This product is either discontinued or we cannot get that from suppliers.
Dell 400-AHID Hot-Plug Drive, Capacity 8tb, Interface Sata-6gbps, Buffer 128 Mb, Data Transfer Rate 600 Mbps, Interface 1 X Sata 6 Gb/s, Compatible Bays 1 X Hot-swap - 3.5, Spindle Speed 7200 Rpm.
Dell 400-ahid 8tb 7200rpm Sata-6gbps 512e 128mb Buffer 3.5inch Hard Drive With Tray For Poweredge Server.