Can you obtain the Areca logs and send them to the support ticket 1009172 and send them to Areca for verification. Also we see a very high load from the CPU and engineers think it could be something with the RAID, recommend to do a RAID verify.
Also check to see if there is a another IP Address that is using the same address as the DSS 172.16.0.1 (Printer, PC... or other).
Ok, let's do a couple of things to nail this issue as best we can. Do the following:
1) Run the Repair Filesystem tool from the Extended tools (CTRL + ALT + X) menu from the console. They system will reboot.
2) Then test again to see if it crashes again.
3) If it Crashes again - run the memtest - After system is booting from POST, hit the escape key or tab key. You will get a basic menu to run the memtest - let that run for 1-2 hrs.
4) Run the Demo-CD version of DSS from the website link below. Then test, I want to verify if it is the USB module.
No problem on working this out with you, as now it is becoming interesting how your system is not working like so many. Let's keep trying several things.
1) Use the Repair Filesystem tool not the Remove LV ...
Just create a NAS LV and then run it.
Or just go to the last step to try the Demo-CD route to rule out the USB module.