You can use Xsan Admin to delete a group.
Note: These instructions apply only if, during initial SAN setup, you chose to use Xsan
Admin to manage users and groups. If you have a different directory configuration,
use the management software for your directory to delete group accounts.
To delete a group:
In Xsan Admin, select Users and Groups in the SAN Assets list.
Select the group in the list and choose Delete User or Group from the Action (gear)