WD 6TB 3.5" 256MB SATA Purple Surveillance

WD Purple hard drives are designed specifically for surveillance applications, so they can withstand the extreme temperature fluctuations and vibrations of NVR equipment. Typically, desktop hard drives are designed to operate for short periods of time only, not for the rigours of 24/7 operation in high-definition video surveillance systems. WD Purple surveillance hard drives have been tested for compatibility with a wide range of security systems, so you can be confident in the reliability of your dedicated hardware. Exclusive AllFrame technology reduces frame loss and improves video playback.