# Cluster Selection

Select an SLM license server in these situations:

- When adding a newly installed SLM server to an already existing SLM cluster.
- When installing an SLM client (without installing an SLM server).

In case of a server Installation.

When adding a newly installed SLM server to an already existing SLM cluster, the installation wizard runs the required commands. In addition the client configuration file `servers.xml` is prepared with the servers of the selected SLM cluster including the newly installed server.

In case of a client Installation.

When installing the SLM client components, the client configuration file servers.xml must be prepared with the servers of the selected clusters.

The dialog box consists of these items:

- Available cluster(s) and involved server(s)

  The installation wizard did a broadcast to find out which SLM servers are running. The results are displayed in this list. Click Add Cluster to extend the list of available SLM clusters. Double click any server row to list all servers of the selected cluster after which you can click Next.

  Note that a broadcast command is executed on the target installation environment. Only SLM 7.0 servers will respond to this provided they are present on the same network segment.

- Add Cluster

  - License Server: the name of an already existing and running SLM server.
  - Port: the port on which this SLM server is running.

  If both fields License Server and Port are filled, you can click Add Cluster. If you click Add Cluster, the installation wizard contacts the specified SLM server and requests to deliver the SLM cluster to which this server belongs. The cluster information is added to the list of available clusters if not already present.

- Selected cluster and involved server(s)

  Precisely one SLM cluster must be selected. A selection can be replaced by another cluster by double clicking a row in the list of Available Clusters. Selecting the same cluster does not change the selection. Selecting another cluster removes all servers of the currently selected cluster and inserts all servers of the newly selected cluster.

Note: Client only installations always imply that automatic client update is enabled. When this is not appropriate, the client update mechanism can be manually disabled. On the installed machine, you can run this command: SlmConfig –update disableClient.