Planning the cluster

You can add Web servers to an existing cluster, use existing servers in a cluster as Web servers, or create a cluster for Web traffic only. You plan the cluster by considering the same factors you consider when you create any IBM® Lotus® Domino® cluster. For example, you should consider the processing power of the servers available and how much traffic there will be in the cluster. If there is a lot of Web traffic on a server, you should consider dedicating the server to Web traffic only. You should also distribute databases in a way that balances the workload.

In general, you should consider the following factors:

• The number of servers to include in the cluster
• The number and placement of replicas in the cluster
• How to distribute databases across servers
• Whether to create a private LAN for cluster traffic
• Where to locate the ICM

You can run the ICM on a server in the cluster or on a server outside the cluster. In addition, you can run multiple ICMs to be sure that one ICM is available at all times.

You can configure the ICM in several ways. For example you can:

• Configure a single ICM and place it outside the cluster
• Configure multiple ICMs outside the cluster
• Configure a single ICM as part of the cluster
• Configure multiple ICMs as part of the cluster
• Configure one ICM outside the cluster and one inside the cluster

Related topics

Planning a cluster
Determining how many servers to include in a cluster
Determining the number and placement of replicas in a cluster
Distributing databases in a cluster
Determining whether to create a private LAN for your cluster
Example of a single ICM outside the cluster
Example of multiple ICMs outside the cluster
Example of a single ICM inside the cluster
Example of multiple ICMs inside the cluster
Example of one ICM outside the cluster and one ICM inside the cluster

Glossary