You must specify which servers a cluster includes.
To add servers to an Essbase cluster, from Administration Services Console:
From Enterprise View or a custom view, select Essbase Servers.
From Enterprise View or a custom view, under the Provider Services node, select a provider.
Select Add Essbase Cluster, then Cluster name, and then enter a name for the cluster; for example, East Coast Sales.
Enter a short description; for example, East Coast sales databases.
In Select Cluster Component Database, specify the Essbase server, application, and database names, and then click OK.
The Essbase server and associated application and database names are displayed under the cluster component list; for example, localhost.Demo.Basic. A cluster component comprises the Essbase server, application, and database name.
The new cluster name is displayed under Essbase Clusters.