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WD Blue 1TB Desktop 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 64MB Cache, 2 Year Warranty : Amazon.co.uk: Computers & Accessories
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Amazon.com: White Label WL 4TB 7200RPM 64MB Cache SATA 6.0Gb/s (Enterprise Grade) 3.5" Hard Drive (for Server, RAID, NAS, DVR, Desktop PC) w/1 Year Warranty : Electronics
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