 "WD Gold Datacenter Hard Drive WD101KRYZ - hard drive 10 TB SATA 6Gb/s" " WD 6Gb/s Enterprise Drives CDW.com
"WD Gold hard drives employ advanced technology to deliver great reliability, capacity, power efficiency and performance. Designed for a multitude of datacenter-specific applications, WD Gold hard drives are perfect for high-availability server and storage arrays that demand robust storage device." 
 "Western Digital - Blue 4TB 3.5" 5400RPM Internal Hard Drive" Drive (WD40EZRZ) PCPartPicker"