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Data management for a data storage device using a last resort zone

  • US 9,263,088 B2
  • Filed: 06/04/2014
  • Issued: 02/16/2016
  • Est. Priority Date: 03/21/2014
  • Status: Active Grant
First Claim
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1. A data storage device (DSD) comprising:

  • non-volatile memory (NVM) media including a last resort zone associated with a higher risk of data loss or data corruption than other portions of the NVM media; and

    a controller configured to;

    assign the last resort zone to a portion of the NVM media when more than a predetermined number of defects or errors are identified in the portion of the NVM;

    reserve the last resort zone as unavailable for storing data;

    determine whether a current data storage capacity and/or an environmental condition for the NVM media has reached a threshold;

    set the last resort zone as available for storing data if it is determined that the threshold has been reached; and

    write data in the last resort zone.

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