The Inventory pages enable you to view all currently monitored assets and delete assets which are no longer monitored or no longer present. It is also useful for debugging problems with your setup. The information in the Inventory page is read from the repository's Inventory schema, where all information about the current and historical assets is stored.
Historical assets are assets which were once monitored but are no longer used, such as servers which used to host MySQL instances but were decomissioned, or repurposed. These persist in the repository's Inventory schema and are displayed in the MySQL Enterprise Monitor User Interface even though they are no longer used.
Current assets are assets which are active and currently monitored.