I think this is the setting for a Domino Cluster....
Deleting databases from a cluster
To minimize disruption to users, you can set a database to be deleted after every active user has finished using the database. To do this, you mark the database as "pending delete." When a database is pending delete, the database does not accept any new database open requests. After all users have closed the database, Domino pushes changes to another replica and then deletes the database. You should mark a database "pending delete" if you plan to remove a database that is obsolete or if you are copying the database from one server to another and want to delete the database from the original server.
1. In the Server pane of the Domino Administrator or the Web Administrator, expand All Servers or expand Clusters.
2. Select the server that contains the database you want to delete.
3. Click the Files tab.
4. Do one of the following:
+ In the Task pane of the Domino Administrator or the Web Administrator, select the folder or view that contains the database you want.
+ In the Task pane of the Domino Administrator only, expand Cluster Directory (6), and then select the view you want.
The Databases by Filename view is a convenient view from which to delete replicas, especially if you want to delete multiple replicas of a database from the cluster.
The Databases by Server view is also convenient, especially if you want to delete multiple databases from a particular server.
5. In the Results pane, select the database or databases you want.
6. In the Tools pane, expand Database, and then click Cluster.
7. Click "Pending delete," and then click OK.