Updating data stored in a dispersed storage network
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United States of America Patent
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Jul 15, 2014
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N/A
app pub date -
Aug 17, 2012
filing date -
Oct 4, 2011
priority date (Note) -
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Abstract
A method begins by a dispersed storage (DS) processing module receiving a modified data object, wherein the modified data object is a modified version of a data object and the data object is divided into a plurality of data segments and stored in the DSN. The method continues with the DS processing module mapping portions of the modified data object to the plurality of data segments that includes creating a middle data segment of a second plurality of data segments based on a corresponding middle data segment of the plurality of data segments when a portion of the portions corresponds to middle data of the modified data object. The method continues with the DS processing module encoding the middle data segment using a dispersed storage error coding function to produce an encoded data segment and overwriting the corresponding middle data segment with the encoded data segment in the DSN.
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