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PowerEdge T340 T440 T640 - Dell 4TB 7200 RPM 12Gbps SAS 3.5 inch 14G Hard Drive
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0B26930 - Netapp 4TB 7200 RPM SAS 3.5" HDD for E-Series 12 bay DE1600, E2612,... | eBay
Amazon.com: Western Digital RE WD4000FYYZ 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5in Enterprise Internal Hard Drive - OEM w/3 Year Warranty (Renewed) : Electronics
Seagate FireCuda 4TB 7200 RPM SATA III 6Gb/s 3.5" Internal CMR Hard Drive - Micro Center
HGST/WD Ultrastar 4TB 7200 RPM 512e SATA 6Gb/s 3.5-Inch Enterprise Hard Drive (HUS726T4TALE6L4) - TechnoDeals USA
Seagate Enterprise Capacity 3.5'' HDD 4TB 7200 RPM 512e SATA 6Gb/s 128MB Cache Internal Hard Drive ST4000NM0115 - Newegg.com
Seagate FireCuda ST4000DX005 4TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal HDD Bare Drive - Walmart.com