Array disk apparatus with unsuccessful reconstruction indicating

Details Array disk apparatus with unsuccessful reconstruction indicating Array disk apparatus with unsuccessful reconstruction indicating

1991-02-15

1993-10-12

Beausoliel, Jr., Robert W.

Excavating

H03M 1300

Patent

active

052532569

ABSTRACT:
An array disk apparatus capable of identifying locations where data reconstruction has failed. The apparatus comprises a disk controller containing a data reconstructing unit, a "reconstruction unsuccessful" information generating unit and a "reconstruction unsuccessful" information storing unit. The data reconstructing unit reconstructs lost data based on the data from the magnetic disk units other than the failed and repaired unit and on parity data associated with the data. The "reconstruction unsuccessful" information generating unit generates "reconstruction unsuccessful" information if another magnetic disk unit develops a read error during a data reconstruction process. The "reconstruction unsuccessful" data storing unit stores the "reconstruction unsuccessful" information to the failed magnetic disk unit after the repair thereof.

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patent: 4989205 (1991-01-01), Dunphy, Jr. et al.
patent: 4989206 (1991-01-01), Dunphy, Jr. et al.
patent: 5077736 (1991-12-01), Dunphy, Jr. et al.

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