STBD3000100 Seagate Barracuda 3TB 7.2K RPM 7Pin SATA Hard Drive
Amazon.com: Seagate BarraCuda 3TB Internal Hard Drive HDD – 2.5 Inch Sata 6Gb/s 5400 RPM 128 MB Cache for Computer Desktop PC (ST3000LM024) : Electronics
Amazon.com: Western Digital 3TB WD Blue PC Internal Hard Drive HDD - 5400 RPM Class, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD30EZAZ : Electronics
WD purple 3TB harddisk
Seagate Desktop HDD ST3000DM001 Desktop Hard Drive - Drive Solutions