HD 4.0T 722N IS12 3.5 H-AK EC

The Dell X4FKY is a 4 TB Nearline SAS hard drive for server storage. Its 3.5-inch form factor and hot-plug capability suit server storage configurations designed for this drive format.

It spins at 7,200 RPM and connects through a 12 Gbps SAS interface. The listing also specifies a 128 MB buffer and 512n format, providing key details for identifying this particular drive.

The listing names Dell PowerEdge C6420, R640, R740 and R740xd servers as compatible systems. It also identifies HUS726040ALS210 as the Hitachi drive reference associated with X4FKY.