System and method for mapping directly accessible magnetic DASD

Details System and method for mapping directly accessible magnetic DASD System and method for mapping directly accessible magnetic DASD

1994-07-15

1995-11-07

Coleman, Eric

Boots, shoes, and leggings

395439, 395412, 364243, 3642551, 364DIG1, G06F 1202

Patent

active

054653827

ABSTRACT:
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 including a sequence of sectors having the form of spirals on optical disk surfaces is enabled to emulate magnetic DASD by calculation-based conversion of storage references to magnetic DASD tracks to fixed-block optical sectors.

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