VIRTUAL LIBRARY CONTROLLER AND CONTROL METHOD
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United States of America Patent
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Issued Date -
Nov 6, 2014
app pub date -
Apr 23, 2014
filing date -
May 2, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A virtual library controller includes: a substitution logical volume creation unit to create, in a case that a logical volume subject to an instruction to write data from a superior device is not present in a cache disk, a substitution logical volume in the cache disk; and a write process unit to carry out write of the data in the created substitution logical volume.
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