Patent
1993-02-23
1995-06-27
Robertson, David L.
395425, 395500, G06F 924
Patent
active
054287871
ABSTRACT:
A disk drive system for use with a host processor where the host processor employs either a look ahead command set or a tag queuing command set for communicating with the disk drive system. The disk drive system comprises a first storage means for storing an optimized look ahead operating system and an optimized tag queuing operating system; a first means connected to the first storage means for initially retrieving one of the operating systems stored in the first storage means; a second storage means for storing the initial operating system retrieved by the first means; a second means for detecting the condition that a command issued by the host processor is associated with the operating system that was not initially retrieved by the first means and stored in the second means; and a third means for responding to the second means detecting the condition by retrieving the operating system that was not initially retrieved by the second means from the first storage means, for storing the newly retrieved operating system in the second storage means in place of the initially stored operating system and for transferring control to the newly stored operating system.
REFERENCES:
Walsh, Brian, Making Cents of RAID, Network Computing, Oct. 15, 1993, p. 32 (copy from DIALOG file 16).
Conner Peripherals, Inc.
Robertson David L.
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