Patent ID: 8065559
Filing Date: 2011-11-22
Classification: G06F,H04L

Abstract:
1. A method of performing load balancing via a plurality of virtual servers upon a failover using metrics from a backup virtual server, the method comprising the steps of: (a) detecting, by an appliance executing a first virtual server, that the first virtual server of a plurality of virtual servers load balanced by the appliance is not available, the first virtual server having one or more backup virtual servers; (b) identifying, by the appliance, that at least a first backup virtual server executing on the appliance of a one or more backup virtual servers of the first virtual server is available; (c) maintaining, by the appliance, a status of the first virtual server as available in response to the identification; (d) obtaining, by the appliance, one or more metrics from the first backup virtual server of a one or more backup virtual servers; and (e) determining, by the appliance, the load across the plurality of virtual servers using the metrics obtained from the first backup virtual server associated with the first virtual server.