After you install the monitoring agent in to an existing IBM® Tivoli® Monitoring environment, you must configure historical data collection if you intend to generate reports based on this data. You can configure historical data collection from within Tivoli Enterprise Portal, but consider using the command-line interface instead because it is quicker than doing it from within the Tivoli Enterprise Portal.
If you installed Tivoli Monitoring for Tivoli Storage Manager by using the standard installation method, historical data collection was configured for you automatically. If you are using the native IBM Tivoli Monitoring installer, then you must manually configure historical data collection.
You must configure history configuration to have the data from the monitored servers stored in the WAREHOUS database. This is a requirement if you plan to use Tivoli Common Reporting to view historical reports.
You can use the following steps to start data collection. In the steps, example values are used. Your selections depend on your criteria.