Hi, my unRAID setup just recently ran out of space so I did a parity swap and used the old parity as a new data drive. I've been having some troubles with Plex since then, although I'm not sure that its related to that. Every time I stream something from Plex, it gets about two minutes in before the entire server goes offline (plex stops, cant access webUI, ssh, etc) and then stays offline for about ten minutes. When I am finally able to view the webUI again, it shows that the uptime is uninterrupted and I didn't see anything too strange in the logs.  I've installed the fix common problems plugin and received a message that call traces have been found on my server and that someone over here may be able to provide me with some assistance. I've attached the diagnostics - any help would be appreciated! 

kthwaits-diagnostics-20171014-2022.zip

Those diagnostics seem to be from just after you have booted the server and before any problem has occurred.   It would be better  to have some from after you have experienced your problem (since you say the GUI comes back without a reboot) as the diagnostics are then more likely to contain useful information to help with diagnosis.

Sorry about that, I streamed something from plex and recreated the problem. This is the diagnostics from immediately after the server became accessible online again just now.

kthwaits-diagnostics-20171014-2129.zip