DELL 6P85J 4TB 3.5" SAS 7200 RPM internal hard drive

Enterprise capacity drive

The Dell 6P85J is a 4TB 3.5 inch SAS hard drive spinning at 7200 RPM. It is built for enterprise storage arrays that need high-capacity bulk storage with self-encryption. The drive includes a 128MB buffer and uses SLC NAND for enhanced endurance in write-heavy workloads. It ships as a bare drive with a tray for direct installation into compatible server bays.

Server bay integration

The SAS 6Gb/s interface connects directly to a compatible RAID controller or backplane in PowerEdge and PowerVault systems. No separate power adapter is required beyond the standard backplane supply. The 3.5 inch form factor with included tray fits dedicated hot-swap bays, freeing internal cabling space compared to 2.5 inch alternatives. Installation is tool-less in supported Dell chassis.

Thermal and power profile

The 7200 RPM spindle draws typical enterprise power levels for a 3.5 inch drive under sustained throughput. Operational acoustics are standard for high-capacity nearline SAS mechanics in a server chassis. The SLC NAND and 128MB buffer help maintain consistent latency during mixed read-write cycles. Adequate chassis airflow is expected to maintain rated operating temperatures.