WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch : Amazon.co.uk: Computers & Accessories
Seagate ST4000NM0025 4000GB SAS internal hard drive - internal hard drives (4000 GB, SAS, 7200 RPM, 3.5", Server/workstation, HDD) : Amazon.co.uk: Computers & Accessories
HGST Ultrastar 7K4000 4TB 64MB Cache 7200RPM SATA III (6.0Gb/s) 3.5inch Internal Enterprise Hard Drive -5 Year Warranty (Refurbished) : Amazon.co.uk: Computers & Accessories
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
Toshiba MG03ACA400 Internal Hard Drive 4TB 8.9 cm 3.5 Inches 7200 rpm : Amazon.co.uk: Computers & Accessories
WD Purple 4TB Hard Drive for Video Surveillance - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURX : Amazon.co.uk: Computers & Accessories
Dell 4TB SAS - internal hard drives (Serial Attached SCSI (SAS), HDD, : Amazon.co.uk: Computers & Accessories
Western Digital Green WD40EZRX 4TB Internal SATA 3.5inch HardDrive : Amazon.co.uk: Computers & Accessories
Western Digital Blue WD40EZAZ 4TB SATA 6Gb/s 3.5" Hard Drive WD Blue,Solid State Hard Drive : Amazon.co.uk: Computers & Accessories
Seagate ST4000VN000 4TB NAS HDD SATA III 3.5 inch Internal Hard Disk Drive for 1- to 8-Bay NAS Systems : Amazon.co.uk: Computers & Accessories
WD - 4TB Desktop SATA Hard Drive - OEM - Black : Amazon.co.uk: Computers & Accessories
Western Digital RE4 - 4TB 3.5-inch Enterprise SATA Hard Drive - OEM : Amazon.co.uk: Computers & Accessories
Western Digital HDD Desk Red Pro 4TB 3.5 SATA 128MB Serial ATA III : Amazon.co.uk: Computers & Accessories
Seagate FireCuda HDD, 4 TB, Internal Hard Drive HDD - 3.5 Inch CMR SATA 6 Gb/s 7,200 RPM 256 MB Cache 300 TB/year, 3 year Rescue Services (ST4000DXZ05) : Amazon.co.uk: Computers & Accessories
Sonnics 4TB 3.5" SATA Hard Drive 7200RPM Desktop PC/Surveillance Storage Hard Drive CCTV Camera CCTV System DVR (Renewed) : Amazon.co.uk: Computers & Accessories
Toshiba 6TB Enterprise SATA Hard Drive - 7200 RPM, 128MB Cache, 6 Gb/s Transfer Rate for Business and Personal Use : Amazon.co.uk: Computers & Accessories