Perform the following steps to set up the PAV option in existing storage classes:
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Example: ACTIVATE SCDS dsname
Example: SETSMS SCDS dsname
Result: The PAV option is enabled for this storage class.
Recommendation: When you modify an existing storage class and activate the configuration, you are implicitly modifying the volume selection process for all data sets to which this storage class is assigned. If you do not want the "modified" storage class to apply to all data sets that it is being assigned to, you will need to change the storage class ACS routines.