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Method and system for improving flash storage utilization by predicting bad M-pages

  • US 10,339,001 B2
  • Filed: 05/25/2017
  • Issued: 07/02/2019
  • Est. Priority Date: 09/30/2014
  • Status: Active Grant
First Claim
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1. A method for managing persistent storage, the method comprising:

  • issuing, by a control module, a proactive read request to a page in the persistent storage;

    receiving, in response to the proactive read request, a bit error value (BEV) for data stored on the page, wherein the BEV is based on a number of incorrect bits in the data;

    obtaining, by the control module and based on at least one parameter associated with the page, a BEV threshold (T); and

    based a determination that the BEV is greater than T, setting an m-page as non-allocatable for future operations, wherein the m-page is a set of pages in the persistent storage and the page is in the set of pages.

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