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METHOD AND APPARATUS FOR REBUILDING DATA IN A DISPERSED DATA STORAGE NETWORK

  • US 20130275844A1
  • Filed: 06/10/2013
  • Published: 10/17/2013
  • Est. Priority Date: 09/30/2005
  • Status: Active Grant
First Claim
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1. A method for execution by one or more computers associated with a dispersed data storage network, the method comprises:

  • determining that a disk drive of a slice server has been replaced with a new disk drive;

    identifying a data slice that was stored on the disk drive;

    identifying a data segment based on the identified data slice, wherein the data segment was encoded in accordance with an information dispersal function to produce a set of data slices, which includes the identified data slice;

    identifying one or more other slice servers that are storing other data slices of the set of data slices;

    retrieving, from the one or more other slice servers, a sufficient number of the other data slices to reconstruct the data segment;

    decoding the sufficient number of the other data slices in accordance with the information dispersal function to reconstruct the data segment;

    encoding the reconstructed data segment in accordance with the information dispersal algorithm to produce a new set of data slices; and

    selecting a data slice of the new set of data slices as a rebuilt data slice of the identified data slice.

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