Deploying supported changes in a clustered environment

Guidewire provides a way to deploy supported changes to individual production servers in a PolicyCenter cluster. Guidewire calls this type of deployment a rolling upgrade, in the sense that upgrade changes move through the cluster, one server instance at a time. This type of deployment is in contrast to a full database and application upgrade. A full upgrade requires that you bring down all PolicyCenter production servers in the cluster to complete the upgrade. A rolling upgrade allows you make certain changes on a server by server basis without bringing down the entire production cluster to make the changes.