From the sounds of it the problem may be on the RAID. Check your RAID status and admin logs, guessing here; but I would be willing to bet that the RAID is stopped. This is possibly due to HDD failure and RAID running degraded for an extended period. If you not sure what to look for just download all the logs and post the tar.gz file or just call the Small Business Center and they should be able to assist you.
In the meantime i figgered out what the problem was: I deactivated Netbios on the client side and that stopped them from accessing the NAS.
The funny thing is (see the attached log-file) that the message mentioned in the topic still shows up in the log-file.
As said in my initial posting, everything else lools perfect in the web-interface, all shares and volumes are up and unlocked, RAID Status is ok, all disks are healthy (It's a 3-disk RAID 5 with a 4th disk as a hot spare)
All lights on the front of the NAS are green, nothing is flashing. I`m just worrying if I will loose my data in the near future or what this message means.
I enclosed an older log file as well with some interesting messages like "can't find mount point" and other messages.
I'm just worried about future problems as I don`t want to loose any of the data stored on the disks.
Article ID:1717 Time Machine Backup on NSS300 Smart Storage Series
Objective This document explains the steps for Time Machine Backup. The
Network Attached Storage (NAS) is used as one of the destinations for
the backup of files. It is a file-level comput...
Article ID:28 Basic and Advanced System Reset on NSS300 Series Smart
Storage Objective The NSS devices have two types of System Resets: Basic
and Advanced. An understanding of both of these resets will allow the
user to recover from unpredictable situatio...
Article ID:40 Expansion of Disk Capacity of RAID 5 on the NSS300 Series
(Except NSS322) Objective RAID stands for Redundant Array of Independent
Disks. RAID 5 combines three or more disks in a way that shields the
data against loss of any one disk. In a R...