Modifying Quota Settings
You want to modify an existing quota template or auto-template. Modifying these items can affect new quotas that are created as well as existing quotas that are already in effect.
Using graphical user interface
To modify an existing quota template, do the following:
To modify a quota entry, do the following:
Using a command-line interface
The following command will modify a quota entry, changing the notification threshold from 90 percent to 80 percent:
> dirquota Quota Modify /Path:D:\home\* /Modify-Threshold:90,80
The major advantage of using disk quota templates and auto-quotas is automation: any time you make a change to the template or the auto-quota, this change will automatically apply to any new quotas that are derived from the template. However, the question remains of what do to with any existing quotas that have already been created, particularly if you've modified any of those quotas from the original template definition. When you modify a template definition, you have three choices regarding existing quota entries: you can modify only those entries that match the original template definition (i.e., only quota entries that haven't been modified in any way); you can choose to apply the new template settings to all quota entries that are taken from the template, losing any modifications you've made to existing entries; or you can choose to apply the template changes to only new entries, leaving any existing quota entries unchanged. Likewise, when you modify an auto-quota definition, you can choose to push those changes to all existing subfolders, to only those subfolders whose quota definitions haven't changed, or to apply the change to new subfolders only.
Recipe 9.7 for more on managing disk quota templates, Recipe 9.8 for more on defining disk quotas, and Recipe 9.9 for information on auto-quotas