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Changing dispersed storage error encoding parameters

  • US 9,501,349 B2
  • Filed: 07/21/2014
  • Issued: 11/22/2016
  • Est. Priority Date: 11/24/2009
  • Status: Active Grant
First Claim
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1. A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the method comprises:

  • maintaining, over time, a continuum of time-to-repair information regarding a plurality of storage units of the DSN;

    maintaining, over time, a continuum of time-to-failure information regarding the plurality of storage units; and

    when the continuum of time-to-repair information and the continuum of time-to-failure information are each below undesired levels;

    changing dispersed storage error encoding parameters of a logical storage vault of the DSN by lowering a decode threshold number with respect to a current decode threshold number and increasing a pillar width number with respect to a current pillar width number; and

    re-encoding stored encoded data of the logical storage vault based on the increased pillar width number and the lowered decode threshold number.

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