Refurbished: WD4003FRYZ - Western Digital Gold Enterprise Class 4TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Internal Hard Drive - Newegg.com
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WD WD4003FRYZ Gold DC HA750 4TB SATA Hard Drive w/ 7200RPM 6Gb/s 256MB Cache, Two Pack
WESTERN DIGITAL GOLD 4TB 3.5" SATA 6Gb/s DRIVE DC HA750 WD4003FRYZ | eBay
Western Digital WD Gold Enterprise-Class Hard Drive WD4003FRYZ - Hard drive - 4 TB - internal - 3.5" - SATA 6Gb/s - 7200 rpm - buffer_ 256 MB on Servers Direct
WD WD4003FRYZ Gold DC HA750 4TB SATA Hard Drive w/ 7200RPM 6Gb/s 256MB Cache, Four Pack