Hello all and thank you for looking in to this problem.
I have checked on my unraid server and here is the current configuration what I have
1 array of 3 disks
1 chache of 2 ssd's
1 cache of 1 ssd
1 cache of 1 disk
I don't think that my server errors are triggered by m.2
After my server rebooted I noticed 1 error what I haven't had before.
the error is refering to an vifo-pci.
I have atached the print screen for a better view.