Wie sichere ich Daten von einem QNAP NAS System?
You will always get a warning that an agent is not installed when trying to do share level backups from NAS devices - this warning cannot be disabled. However you should stil be able to backup, if you cannot backup then something is blocking the login between the media server and the NAS. Note: you do also need an Agent for Windows license against each NAS beineg backed up over shares.
The easisest way to configure network storage so that logons are easy to mange for backups is an iSCSI connection - OK I can already see you are not configured for iSCSI and that it would obviously need an environmental rethink to do such a thing (assuming the QNAP can do it)
So accepting the iSCSI is not an option the next suggestion is make sure the QNAP security model is configured to be linked to the same domain the Backup Exec Server is a member of (this would then make it easy to assign full permisssion to the BE Service Account User, System Logon Account and resource account specified in the job, which could all be the same account if you want. If you have to use a workgroup setup then only defining the resource account should work but this is typically the most commen scenario that for whatever reason gives a logon problem and should be avoided if possible
After this if you still cannot connect during a backup job, it does get trickier as it the issue is almost certainly outside of Backup Exec (unless you are using the wrong logon) and something to do with the environment. Probably something like the NTLM challenge response settings between the Operating System of the Backup Exec Server and the NAS device which is blocking the connection. You would start by making sure that if you login to the console of the operating system of the Backup Exec server that you can connect to the shares on the NAS (if you can't - fix this first) If you can then this does not mean you don't have an NTLM isue as NTLM can be different between a console session and a background process/service level session. You will need to lookup how best to adjust NTLM by looking at information from Microsoft (or other websites)
