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Western Digital WD201KFGX 3.5 in. Red Pro 20TB 7200 RPM 512MB Cache Internal Hard Drive - Walmart.com
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Amazon.com: Western Digital 20TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD201KRYZ : Electronics
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