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Recovery from errors in a redundant array of disk drives

  • US 5,278,838 A
  • Filed: 06/18/1991
  • Issued: 01/11/1994
  • Est. Priority Date: 06/18/1991
  • Status: Expired
First Claim
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1. In a machine-effected method of rebuilding data in a redundant array of a plurality of disk drives which includes an error affected disk drive, including the machine-executed steps of:

  • detecting and indicating that a one of the disk drives is error affected;

    measuring and indicating a rate of machine operations of the array;

    establishing a rate of rebuilding data affected by the error affected disk drive which rate is predetermined inversely proportional to said measured and indicated rate of accesses;

    intermediate predetermined ones of said accesses which is in said inverse proportion, rebuilding data in a predetermined one of the disk drives for replacing data in error.

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