ReadyNAS Pro 6 has become unstable and regularly hangs

You can send in your logs (see the Sending Logs link in my sig)

Have you looked at e.g. systemd-journal.log and kernel.log around when you boot it up again after it hangs (these logs have timestamped entries)? Do errors show in the logs?

I've sent the logs by email as per the described process.

systemd-journal.log

The last stuff in the log before the "-- Reboot --" is a cron task

Jun 09 03:17:01 nas-01-ng CRON[15009]: pam_unix(cron:session): session opened for user root by (uid=0)
Jun 09 03:17:01 nas-01-ng CRON[15013]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Jun 09 03:17:01 nas-01-ng CRON[15009]: pam_unix(cron:session): session closed for user root

I have nothing in the /etc/cron.hourly/ directory.

kernel.log

I couldn't see any errors just before the "--Reboot--" message.

Not sure what's causing this.

Have you tried running the memory test boot menu option?

I have not tried the memory test, I didn't know it was possible - but have just read the KB article on how to do it so will give it a go.

How long does a memory test usually take? I've had it running for a number of days now. I took a quick screenshot of the ReadyNAS LCD yesterday.

Do I just leave it to crack on until I get to 100% prog or does it loop around and start again?

On the Pro it'll keep on running additional passes till you stop it. You could have stopped it after running just two or three passes, I think.

Ok, so it passed okay enough times then. I'll stop it in the morning as the ReadyNAS lives in the loft out of the way.

Where does that leave me with regards to debugging the regular crashing?