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Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage, 3 year Rescue Services (ST20000NT001) : Amazon.co.uk: Computers & Accessories
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Seagate SkyHawk AI, 20 TB, Internal Surveillance Hard Drive, 3.5", SATA 6Gb/s, 256MB Cache, DVR NVR Security Camera System, 3 year Rescue Services (ST20000VE002) : Amazon.co.uk: Computers & Accessories
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