Creating a separate cluster for the Service Policy Manager is optional.
The Service Policy Manager cluster is created on WebSphere Application Server Network Deployment, version 6.1.0.29 or 7.0.0.7. It can share the TWSSDB database instance with the Access Gateway cluster if desired.
If possible, use the default profiles for WebSphere Application Server Network Deployment. Also, avoid customizing the profile with the Profile Management Tool. If you need to use an advanced profile, do not select the for development profile. Doing so can cause problems with the WebSphere Application Server SIP container.
After you have installed the prerequisite software, you must federate the application server nodes into the deployment manager. Then, you can create the cluster using the Integrated Solutions Console. You can create the first cluster member from one of the application servers you federated into the deployment manager. After you have created each application server, you must add each application server to the network deployment manager cell. Additional cluster members can be added using the Integrated Solutions Console at a later time, as needed.