I have no idea what is going on here, but my server will just randomly shut itself off without anything of note happening (at least that I am aware of). I will often wake up in the morning and go to check the server and it won't be accessible, but the server machine itself is still on. If I manually reboot my machine via the power button it generally stars up fine and I can begin using it again.
Not sure if diagnostics will help here, but this just happened again and I got the diagnostics after I manually rebooted.
fc-raid-diagnostics-20240510-1958.zip