Method for storing data using globally distributed storage system, and program and storage medium for allowing computer to realize the method, and control apparatus in globally distributed storage system
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United States of America Patent
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Issued Date -
Apr 1, 2004
app pub date -
Sep 22, 2003
filing date -
Sep 30, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A control device for preparing redundant data, dividing the data into a plurality of volumes, and distributing and storing volumes in a plurality of storage units scattered through a network includes a route management unit and a storage set management unit. The route management unit computes an evaluation value indicating the preferability of a use target on each of the scattered storage unit based on the bandwidth, the communications cost, the physical distance between a node requesting a write and a storage unit. The storage set management unit selects a plurality of storage units as the optimum storage set from among the above mentioned scattered storage units based on the evaluation value.
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