Identity Servers and Access Gateway systems provide APIs to retrieve the statistics of that system. These are precursors to the Administration API and provide statistics. Both APIs provide the same data, but the difference is in the invocation point. The Component statistics API can be called for each device IP and the Administration API can be called for Administration Console to retrieve statistics of all Identity Servers and Access Gateways in the system. Therefore, it is recommended to use the Administration APIs.
For more information, see Component Statistics Through REST APIs in the NetIQ Access Manager 5.0 Administration Guide.