 "Seagate Desktop HDD 500GB, SATA 6Gb/s" 500GB
"The one drive for every desktop system need, supported by 30 years of trusted performance, reliability and simplicity.
" 
 Official Release Date  Jul 11, 2011 Genre  Hard Drive (Internal) PAX-Code PAX0006311692 Catalog No.  ST500DM002 Item Code  7636490030598
 "Western Digital Red 2 TB Internal HDD" " Western HDD - WD20EFRX Desktop Hard Drives CDWG.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." 