Selecting storage units in a dispersed storage network
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United States of America Patent
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Aug 8, 2017
Issued Date -
N/A
app pub date -
Feb 29, 2016
filing date -
Dec 29, 2009
priority date (Note) -
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Abstract
A method begins by a processing module of a dispersed storage network (DSN) receiving, from a requesting device, a request to retrieve a unique copy of a data file, where the data file is divided into a plurality of data segments, where a data segment is dispersed storage error encoded to produce a set of encoded data slices, and where the plurality of sets of encoded data slices is stored in a set of storage units of the DSN. The method continues with the processing module determining a retrieval combination code from the request and interpreting the retrieval combination code to identify a sub-set of storage units. The method continues with the processing module sending read requests to the sub-set of storage units and when the decode threshold number of encoded data slices is received, decoding the decode threshold number of encoded data slices to recover the data segment.
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