Storage area network system
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United States of America Patent
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Aug 17, 2010
Grant Date -
May 29, 2008
app pub date -
Jul 3, 2007
filing date -
Jul 4, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A storage network includes a path processor for directing data onto one of two or more paths between an application host and two or more storage controllers in a storage subsystem. To determine a data path within the storage network, the operational status of a storage controller in the storage subsystem is monitored. It is determined whether a change in the operational status of the storage controller is a failure or a potential failure. This determination is sent to the path processor. The path processor redirects application host data from the path controller on the basis of the determination.
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