speed: ‎5400 RPM Manufacturer: ‎Western Digital Is Discontinued By Manufacturer: ‎No Date First Available: ‎October 30, 2014