Be very careful using this option. The configuration repository contains the configuration data for the whole broker domain, not just data internal to the Configuration Manager. Deleting this repository destroys all information pertinent to the broker domain, and requires you to recreate every resource within it to recover the broker domain.
If the configuration repository is not deleted as part of deleting the Configuration Manager, and the Configuration Manager is later recreated with the same name, it will continue to use the existing configuration repository.
If you do not specify –n to delete the configuration repository data, you can delete it manually later by locating the directory in which the configuration repository is stored and deleting the entire directory. This must be done with extreme caution as all domain information for the Configuration Manager is deleted.