Topic List

Click a topic to learn more.


Term of the Moment

hard drive capacity


Look Up Another Term


Definition: DASD


(Direct Access Storage Device) Pronounced "daz-dee," a DASD is an earlier mainframe term for a magnetic disk drive. Today, a DASD can also be a solid state drive (SSD). The "direct access" means that any sector is addressable directly. See hard drive and SSD.