Western Digital WD 2TB Purple Surveillance Hard Drive WD23PURZ Western Digital WD Purple Surveillance Hard Drive WD23PURZ -3 YEARS LIMITED WARRANTYCapacity 2TBInterface SATAForm Factor 3.5 Inch - Recording Technology CMRUncompromising Surveillance Storage - WD Purple drives are designed to meet the challenges of 24x7 video surveillance recording. These drives are engineered specifically for surveillance to help withstand the elevated heat fluctuations and equipment vibrations within NVR environments. An average desktop drive is built to run for only short intervals, not the harsh 24/7 always-on environment of a high-definition surveillance system. With WD Purple drives,Industry-Leading Storage. Surveillance You Can Trust - Western Digital has provided surveillance-grade storage for more than a decade. With WD Purple surveillance storage, drives are engineered for high temperature, always-on surveillance systems so you can rely on quality video when you need it most. - Western Digital's Exclusive All - Frame Technology - All WD Purple drives are equipped with All - Frame technology, which helps reduce video frame drops and improves video recording and playback. - Enhanced Workload Ratings - WD Purple drives feature a workload rating of up to 180TB/year - up to three times that of desktop drives - to handle the unique demands of mainstream video surveillance DVR and NVR systems. Multiple Cameras, Multiple Streams - Modern recorders now support multiple video streams per camera. WD Purple drives support up to 64 single-stream HD cameras. With so many options, you have the flexibility to upgrade or expand your security applications in the future. - Designed for Surveillance Solutions - With an MTBF of up to 1 million hours3, WD Purple drives