This step switches internal references and prefixes from the primary to the mirror set of libraries. After the switch, address spaces and jobs of this IOA environment start using the mirror libraries instead of the primary libraries.

1. Select Minor Step 2, Switch to Mirror Libraries.
2. Use the 'S' command to perform the switch.

   After a successful switch, the status changes from yellow 'PRIMARY' to green 'MIRROR'.

3. Press PF3 (END) to return to the Minor Steps Selection panel.