Hi,
my NAS with OMV 1.19 has been running for a few years without any issues. The last few month however now and again something would go wrong. Sometimes i would watch something of the NAS and after a few hours there would be an error, or would dump 50GB on the NAS and after for example 70% there would be a "transmission" error. In case of an error the affected filesystem would go into "resync" --> 8 hours --> "active" --> 8 hours --> "clean" and i can use it again.
I don't think there is anything wrong with my pc, because usb harddrives work perfectly and there is nothing else wrong with my pc.
I also don't think there is something wrong with my network. It is really simple and everything else works fine. I already switched the cable going to the NAS running OMV.
How do i start diagnosing my NAS running OMV 1.19? SMART data doesn't show an obviously defective drive, RAM test was also good. Where to look next?