# Volume Space Release dialog box

You use this dialog box to issue the DFSMSdss RELEASE command to release allocated but unused space from all data sets on the selected volumes. To learn about the standard capabilities of a dialog box, see Standard tabs in the dialog boxes of the Storage Toolkit. The topic includes a link to the Reference guides for commands that are used in the Storage Toolkit.

The following parameters are available:

- Minimum secondary allocation for release (n number of tracks, where n ranges from 0 to 99999999)
- Minimum unused space prior to release (n number of tracks, where n ranges from 0 to 99999999)
- Wait time in seconds between retry attempts (n seconds, where n ranges from 0 to 255)
- Number of attempts allowed to obtain volume access (n tries, where n ranges from 0 to 99)
- A fully-qualified data set name or pattern for data sets that you want to exclude from the space release operation. Use the Fully Qualified Dataset Name or Pattern table to manually enter data set names or DSN patterns.