AlkalineKoala

Hi, I've been plagued with frequent crashing with no error logs recorded for years. The unraid GUI isn't reachable and does not respond to ping, or SSH. It typically happened once per month and I have never been able to resolve. My server is an Optiplex 7050 SFF running Intel® Core™ i5-7500 CPU. Flags i915.enable_dc=0 i915.enable_psr=0 intel_iommu=off libata.force=noncq pcie_aspm=off hung_task_panic=1 softlockup_panic=1. C-states disabled. System has passed 24h memtest without crashing. I never see anything in the error logs (remote syslog on USB) nor dmesg running on a monitor directly plugged into the box. It mainly happens in the early hours of the morning, when mover running. Seems linked to high disk / CPU usage. I was originally running 3 x 10tb HDDs in a yottamaster DAS connected via USB3. I suspected this was causing instability so switched to an external HDD cage directly connected via a PCIe sata 3 controller card. The drives are now powered with an external picoPSU. This did not resolve the crashing. I've since purchased another 10tb HDD but cannot successfully get a pre-clear without the system crashing so I need to find a solution. I did notice when I opened the case that the sata drive 4 indicator (the disk that was pre-clearing) light was rythmically flashing after the crash. I would be really grateful if anybody can help. mitchnas-diagnostics-20260731-1151.zip