Solved

IBM Server x3650 M2 Memory

Posted on 2013-01-21
15
1,618 Views
Last Modified: 2013-04-19
Hi Gurus,

I am hoping someone will save me a lot of time and hair (of which I have not much off).

I have an IBM x3650 M2 (7947-32M) with a single CPU. I purchased 2 x Kingston 24Gb Mem Kits and installed the memory without any problems. No errors or warnings whatsoever.

The problem is that it only sees 32Gb and not 48Gb.. What am I doing wrong? Is this correct?

According to the specs online, it can handle up to 132Gb RAM.

Thanks...
0
Comment
Question by:chrisrip
  • 6
  • 5
  • 2
  • +2
15 Comments
 
LVL 10

Expert Comment

by:bigbigpig
ID: 38803897
When you say "it" sees only 32GB what are you referring to?  Does the BIOS/POST show only 32GB?  Or does the operating system only show 32?  Some operating systems limit the RAM.  Server 2008 R2 Standard, for example, limits you to 32GB RAM.
0
 
LVL 1

Author Comment

by:chrisrip
ID: 38803901
Sorry... The server is running VMWare vSphere 5.0. I am pretty sure when I checked the BIOS, it also just shows 32Gb. The kingston kit comprises of 3 x 8Gb Modules therefore the server has 6 x 8Gb.

Cheers.
0
 
LVL 23

Expert Comment

by:Nagendra Pratap Singh
ID: 38803931
Ask the RAM company to help. Maybe certain slots have to be filled first.
0
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

 
LVL 10

Expert Comment

by:bigbigpig
ID: 38803955
How many physical CPU's?
0
 
LVL 30

Expert Comment

by:pgm554
ID: 38803965
UDIMM or RDIMM?
0
 
LVL 10

Expert Comment

by:bigbigpig
ID: 38803966
FYI - sequence:

Microprocessor socket 1: Install the DIMMs in the following sequence: 3, 6, 8, 2, 5, 7, 1, 4

Microprocessor socket 2: Install the DIMMs in the following sequence: 11, 14, 16, 10, 13, 15, 9, 12
0
 
LVL 1

Author Comment

by:chrisrip
ID: 38803972
1 CPU

RDIMM
0
 
LVL 10

Expert Comment

by:bigbigpig
ID: 38803977
Verify you have them all in the RAM slots for CPU1, none in CPU2.
0
 
LVL 1

Author Comment

by:chrisrip
ID: 38803980
I tripple checked that I had them in the correct slots.. There are also no POST errors or warning LED's to indicate a failed Memory module
0
 
LVL 10

Expert Comment

by:bigbigpig
ID: 38803982
Single or dual ranked?
0
 
LVL 1

Author Comment

by:chrisrip
ID: 38803992
Not sure.. The Kingston Part Number is KTM-SX313K3/24G and it says equivalent to IBM 46C7449
0
 
LVL 55

Expert Comment

by:andyalder
ID: 38805120
Are you using the free version of ESX?
0
 
LVL 1

Author Comment

by:chrisrip
ID: 38838156
Kingston Tech Support have asked me to verify a few things so I will do that and report back. They want me to ensure the modules are in the correct slot plus they want me to test each module one by one...
0
 
LVL 1

Author Comment

by:chrisrip
ID: 38865945
Sorry for the delay..

Checked memory slot allocation and all was correct. Removed all but two modules leaving 3 & 6 occupied; No problems. 16 Gb. Add next two modules in 8 & 2; No problems, 32Gb. Add next two in 5 & 7; Server dissables slots 2&3 and reports failed memory test but they were OK when only 3 & 6 where present !!

Any ideas?
0
 
LVL 55

Accepted Solution

by:
andyalder earned 500 total points
ID: 38866019
Could you try 3, 6, 8, 2, 5 as per this drawing - http://www-03.ibm.com/systems/xbc/cog/images/x3650M2_7947_memory1.gif (5 dimms).

N.B. there are 3 memory channels so there's no reason to add by 2s while you experiment. The 8 sockets in that IBM are misleading, there ought to have been 9 but there wasn't room. Also it's only a recommended order that IBM give, so long as you populate the outer sockets of each memory channel in that drawing before the second bank it should still work although less efficiently, 1,2,3,6 even works as far as the CPU is concerned. Might be a BIOS upgrade needed to enable all possible orders.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Usually shares are where we want them for our users and we tend to take them for granted. There are times, however, when those shares may disappear causing difficulty for your users. One of the first things to try is searching for files that shou…
More or less everybody in the IT market understands the basics of Networking, however when we start talking about Storage Networks, things get a bit dizzier, and this is where I would like to help.
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question