
Western Digital WD20EFRX 2TB 3.5-inch SATA 6Gb/s 64MB Cache Hard Drive,

Amazon.com: Western Digital 2TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5,

Amazon.com: Western Digital 2TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5,

WD20EZRX Western Digital 2TB 5400RPM SATA 6.0 Gbps 3.5 inch Caviar Hard Drive : Electronics - Amazon.com,

Western Digital WD20EFRX-68EUZN0 - 2TB 5.4K RPM 64MB Cache SATA 3.5,