WD Purple SATA 4TB

Western Digital WD Purple hard drives are designed specifically for security solutions. The unique AllFrame technology makes the drives extremely reliable. WD Purple's exclusive firmware upgrades work with ATA streaming and reduce error pixelation and video interruptions that occur when desktop hard drives are mistakenly used for security solutions.

Key features:
Reduced video frame loss with surveillance-class storage
Specifically tuned for surveillance systems
Cache algorithms tuned for write-intensive applications with low bit rates and high numbers of streams typical of surveillance applications
Change priority for write allocations and proactive cache policies
Support for TLER and ATA streams
Supports up to eight drives