Physical memory not showing in system properties

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I have upgraded my exchange 2010 system memory from 4GB to 8GB

But system properties showing only 4GB

Server is windows2008R2 and hardware is Fujitsu Siemens Primergy
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Shibu KuttanSenior Server Administrator

Commented:
Hi,

Please contact the hardware vendor and upgrade your BIOS. It will show full memory automatically.
 
Thanks.
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Author

Commented:
I have found the BIOS update which one to select as there are so many bios update

http://ts.fujitsu.com/support/downloads.html
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Author

Commented:
I have taken the latest BIOS update and updated successfully but still showing 4GB

Neil RussellTechnical Development Lead

Commented:
If you boot into the BIOS what does it show as available memory in there?
I think processor is not detecting more than 4 gb.  Please check this

http://msdn.microsoft.com/en-us/library/aa366796(v=vs.85).aspx
kevinhsiehNetwork Engineer

Commented:
How much RAM does the system show when it posts (before OS loads)? I suspect that the hardware isn't recognizing the memory module. It could be of the wrong type, or in the wrong slot. This really sounds like a problem for your hardware vendor to resolve.
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Author

Commented:
It is showing only 4GB before the server OS loads
kevinhsiehNetwork Engineer

Commented:
It's certainly not an OS problem, but between your hardware and the RAM module. My guess is that the RAM you added isn't physically seated properly, or isn't compatable.
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Author

Commented:
I tried changing slots with no luck

I am sure there is some settings to be changed as there is 8 RAM slots and I used only 4 out of that
kevinhsiehNetwork Engineer
Commented:
If you remove the original RAM, do you still see 4 GB? That would indicate that the new RAM at least works in your system.

Commented:
If what @kevinhsieh suggest doesn't solve your problem.
what is the exact model number of your server and what slots are you putting the memory in.
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Author

Commented:
@D_Vante
My server is Fujitsu Siemens
Primergy RX300 S4

1nd and 2nd  2x2GB

3rd and 4th I tried but it did not work.

now additional RAM is in 5th and 6TH slots (2x2GB)

So it should show 8GG
Director of Information Technology
Commented:
How many CPU's do you have in this server?

If you are running multiple CPU's you might have to pair them on seperate Memory Expansion Board 2.

From the system board information it looks like you need to pair them is such a way.

Please see the images.

DIMM-Config.PNG
yo_beeDirector of Information Technology

Commented:
Image 2 : Memory Expansion Board 2
yo_beeDirector of Information Technology

Commented:
Here is the link I found this information.  PAGE 8

http://www.fujitsu.com/downloads/PRMRGY/sys-con-rx300s4.pdf

Commented:
make sure in the BIOS under advanced Memory Redundancy is disabled

When I look it up it shows you should only have 6 slots if a single processor and 12 if a dual processor
MASEE Solution Guide - Technical Dept Head
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Author

Commented:
As mentioned above I swapped the old RAM slots with the new RAM slots. and it is detected

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