My Unraid host rebooted this morning without explanation, while files were being copied into the pool. The file copy was running overnight for about 8 hours, before the unexpected restart.

 

My setup is as follows:

- 3 16TB drives in an encrypted ZFS storage pool. (Seagate EXOS)

- 128gb USB as the sole array drive (I needed to have a drive in the array in order to create a ZFS storage pool in the 'cache', it isn't used).

- VM, Docker disabled.

 

MB: Supermicro X10SL7-F

RAM: 32gb DDR3 ECC unregistered

CPU: Intel Xeon®CPU E3-1271 v3 @ 3.60GHz

PSU: Seasonic 80+ gold 750w

 

my ram has passed Memtest86, however happy to try other tools.

 

I have captured diagnostics

 

Thanks, your help is appreciated

tower-diagnostics-20231112-0946.zip

Unexpected restarts strongly suggest some sort of underlying hardware error.   It could be something like a PSU problem or perhaps a cooling issue if it is not RAM related.

 

unfortunately the logs in the diagnostics restart after a reboot as they are purely in RAM.so do not show what lead up to the reboot.   To get a log that survives a reboot you need to enable the syslog server.