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HPE ML310e Gen8 v2 - P420 Controller wrong temperature readings from iLO 4 and HP SSA - overheating?


Barty
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Hello there ;-) First post here ;-) I posted similar question on HP forum but no response from anyone ; - (

 

So we have upgraded from B120i controller to P420 - sitting in Slot 3.

We have RAID 10 setup with 4 Sata - 1TB HDDs.

Server is sitting in room without Air-conditioning. Room temps are between 25 - 29 Celcius. Now, it's been 3 years that our server is running 24h/day without any failure.

All server components are up to date with firmware and drivers (double checked). I'm using regulary ProLiant Service Packs (latest is from April 2017). Among others: iLO has 2.53 firmware, P420 has 8.00).

Temps reported by iLO for all components are very cool, except P420 controller.

No matter what temperature is in the room P420 controller temps are always:

  - reported by iLO - 85 (controller)

 - reported by HP SSA - 88/43/28 (controller/cache module/battery)

I know, that controller temps goes up and down only from fans going faster and slower. Normally, for 3 years, fans were at: 5% and 9% (front and rear one) no matter room temps. Now, after P420 installation they are at: 14% and 23% raising to 15% and 29% when room temp is 29 Celcius. (still rather silent to me which is nice).

I also found this statement here: (as a response to author article)

http://www.evilbox.ro/other/hp-smart-array-p420-2gb-fbwc-2-ports-int-sas-controller-review/#comment-12310

Quote

What slot do you put it in? In mine it also always shows me 85° C. No matter if its 28° C in the summer in the room (AC once failed), or 15-16° C in the Winter with opened window in the cellar.
Sometimes 86° C. It was brand new and always showed me this.
Also mine has now the cache modul locked, because i needed to unplug the power 2-3x and now it thinks its broken. The module worked fine in a DL380 G8 LAB Server at work for 2 Weeks, no problems after some restarts and otherwise 24/7. Any idea how I could unlock this thing again? 🙂

Now, don't get me wrong, nothing is bad with my server and setup from my point of view, I'm just curious, why iLO 4 and HP SSA give me different temps readings. From what I know after forum reading, this controller had some issues with different servers but appereantly all flaws were patched with firmware. Some users have temps from 50 C to 90 C and I'm almost 100% sure that it's because from false sensor readings or something similar.

Moreover, when I check the temp with my hand ;-) close to the radiator I'm almost 100% sure that those reading are false.

Any tips?

Bart

 

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The 85c number comes up often in these discussions. I think it may be the upper limit for iLo on certain devices. If it were mine I would set up a fan/blower to blow air directly on the heatsink of the P420 and see what the numbers look like in SSA and iLo.

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