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SLC-MLC COMBINATION FLASH STORAGE DEVICE

  • US 20090327591A1
  • Filed: 06/25/2009
  • Published: 12/31/2009
  • Est. Priority Date: 06/25/2008
  • Status: Active Grant
First Claim
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1. A method of storing data in a flash storage device comprising SLC and MLC flash memory, the method comprising the steps of:

  • mapping one or more logical data blocks to a physical address of one or more channels of non-volatile memory including SLC and MLC flash memory;

    writing the one or more logical data blocks to a physical address of the non-volatile memory;

    erasing data blocks from the one or more memory channels;

    creating a list of one or more metrics associated with the erasing data blocks; and

    rewriting the one or more logical blocks to a physical address of the non-volatile memory based on the one or more metrics.

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