Changing dispersed storage error encoding parameters

摘要

A method begins with a processing module of a dispersed storage network (DSN) maintaining, over time, a continuum of time-to-repair information regarding a plurality of storage units of the DSN and maintaining, over time, a continuum of time-to-failure information regarding the plurality of storage units. When the continuum of time-to-repair information and the continuum of time-to-failure information are each below undesired levels, the method continues with the processing module 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. The method continues with the processing module re-encoding stored encoded data of the logical storage vault based on the increased pillar width number and the decreased decode threshold number.

主权项

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