Thank you for your answer!
I know that I bought a very very cheap device; its my third-device (two others are Synology).
I bought this cheap device because the only think that it should do is saving pictures from a Surveillance Cam (only pictures).
Since I am not very new to NAS, it is very difficult to configure the device.
Network settings I made get lost (I donīt know why) so that from one second to the other FTP oder NFS are disabled therefore saving isnīt possible anymore (depends Management --> "Network Share Settings") Right now i turne every Network-Option ON, and when I klick finish NFS is still OFF.........
I also searched for changing the Port (...from default 80 to xxxxx).
Uhh and now, when I log-in ... after a couple of seconds the screen: "Step 5: Formatting Hard Drives" appears

... strange
Beside that there are some other not so important things.
I think the two points I described can be solved with a Firmware Update (maybe), this is why I asked.
But over all, I know that the DNS320 is one of the very cheap devices so Iīm not yet unsatisfied.
...oh I forgot: the web-Interface doesnt work with Internet Explorer (desktop-pc and Laptop tested), Firefox is no problem