A restore request will need a removable volume. This message is issued as soon as the server determines that the volume will be needed. A mount request will be made when the volume is actually needed for processing. When the first pass determination of needed volumes is complete, message ANR1183I will be issued. However, it is possible that additional volumes will be needed later, as indicated in the explanation for message ANR1183I. This message is not issued for DISK device class volumes nor is it issued for FILE device class volumes.