Dynamic groups update automatically every hour, but you can force an update between cycles to reflect any changes to the library contents.

1. In the left navigation, expand Setup & Administration, select Logical Groups.
2. Select a dynamic group from the list, and then click Refresh Dynamic Group .
   
3. STA begins updating the group in the background. Click Refresh Table to update the in-progress drive and media counts.

   Depending on the size of your tape library system and the complexity of the selection criteria, it may take several minutes to add all drives and media to the group. Leaving the Logical Groups screen does not interrupt this process.