SINGLE BULK PACK WD Red Pro 4 TB NAS Hard Drive 8 to 16 bay: 3.5-inch SATA 6, 64MB Cache. WD Red Pro is designed specifically for medium to large NAS systems that have 8 to 16 drive bays. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and for the demanding system requirements of medium to large NAS. Our exclusive advanced firmware technology built into every WD Red Pro drive, NASware 3.0 enables seamless integration, robust data protection and optimal performance for systems operating in the demanding NAS environment. In combination with 3D Active Balance Plus, WD Red Pro also features hardware vibration compensation technology which monitors the drive to correct both linear and rotational vibration in real time, further increasing drive reliability. 5 Year Warranty
