What to do after power down for overheating

I have a Qnap HS-251+ that’s been running great for quite a while now. Firmware regularly updated, no major problems until yesterday.

First I got the following alert:
Message: [Hardware Status] NAS temperature has exceeded the threshold: 65℃. The NAS will power off if the temperature exceeds 75℃.

And then less than a minute later got the following alert:
Message: [Hardware Status] Powering off the NAS due to overheating. The NAS temperature 127℃ has exceeded 75℃.

I unplugged the NAS and let it sit for a while (overnight). Today I plugged it in and powered it on. I can hear it power on and it’s slightly warm to the touch (though not hot/not abnormally so), but it’s not showing up on my network and can’t be found with Qfinder

I’m trying to determine what troubleshooting steps I can go through and/or how to see if it’s even booting up properly. Any ideas on what to try?

Thanks!

The NAS could be facing the LPC death, where the superIO is reading the wrong values…amongst other issues

You might have to look into a repair a
or a replacment

Probably won’t make a difference, but worth a try to pull the drives and see if it will boot up into setup.

Thanks for the feedback!

I tried pulling the drives and booting, but it’s still not being discovered by Qfinder, which I assume means that there’s a larger hardware problem. The unit is 10 years old, and while it hasn’t had any problems in the time I’ve had it, I’m assuming that given its age dealing with a replacement vs. a repair would be the best course of action.

Anyone able to help advise on a current unit that’d be a good replacement. And… am I able to take my existing drives and put them in a new unit and have all of the data on them be recognized, or do I need to do some kind of transfer?

Thanks in advance for any advice!

Evan

Try the 100Ohm resistor fix for the LPC issue (as mentioned)

Otherwise use the QNAP migration guide, I don’t think there is fanless units for 3.5" drives in the current lineup

Yup, there’s not-much to choose from. Only ones I could find are the HS-264 and the HS-453DX.

I don’t think QNAP have mentioned this (if they have, I haven’t seen it), but those fanless units will likely struggle to stay cool with the heat generated by larger capacity drives (8TB and-up).

Thanks! I’m not necessarily only looking for a fanless model to replace it with.

I’m sure the fanless models are more difficult to keep cool, but like I said, I had this one for a decade with no problems. I originally thought I’d be using this one in a location where noise was a bigger issue, but I’ve since moved and am certainly open to one that’s more “traditional”.

So, quick final question, I guess… is it accurate that if I get a new QNAP NAS (even a model with a fan), as long as it takes the same size drives as my existing ones I’ll be able to just pop them in and still have all of my data intact?

Thanks!

Evan

No, as said above, follow the migration guide, to check if migration is possible