By specifying a list of volume serial numbers (VOLUMES=<vsn>) the user can define the volumes.
On the console, the operator receives a request to assign volumes in the following cases:
VOLUMES=*FROM-OPERATOR was specified.
The archive’s volume pool is exhausted and no further volumes can be taken from it.
Both the volumes allocated by the operator and those explicitly requested by the user but not present in the pool are listed in the directory. They are displayed with //SHOW-ARCHIVE SELECT=*VOLUMES with the specification OWNER= OPERATOR.
Once the save file stored on these volumes has been deleted, the entries for these volumes are deleted from the directory (even with FORCED-DELETE). The volumes are not included in the volume pool.
When MAREN is used these volumes must already be allocated to the user ID (STATUS=RESERVED). They are then administered by MAREN.