The WD Purple Surveillance Storage Hard Drive offers exclusive AllFrame technology to bring you premium reliability and peace-of-mind when installing your home or small to medium business security system. This WD Purple HDDs exclusive firmware upgrades work with ATA streaming to reduce error pixellation and video interruptions that occur when desktop hard drives are incorrectly used as storage in security systems. A WD Purple is built for 24/7, always-on, high-definition surveillance security systems that use up to eight hard drives and up to 64 cameras.
 
You wouldn't use a bicycle to transport cargo across the country because its not the right tool for the job. You also shouldn't use a desktop hard drive in your surveillance security system because it wasn't designed for that application. WD Purple surveillance-class storage has been tested to be compatible in a wide-range of security systems. This WD Purple Surveillance Storage Hard Drive is designed to replace standard desktop drives that were not designed for the harsh 24/7 always-on, high-definition surveillance environment. Desktop drives are built to run for only short intervals and are not engineered to withstand high-temperature fluctuations and equipment vibrations found in a typical surveillance application.