WD Purple Pro WD181PURP - hard drive - 18 TB - SATA 6Gb/s - WD181PURP - Internal Hard Drives - CDW.com
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Amazon.com: Western Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD181KFGX : Electronics
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