Toshiba S300 Surveillance - Hard drive - 1 TB - internal - 3.5" - SATA 6Gb/s - 5700 rpm - buffer: 64 MB - Hunt Office UK
Seagate SkyHawk AI Internal Surveillance Hard Drive HDD 8TB 3.5" SATA 6Gb/s 256MB Cache DVR/NVR Security Camera System Rescue Services Model No.:ST8000VE001 : Amazon.co.uk: Computers & Accessories