You can use the recall exit (ARCRDEXT) to select a recall target volume from a pool of primary volumes you have identified, or you can use it to select the recall target volume from the general volume pool. You can also write the exit to select volumes in a different order from that of recall target volumes provided by the system. The system returns a maximum of five recall target volumes to the exit.

This exit is called only for non-system-managed data sets. In a common recall queue environment, this exit is invoked only by the processing host.