DetailsWD Red is designed specifically for home and small business NAS systems from 1-8 bays and PCs with RAID. The new WD Red Pro adds additional support for medium to larg NAS systems from 8 to 16 bays. Exclusive NASware 3.0 technology - 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. Error Recovery Prevention - Built specifically for RAID and NAS environments, WD Red Pro drives come equipped with error recovery controls as part of NASware 3.0, which prevents the drive from fallout in RAID applications. Vibration Protection - 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.