HGST MegaScale DC 4000.B HMS5C4040BLE640 (0F23139) 4TB Coolspin 64MB Cache SATA III 6.0Gb/s 3.5" Enterprise NAS Hard Drive - w/3 Year Warranty - Walmart.com
HDN726040ALE614 HGST Hitachi Deskstar NAS 4TB 7200RPM SATA 6Gbps 128MB Cache 3.5-inch Internal Hard Drive
Hitachi HNAS 4060/4080 NAS Platform Appliance MFB2452 Used | eBay
Hitachi 7K320 160GB 7.2K 2.5" SATA Hard Drive 0A58903 / HTS723216L9SA60
Amazon.com: Hitachi 3TB 7200RPM 3.5" Desktop SATA Hard Drive for PC, Mac, CCTV DVR, NAS, RAID : Electronics