A CA Identity Manager implementation may span a multi-tiered environment that includes a combination of hardware and software, including three tiers:
Each tier may contain a cluster of servers that perform the same function to share the workload for that tier. You configure each cluster separately, so that you can add servers only where they are needed. For example, in a clustered CA Identity Manager implementation, a group of several systems may all have a CA Identity Manager Server installed. These systems share the work that CA Identity Manager Server has performed.
Note: Nodes from different clusters may exist on the same system. For example, an application server node can be installed on the same system as a Policy Server node.
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