On-line module replacement in a multiple module data processing

Details On-line module replacement in a multiple module data processing On-line module replacement in a multiple module data processing

1992-03-06

1994-12-06

Beausoliel, Jr., Robert W.

Excavating

371 101, 371 91, G06F 1100

Patent

active

053717430

ABSTRACT:
A method for providing on-line replacement of a module which is at a specified position in an array of modules connected to a common control processor so that all other modules in the array can continue operating during the replacement operation. When the module is removed an indication is provided to the control processor showing that removal has occurred and identifying the position thereof. When the replacement has occurred an indication thereof is provided to the control processor, the replacement module is tested, and the state of the replacement module is updated to place it in the same state it would have been in if it had not been replaced.

REFERENCES:
patent: 4761785 (1988-08-01), Clark et al.
patent: 5081626 (1992-01-01), Scott
Patterson et al., "A case for Redundant Arrays of Inexpensive Disks" (RAID) University of California, Berkely, Calif., undated, pp. 1-24.
NCR Disk Array Controller-Application Notes, No. 5, Dec. 16, 1991, pp. 1-2.
J. L. McCleklan, "Multiple Small Disk Memory Subsystem" Mar., 1991 (one page).

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