 "Western Digital Red 3 TB Internal HDD" " Western HDD - WD30EFRX Desktop Hard Drives CDW.com
"WD's exclusive NASware technology, built into every WD Red hard drive, improves NAS storage performance by reducing common hard drive concerns in NAS systems including concerns for things like compatibility, integration, upgradeability, reliability and cost of ownership that are experienced with a hard drive designed for desktop computers." 
 "Seagate Barracuda ST2000DM006 - hard drive 2 TB SATA 6Gb/s" " Seagate 6Gb/s Internal Desktop Hard Drives CDW.com
"This HDD for all your PC needs brings you outstanding excellence in personal computing." 