Seagate SkyHawk 6TB Surveillance Hard Drive 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST6000VX0023 - Newegg.com
Amazon.com: Seagate Skyhawk 6TB Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for DVR NVR Security Camera System with Drive Health Management (ST6000VX0023) : Electronics