 "WD Red Pro NAS Hard Drive WD4002FFWX - hard drive 4 TB SATA 6Gb/s" " WD 6Gb/s Enterprise Drives CDW.com
"Joining the original color of NAS, WD Red Pro continues the formula of success that has led the WD Red product family by adding support beyond consumer and small business markets into medium and large 8-16 bay business storage systems. WD Red Pro hard drives integrate WD's exclusive technology, NASware, to provide unparalleled support for drive compatibility, reliability, and performance." 
 " WD Black 2TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch WD2003FZEX "@en-US "WD WD200"@en-US
"Sophisticated performance enhancing features deliver the speed you need for demanding applications like photo and video editing and Internet gaming. High performance, high capacity, high reliability, and cutting-edge technology make up Wd Black, the ideal drive for those who demand only the best. "@en-US 
 Item Weight 1.41 pounds Item Size 4 x 1 x 1 inches Package Weight 1.63 pounds Package Size 6.14 x 3.07 x 3.07 inches Units in Package 1