I'm experiencing random shutdowns. I don't see anything in the bios log saying it overheated and the syslog gets blown away of course. What is my best course of action for determining what my issue is? Is the a live linux usb I can run that will run diagnostics and tell me there is a problem? Preferably one that saves logs so when it randomly shuts down I can pull the stick and go look at what caused the issue. Memtest seemed to be running fine for a few hours and passed at least once but the server was shut off when I woke up in the morning.

These things come to mind:

 

Power outage?

Something over heating?

Power supply?

Quite sure it's not a power outage.

It could be overheating but like I said, the bios log doesn't say anything and I don't know how to tell otherwise if it's overheating.

Could be the power supply. How can I test that?

How old is the power supply? What wattage is it rated for? What  brand is it? What is plugged into it? Is your server connected to a UPS?

It's an Antec HCG-750 approximately 2-3 years old. 750 watt. Plugged into my supermicro h8dme-2 which runs the board connecting the HDD's and what not. No UPS. I'm not running a video card or anything off it. Just plugged into the motherboard.

 

Im running memtest now and it appears to have stopped at 8 minutes in. Although the red plus next to memtest is blinking nothing else is going on the screen. At the time it stopped it says cpu temp 33c which seems normal

 

Memory problems usually lead to reboots and blue screens, not usually shutdowns, but that's just my opinion. Is your server plugged directly into a wall outlet or a power bar? If a wall outlet, is anything else plugged into the same outlet?

Directly into the wall. It was on there with a lamp. I've since moved it to the next wall over that has a monitor plugged into it.

That's a tough one then, maybe someone else with more experience can jump in. You might want to do a diagnostic dump and upload the file in case anyone wants to look at it.

That's a tough one then, maybe someone else with more experience can jump in. You might want to do a diagnostic dump and upload the file in case anyone wants to look at it.

Will do. I'll restart it and boot up unraid and grab it. Thanks for your time.

Here is my first set of diagnostics. I'm going to try to go vanilla and post again. This is after a bootup so I don't know if it will help alot.

 

EDIT: Actually I think I'll just let parity check go and see how long it lasts before shutting off.

unraid-diagnostics-20160302-2109.zip