DFSMSrmm uses the latest expiration date of all the data sets on the volume to determine the date a volume can be released. You can change this date for a volume you own without writing to the volume again. Do this any time after the volume has been defined to DFSMSrmm and before the release date is reached.

To change the release date for a volume you own, change either the volume's retention period or its expiration date on the DFSMSrmm Change Volume Details panel. The new release date you give cannot exceed the maximum retention period set by your installation.

If you want the volume to be considered for release immediately, you can release it manually. See Releasing volumes manually for more information.