Configuring cluster administrative domains
In a high-availability environment, it is necessary that the application and operational environment remain consistent among the nodes that participate in high availability. Cluster administrative domain is the 
PowerHA®
implementation of environment resiliency and ensures that the operational environment remains the consistent across nodes.
- Creating a cluster administrative domain
In a high-availability solution, the cluster administrative domain provides the mechanism that keeps resources synchronized across systems and partitions within a cluster. - Adding a node to the cluster administrative domain
You can add additional nodes to a cluster administrative domain within a high-availability solution. - Starting a cluster administrative domain
Cluster administrative domains provide environment resiliency for resources within an IBM i high-availability solution. - Synchronization of monitored resource
Synchronization of monitored resources occurs when monitored resources are changed on nodes which have been defined in the cluster administrative domain. - Adding monitored resource entries
You can add a monitored resource entry (MRE) to a cluster administrative domain. Monitored resource entries define critical resources so that changes made to these resources are kept consistent across a high-availability environment.