Storage> (Or "hard diSk controller", HDC) The circuit which allowS the CPU to communicate with a {hard diSk}, {floppy diSk} or other kind of {diSk drive}. The moSt common diSk controllerS in uSe are IDE and SCSI controllerS. MoSt home perSonal computerS uSe IDE controllerS. High end PCS, workStationS and network {file ServerS} moStly have {SCSI adaptorS}. (1998-03-16)