I have a new build with all new parts. Here's the list: https://pcpartpicker.com/list/3psBq3
Only thing different is the HDDs are shucked 12TB easystores instead of reds.
I started on the last version of 6.7 (can't remember the third number) and was having issues where the entire system would lockup after many hours. Some days it'd only last a handful of hours, other times it'd go a couple days. When it locks up: the webUI is unresponsive and won't load, any running containers or VMs are dead and unresponsive, all shares are unreachable, all network traffic to the unraid server appears dead as well (no SSH, no ping replies, etc).
The only way to recover is for me to hold the power button and do a hard reset. Once the server comes back up, everything appears just fine again until it crashes again. Syslogs don't appear to provide any indication of something happening around the time of the crashes. I've uploaded diagnostics from right after the last two occurrences and a zipped syslog that's been archived to the flash through both of them.
I've run Fix Common Problems with it not finding anything useful. I've tried letting it run with zero containers or VMs runnings and it still crashes. I believe that there were long periods of writes to the array (both with and without parity) before the crashes. Some were during an initial bulk load/transfer from another NAS and others are during the recent attempts at a Time Machine backup to a share that has yet to complete since it keeps crashing.
I leave the webui on the dashboard page so when it crashes I can see the temps and CPU/RAM usage right before it dies. Temps are all in good ranges, RAM usage is minimal, and CPU usage is all over but never too high (max at 80%, but usually much lower).
I thought it might be a hardware support issue so I tried upgrading to 6.8, but that hasn't helped. Still getting the crashes. I've also checked that all cables are seated properly.
Any help would be greatly appreciated!
syslog.zip
odin-diagnostics-20191217-1556.zip
odin-diagnostics-20191217-0513.zip