Mex

So over the last couple of days I have had a couple of total freezes of Unraid. The server becomes completely unresponsive. Shares, webgui or SSH are not accessible. I haven't found a way to reproduce it but my guess is that it must be connected to some background activities (like parity check or mover) but I cannot confirm this as it does not happen all the time. And of course I cannot exclude hardware errors. - The first time it was booted in default mode (no GUI) and the cursor kept blinking, but the keyboard was non-responsive. I had just replaced a HDD and it had begun the rebuild when it froze. When I got it up again it started over and completed successfully. - The other time I was booted in GUI mode and the entire screen was just frozen (mouse+keyboard non-responsive). This must have happened during the night and I didn't use it for anything. Both times I had to cut power to get it up again. I have updated all plugins and dockers, I've also run a successful memtest. I have no idea what to look for in logs etc, but I have included the diagnostics as directed. Hardware: CPUs: 2x Intel Xeon E5645 6 core/12 thread 80W TDP RAM: 6x Hynix 4GB DDR3 ECC 1333 GHz GPU: Nvidia Quadro K2000 2GB Kepler Storage controller: LSI SAS 9201-8i HBA Adapter: NVMe PCI-E M.2 SSD to PCI Express 3.0 X4 Storage: 2x 4TB (1 as parity), 2x 2TB, 2x 750GB Cache: Intel 600p 256GB NVMe SSD nova-diagnostics-20181201-1129.zip