Well for other users they might wonder WHY their data is no longer being backed up. Hell they may not even know they hit capacity until the alert. Should users

Well for other users they might wonder WHY their data is no longer being backed up. Hell they may not even know they hit capacity until the alert. Should users be able to dismiss the alert? Yes. Should the alert pop back up at a later time to remind the user that their data is still not being backed up? Yes.