| CPC G06F 3/0616 (2013.01) [G06F 3/0634 (2013.01); G06F 3/0688 (2013.01)] | 20 Claims |
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1. A method of managing storage devices, the method comprising:
obtaining a wear level metric of a candidate storage extent that includes storage locations from multiple storage devices, the wear level metric indicating an amount of wear of the candidate storage extent;
performing an assessment operation that provides an indication that the candidate storage extent satisfies an access criterion, the access criterion being based on the wear level metric; and
in response to the assessment operation providing the indication that the candidate storage extent satisfies the access criterion, performing a set of access operations that accesses the candidate storage extent;
wherein the candidate storage extent is included in a plurality of storage extents;
wherein the wear level metric is an average amount of consumed program/erase (P/E) cycles for the storage locations in the candidate storage extent over total P/E cycles that the storage locations are estimated to withstand;
wherein the access criterion is the average amount being below a predefined wear level threshold; and
wherein the method further comprises:
prior to performing the assessment operation, detecting that available write bandwidth has fallen below a predefined available write bandwidth threshold; and
in response to detecting that the available write bandwidth has fallen below the predefined available write bandwidth threshold, increasing the predefined wear level threshold to increase a number of storage extents of the plurality of storage extents that have respective wear level metrics below the predefined wear level threshold.
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