Guidelines for setting up a cluster
In WebSphere Application Server, a cluster is composed of multiple identical copies of an application server. A cluster member is a single application server in the cluster. WebSphere Portal is installed as an enterprise application server within the WAS infrastructure. All of the clustering features available within the WAS infrastructure are also available and apply to WebSphere Portal.
The deployment manager node must be installed separately before the cells and clusters can be configured.
The WebSphere Portal databases must be transferred to a supported external database, for example: DB2, Oracle, or SQL Server.
If we add a node to a cell or change a node's configuration after it is federated to the deployment manager, synchronize the node's configuration.
Before configuring an external security manager, configure the cluster first.
Parent Cluster considerations