The following changes occur when you convert a single-instance database to Oracle RAC using the rconfig utility:
During the conversion, rconfig places the target Oracle RAC database into archive log mode, and enables archiving for the database. If you do not plan to use archive log space, then you can disable archive logging after the conversion has completed.
For the Shared Storage Type value, if you enter CFS, and you use a cluster file system for your single-instance database storage, then rconfig converts the environment to use Oracle Managed Files for database storage, and places the data files in a subdirectory located under the shared storage ___location.
During the conversion, rconfig moves database files to a specified shared ___location, and configures them using Oracle Managed Files.
To avoid using Oracle Managed Files with your converted database, the single-instance database files must be located in a shared file system, and you must indicate that rconfig should not move the files.