Question Rephrased:
On our NAS, I have 3 LUNS created (I do not know if this is the cause of the problem).
On my DC, I have attached them using iScsi, and have created them as a disk. On that Disk I created folders so my users can access and use.
For each folder, the Sharing settings are for Everyone: R/W
After some time (noticed more after reboots) everyone looses access to the drives. What I need to do in order to bring it back is: Check the checkbox for: Do not share this folder. Press OK. And than check the : Share this folder. This I need to do for every folder on the drive.
The security settings I have are for Authenticated Users full control.
Why is it happening?