16GB HP Microserver

janhoedt
janhoedt used Ask the Experts™
on
Hi,

Please see http://www.experts-exchange.com/Software/VMWare/Q_27939687.html

My Microserver sees 16GB, then after reboot not anymore, then again ....
All 3 have the same symptom.

Please advise.
J.
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Power OFF the server, rather than warm reboot.

are you using this BIOS

       2011.07.29 (A) (25 Aug 2011)

Author

Commented:
I ll check that.

Author

Commented:
This is my version:
bios1bios2
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Author

Commented:
I checked the version I have with the one you mention, they are exactly the same:
bios
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
what I have noticed with your Microserver, is it has labels attached to your drive caddies, stating Non-Hot Plug, I assume you did not stick these there, so I'm wondering if there are different revisions/models of servers.

Author

Commented:
My other ESX-es/NL 40 (2 of them) don't have these labels attached and have the same problem.
I read somewhere something about the fact that the microserver could not see the 16GB ram because booting to fast ... or something. Might be some bios setting to change or different bios upgrade to do. If only I knew what/which one.

Commented:
have you spoken to hp support it shouldn't miss memory on reboot must be a known issue especially as you have multiple microservers with the same fault
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
@ian... this is an unsupported config, max memory should be 8GB and HP ECC DIMMs!
SteveArchitect/Designer

Commented:
sorry mate, he's right.

http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/15351-15351-4237916-4237918-4237917-4248009.html?dnr=1

It's not supposed to accept more than 8 GB.

Author

Commented:
I knew that but hanccocka has same config and no problems so I m trying to figure out the difference.
SteveArchitect/Designer

Commented:
if it's not meant to work with more than 8GB, anything you do to get it working is outside of the planned specifications. If it's just a test server with nothing important on it you may get away with it, but dont take the risk if it's a live/critical server.

What would you do if whatever workaround you implement suddenly decides to stop working....

Author

Commented:
>What would you do if whatever workaround you implement suddenly decides to stop >working....

Hanccocka has got it running for months, years ...?
Worst thing that happens is that it shows 8GB instead of 16GB but after (some) reboot(s) it works ok. Fine for me.
SteveArchitect/Designer

Commented:
Worst thing that happens is that it shows 8GB instead of 16GB but after (some) reboot(s) it works ok. Fine for me.
Fair enough. If the server dropping to 8GB and needing some reboots doesnt cause you any problems there's no reason not to give it a try.
The problem here is that you are trying to get it to do something it wasnt designed to do. That means there is no guarantee you'll get it working, of that it would keep working in the long term.

Even the smallest difference between the servers you have and the one(s) Hanccocka has got working may prevent you doing this. Firmware, Bios, hardware differences.

Good luck to you. hope you get it working. :-)

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