PolarisUSA proudly offers the best hard drives (HDD) in the industry. The Western Digital (WD) Purple WD40PURZ is built for 24/7 High Definition Security Systems. Chosen specifically for Digital Video Recorders (DVR), HD-CVI Recorders (CVR) and Network Video Recorders (NVR), each unit can save massive amounts of data to the HDD for your protections and information. The WD Purple 10TB and 12TB drives are designed to support Deep Learning Analytics in AI capable Network Video Recorders (NVR).

Features: 

• Capacity:          4TB SATA Hard Drive
• Form Factor:    3.5 Inch 
• Cache:              64MB
• RPM                  5400
• Warranty:        3-Year Manufacturer / 1-Year PolarisUSA

Accept no substitutes! PolarisUSA uses A/V Hard Drives for maximum reliability and longevity. A/V drives are designed and optimized for use in Digital Video Recorders and Network Video Recorders, where data is constantly being written, rather than read. Standard PC hard disks just don't cut it! All of our drives are NEW, don’t accept refurbished units from our competitors!