In this model, communications between Managers and Agents are relayed by Proxy Managers.
Each Agent collects performance information from their local server. The information that is collected is then passed through the Proxy Manager to the Manager where it is managed collectively.
The Proxy Manager can monitor the operation of managed services such as HTTP and DNS by regularly polling each service and confirming its response. (It substitutes for the Manager function.)
When Manager and Agent are separated by a firewall, Proxy Manager can be placed on the Agent side and used as a relay to consolidate communications and improve the security of a site.
With normal operation, one Manager can manage up to approximately 50 Agents and Proxy Managers, but the maximum number of Agents and Proxy Managers that can be managed depends on the disk performance of the Manager.
By splitting the Manager physical disk into summary data, resource data and archive files, the number of Agents that can be managed by one Manager can be extended to approximately 300.
Refer to Section "Changing the PDB/Archive File Storage Location" in the Installation Guide for details on how to split the disk.
Only "Push" operations can be used between Managers and Agents.
