The Base Instances tab lists the currently configured logical cluster instances.
Select Add to add instances to the logical cluster.
To remove an instance from the logical cluster:
Highlight the instance to remove. This instance must be offline before you can select it.
Select Remove.
Select Yes to confirm the deletion.
Select Offline to bring an instance offline. You can specify whether to bring the instance offline immediately, or to bring it offline gradually, but to remind you after the specified period of time.
Select Online to bring an offline instance online.
Select Failover to fail over from this instance to another.
To add an instance to the logical cluster:
Click Add.
Highlight the instance you want to add
Click OK. These changes do not take effect until you click Apply or OK.