This is a small form factor(SFF) drive, to be used in the DF-F800-RKAKS.P 24 drive expansion frame, in the AMS2000 series.
The drive is a 300GB/10k SAS drive.
Hitachi Data Systems Feature code is DF-F800-AMF300.P
Part Number is: #3282389-C
Inserting one of these drives into the RKAKS expansion frame, increases the available storage by 300GB.