SYSTEM AND METHOD OF PROTECTING METADATA FROM NAND FLASH FAILURES

Methods and systems are disclosed for protecting metadata from NAND flash failures. With data striped across multiple flash memory chips, the flash memory multiple chips may store multiple copies of metadata (and potentially ECC). The metadata stored in the multiple copies on the flash memory chips...

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Bibliographic Details
Main Authors STONELAKE PAUL ROGER, PRINS DOUGLAS ALAN, KULKARNI ANAND KRISNAMURTHI
Format Patent
LanguageEnglish
Published 20.12.2012
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:Methods and systems are disclosed for protecting metadata from NAND flash failures. With data striped across multiple flash memory chips, the flash memory multiple chips may store multiple copies of metadata (and potentially ECC). The metadata stored in the multiple copies on the flash memory chips may be different from one another. For example, on a particular chip, a first copy of metadata is stored and a second copy of metadata is stored, with the second copy being a redundant copy of the metadata stored on a different chip. In this way, if one of the chips fails, a copy of the failed chips metadata is stored on another of the chips, and may be accessed.
Bibliography:Application Number: US201113286012