Seagate Desktop HDD 4TB 5900RPM 6gb/s 3.5" SATA Hard Drive ST4000DM000 | eBay
Amazon.com: White Label WL 1TB 64MB Cache 5900RPM SATA III (6.0Gb/s) (Quiet & Heavy Duty) Internal Desktop 3.5" Hard Drive (PC,CCTV DVR) - w/ 1 Year Warranty : Electronics
Seagate Pipeline HD ST3500312CS 500GB 5900RPM 8MB Cache SATA II 3.0Gb/s 3.5in Internal Hard Drive (PC, RAID, NAS, CCTV DVR) – YAS