The device performance data is only stored if you enable it using the Portal. By default, it is disabled. When activated, the necessary settings will be automatically configured on all connected Engines. It is not possible to restrict the change to a single Engine or a subset of them. Changing the parameters will not trigger a restart of the Engines.
Device performance storage management
To configure the storage policy, connect to the Portal as a central administrator. In the main navigation bar on the left, click on the administration icon and select Engines under the System configuration section.
Impact on data retention
Activating the option to store that supplementary data on the Engine will have an impact on the number of events stored on it, and thus the overall data retention. You should expect a typical impact of less than 5%. So for an Engine configured to store 200 million events, when full, up to 10 million of them could be linked to the device performance monitoring.