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Amazon.com: HP 657736-001 3.0TB SATA Hard Drive Disk (HDD) - 7,200 RPM, Entry, Hot Plug (HP), 3Gb per Second Transfer Rate (TR), 3.5-in Form Factor : Electronics
3TB Hard Drive for Security Surveillance Systems – GW Security
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