Method and apparatus for recovering data
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United States of America Patent
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May 29, 2018
Issued Date -
N/A
app pub date -
Mar 5, 2015
filing date -
Nov 21, 2012
priority date (Note) -
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Abstract
In a data recovery method, there are a server and a plurality of storage devices each storing a copy of a data block. The server divides each copy of the data block into N segments corresponding to a sequence of N partitions. And then, the server constructs a plurality of different trial data blocks each including N segments corresponding to the sequence of N partitions. After that, the server calculates a check code for each trial data block, and continues to identify a trial data block having a check code identical to a pre-stored standard check code of the data block. At last, the server replaces at least one of the copies of the data block with the identified trial data block having the check code identical to the pre-stored standard check code.
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