This hard drive from HGST has room for 6 TB of data. This model's rotation speed is 7 200 rpm.
From Senetic
WD Ultrastar DC HC310 6TB 3.5 HDD SATA 512E SE 7200RPM AIR 0B36039/HUS726T6TALE6L4
ABS IT Services
WD Ultrastar DC HC310 HUS726T4TALA6L4 - hard drive - 4 TB - SATA 6Gb/s (0B35950)
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