Read checking for drive rebuild

Details Read checking for drive rebuild Read checking for drive rebuild

1997-06-23

1999-10-05

Palys, Joseph E.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

G06F 1100

Patent

active

059616520

ABSTRACT:
A new and improved apparatus and method for rebuilding a replacement disk of a fault tolerant, mass storage drive array subsystem of a computer system. The method calls for a microprocessor to check a stripe for consistency. If the stripe is inconsistent, the microprocessor rebuilds a predetermined number of stripes. If the checked stripe is inconsistent, then the microprocessor checks a next stripe and repeats the above-described process. Because the drive array subsystem receives both system requests and rebuild requests, the present invention allows a user to select the drive array subsystem's priority in processing system requests versus rebuild requests, thereby allowing greater system access to the drive array subsystem during peak times of system requests.

REFERENCES:
patent: 5101492 (1992-03-01), Schultz
patent: 5305326 (1994-04-01), Solomon et al.
patent: 5390187 (1995-02-01), Stallmo
patent: 5390327 (1995-02-01), Lubbers et al.
patent: 5504858 (1996-04-01), Ellis et al.
patent: 5522032 (1996-05-01), Franazszek et al.

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