New CCTV Surveillance Hard Drive SATA-III 3.5" for PC CCTV DVR NVR HDD – CASPERi
Seagate SkyHawk, 4 TB, Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 64 MB Cache for DVR NVR Security Camera System, and Three-year Rescue Services, Silver (ST4000XV007) : Amazon.co.uk:
CCTV HARD DRIVE 3.5" 1TB 2TB 3TB 4TB 6TB SATA HD CCTV DVR DESKTOP MAC PC CCTV | eBay
WD Purple 4TB 3.5" SATA Surveillance Hard Drive | CCTV101
Surveillance Hard Drive 4 TB | Axis Communications
Western Digital Purple 4TB Surveillance 3.5 Inch SATA 6 Gb/s Hard Disk Drive with Allframe 4K Technology - 180TB/yr, 64MB Cache, 5400rpm - WD40PURZ : Amazon.co.uk: Computers & Accessories
Seagate SkyHawk Surveillance Hard Drive 4TB 256MB SRM - NAS STORE