DAT

Digital Audio Tape (DAT) , generally high-quality 4mm magnetic tape in a cassette, with capacities up to over 1 Gigabyte, that has been used in the computer industry (where it is referred to as DDS) mainly as an archival and back-up medium. For CD-ROM, it is used as a transfer medium. For DVD, which deals in gigabytes, DAT has been replaced by Digital Linear Tape (DLT).

