 "Western Digital Red 2 TB Internal HDD" " Western HDD - WD20EFRX 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 2TB SATA 3 Internal Hard Drive/HDD ST2000DM001"@en ST2000DM001 LN42857 | SCAN UK"@en
"2TB Seagate ST2000DM001 BarraCuda, 7200.14, SATA III 6GB/s, 7200rpm, 64MB Cache, 8ms, OEM, NCQ              "@en 