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SYSTEM AND METHOD FOR EFFICIENT FLASH TRANSLATION LAYER

  • US 20150149706A1
  • Filed: 09/09/2014
  • Published: 05/28/2015
  • Est. Priority Date: 11/27/2013
  • Status: Active Grant
First Claim
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1. A method of maintaining and updating a logical-to-physical (LtoP) table in a storage device comprising a processor, a volatile memory, and a non-volatile memory, the storage device being in communication with a host, the method comprising:

  • receiving, by the processor, data for storing at a physical address in the non-volatile memory, the data being associated with a logical address of the host;

    storing, by the processor, the physical address in a first LtoP zone of a plurality of LtoP zones of the LtoP table, the LtoP table being stored in the volatile memory;

    adding, by the processor, the first LtoP zone to a list of modified zones;

    storing, by the processor, a second LtoP zone of the plurality of LtoP zones in the non-volatile memory when a size of the list of modified zones exceeds a threshold; and

    after the receiving of the data, storing, by the processor, the data at a physical address in the non-volatile memory,wherein at least one physical address is stored in each LtoP zone of the plurality of LtoP zones.

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