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Western Digital WD Re 3.5" 4TB 7200RPM 64MB 6Gbps SATA HDD Hard Drive WD4000FYYZ | eBay
Seagate Constellation ES ST4000NM0033 4TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Enterprise Hard
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Dell 4TB 3.5in SAS Hard Drive MG03SCA400
Synology HAT5300-4T 4TB 3.5" SATA 7200rpm Enterprise Grade HDD (MTTF 2 Million Hours) / Synoloyg NAS Exclusive / 5 Year Warranty
ST4000DM004 Seagate Hard Drive
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