Seagate CCTV DVR Hard Drive 1 TB SATA Internal (ST1000VX002SP)
Amazon.com: Seagate SkyHawk 8TB Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for DVR NVR Security Camera System with Drive Health Management (ST8000VX0022) : Electronics
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Seagate 500GB, Desktop PC CCTV Internal Hard Drive HDD SATA 5900 3.5 ST3500312CS 763649021682 | eBay
Seagate SkyHawk 4TB Surveillance Hard Drive 3.5" - Newegg.com