A computer installation is programmed for storing data in a magnetic disk DASD (direct access storage device) in the form of a track number identified by DASD cylinder number (CC) and DASD head number (HH). A re-writable, multi-disk optical storage which stores information in a fixed-block architecture...http://www.google.com.au/patents/US5465382?utm_source=gb-gplus-sharePatent US5465382 - System and method for mapping directly accessible magnetic DASD storage to fixed block optical storage
