Fail-over switching system
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United States of America Patent
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Oct 3, 2000
Issued Date -
N/A
app pub date -
Jun 26, 1998
filing date -
Nov 14, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A recovery method for use in a data storage system in which a plurality of data storage devices are connected to each of two communication paths. A switch may route requests to either of the two communication paths. With one data storage controller in communication with the data storage devices over a first path and a second data storage controller in communication with the data storage devices over a second path, upon detection of a malfunction on the first path, a data storage controller may request access to the other path. Thereafter, the controller may be switched into connection with the remaining operable path so as to share that path with the other controller.
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