Sun Java System Application Server Enterprise Edition 8.2 Upgrade and Migration Guide

Upgrade of Clusters

While upgrading a configuration containing clusters inApplication Server 7.x, specify one or more cluster files or the clinstance.conf files. In Application Server 8.x, the clusters are defined in the domain.xml file and there is no need to specify separate clusters. Another notable difference is that in Application Server 8.x, all the instances within a cluster reside within the same domain and therefore, in the same domain.xml file. In Application Server 7.x, the instance forming a cluster could span more than one domain.