Maintaining data-set coherency in non-volatile memory across power interruptions
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United States of America Patent
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Dec 21, 2015
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Dec 23, 2014
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Abstract
A method for data storage includes storing data in a set of memory blocks of a non-volatile memory. Each memory block, which holds a respective portion of the data, is classified as valid or invalid depending on whether the memory block holds a most updated version of the portion, and as anchor or non-anchor depending on whether the portion belongs to a coherent snapshot of the data. Upon recovering from a power interruption, the coherent snapshot of the data is reconstructed from the memory blocks, based on classification of the memory blocks as valid or invalid and as anchor or non-anchor.
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