This step creates a set of mirror libraries from the primary libraries. These mirror libraries are used by the products during the upgrade process when the primary libraries are updated.

1. Select Minor Step 1, Create Mirror Libraries.
2. If necessary, use the 'A' command to adjust additional settings:
   • On the Long Parameter Data Entry screen, you can set or change the mirror libraries prefixes.
   • On the Allocation Attributes Entry screen, you can set or change the DASD/SMS allocation attributes from those used during the previous time that this step was run.

   Note:

   • All parameters in the Long Parameter Data Entry screen are mandatory. Specify values for all parameters and fix any errors in the prefix definitions before you use PF11 to proceed to the Allocation Attributes Entry screen or before you exit and save parameters.
   • For the values of the various fields, you can use the Primary library value as reference. To do so, enter '=' in the Mirror field. For prefixes, adjust the value to match the Mirror naming convention.
3. Submit the job to create the mirror libraries.
4. Press PF3 (END) to return to the Minor Steps Selection panel.