Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2008-05-29
2011-11-22
Maskulinski, Michael C (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S004110, C714S004120, C714S011000, C714S013000
Reexamination Certificate
active
08065559
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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Kamath Sandeep
Raja Murali
Shetty Anil
Suganthi Josephine
Verzunov Sergey
Citrix Systems, Inc.
Foley and Lardner LLP
Maskulinski Michael C
McKenna Christopher J.
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