Virtual shared disks with application transparent recovery
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United States of America Patent
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Sep 16, 1997
Grant Date -
N/A
app pub date -
May 24, 1996
filing date -
Oct 31, 1994
priority date (Note) -
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Abstract
A system and method for recovering from failures in the disk access path of a clustered computing system. Each node of the clustered computing system is provided with proxy software for handling physical disk access requests from applications executing on the node and for directing the disk access requests to an appropriate server to which the disk is physically attached. The proxy software on each node maintains state information for all pending requests originating from that node. In response to detection of a failure along the disk access path, the proxy software on all of the nodes directs all further requests for disk access to a secondary node physically attached to the same disk.
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