18TB Western Digital WD Red Pro 7200 RPM 3.5" NAS Internal Hard Drive (WD181KFGX)
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Western Digital $299.99
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Newegg $299.99
14TB Western Digital WD Red Plus 7200 RPM 3.5" NAS Internal Hard Drive (WD140EFGX)
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Newegg $209.99
8TB Western Digital WD Red Plus 5640 RPM 3.5" NAS Internal Hard Drive (WD80EFZZ)
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Western Digital $134.99
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Newegg $134.99
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Amazon $134.99