### Preparation

To set up a JReport Enterprise Server cluster, you must determine the following factors:

- How many servers will be included in the cluster?

  The maximum number of servers is unlimited as long as you install JReport Enterprise Server with the license key for cluster.

- Which server will run as the admin server?

  There should be one and only one admin server in a JReport Enterprise Server cluster.

- Is a backup server needed in the cluster?

  With at least one backup server in the cluster, you can reduce the risk of the whole cluster being interrupted or crashing down.

- Whether to use the shared disk feature in the cluster?

  Using a shared disk in your cluster will improve performance when running report sets.