You can set how long both the resources usage statistics and events history will be stored in the Parallels Business Automation - Standard database in the Configuration Director - Miscellaneous Settings - Data Retention. The resource usage statistics retention cycle defines the timeframe for resource usage reports you can view.
The outdated statistics is removed automatically, once a day. In addition, at any moment you can manually remove the outdated statistics (use the Tasks tab on the Data Retention screen).
In respect to the resource usage statistics, you can set:
In respect to the action log, events history, and sent e-mail notifications you can set the period to store the data.