The two most popular type of clusters in WebSphere are static clusters and dynamic clusters. Both a static cluster and dynamic cluster are the same in that the cluster is a collection of one or more WebSphere application servers.
A dynamic cluster contains features that are not available in a static cluster:
Refer to this article for the steps on how to create a dynamic cluster. If you still want to create a static cluster, read on.
Vertical cluster vs. Horizontal cluster
Before creating a static or dynamic cluster, you'll want to understand the benefits and drawbacks of a vertical cluster and horizonal cluster.
Create a new static cluster
Refer to this article for the steps on how to create a new static cluster. In this example, cluster1 contains two application servers, server1 and server2.