Western Digital WD30EFRX-68EUZNO 3TB SATA NAS HDD A15 - All Things Surplus
Amazon.com: WL 3TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Hard Drive (For Server, RAID, NAS, DVR, Desktop PC) w/1 Year Warranty : Electronics
3TB Western Digital WD Blue 3.5-inch SATA III Desktop Hard Drive (5400rpm, 64MB cache) - Walmart.com
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