I also found out today that our Fileservers don't run backups.
Yep.
From what our consultant explained to me today, that because of the large size of our file servers drives (almost 2 TB) we don't run backups on them and VSS has been disabled. We only run DFS replication. So all of this users information and everything in their department share has been lost.
On the bright side, we now have the perfect opportunity to re-structure our local file shares so that we can back them up and to also create an actual DR policy.