Systems and methods for load balancing via a plurality of virtual servers upon failover using metrics from a backup virtual server
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United States of America Patent
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Nov 22, 2011
Grant Date -
Dec 3, 2009
app pub date -
May 29, 2008
filing date -
May 29, 2008
priority date (Note) -
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Abstract
The present invention provides methods and systems for performing load balancing via a plurality of virtual servers upon a failover using metrics from a backup virtual server. The methods and systems described herein provide systems and methods for an appliance detecting that a first virtual server of a plurality of virtual servers having one or more backup virtual servers load balanced by an appliance is not available, identifying at least a first backup virtual server of a one or more backup virtual servers of the first virtual server is available, maintaining a status of the first virtual server as available in response to the identification, obtaining one or more metrics from the first backup virtual server of a one or more backup virtual servers, and determining the load across the plurality of virtual servers using the metrics obtained from the first backup virtual server associated with the first virtual server.
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