VSphere 4 does not see added physical RAM

[mskyy]

I have a server running Vshpere 4 standard.  It had 16GB of RAM and I added another 8 to bring it to 24GB.  When I powered everything back up, vcenter (and vclient into the server itself) is still showing 16GB for the server however, under hardware status tab it shows 6 slots with 4GB ea.  So it seems to me the RAM is registered physically but VSphere isn't reconizing it.  Any suggestions?

          Thanks,

[Troy_Clavell]

ESX or ESXi?  Have you tried restarting the management agents, or disconnecting and reconneting the host in question in and out of vCenter?

[mskyy]

ESX 4.0

Even if I don't use vcenter and I use the vclient to go directly to that server, it shows 16GB.  Disconnecting and reconnecting had no change.

[Troy_Clavell]

firmware is current?  Even though your restarted the box, you have tried to restart the management agents?

service mgmt-vmware restart

You can also run the below commands from the console to check memory

cat /proc/meminfo

or

dmidecode | grep "Size"

[mskyy]

If I do this, will it disconnect any VM'S?

[Troy_Clavell]

If I do this, will it disconnect any VM'S?

no, your VM's will be fine.

[mskyy]

I did the restart, no change, the cat suggestion sent back no such file or directory and the dmi command sent back configuration page size but no size of memory.  I am a Linux novice so I may need help running commands.

[a_p_ · Accepted solution]

Does the server itself recognize the additional RAM? Servers usually require the correct placement of the RAM modules.

Please double check the RAM is correctly shown in the server's BIOS.

André

[samansalehi]

Is the startup of the server, test the RAM correctly? Does it show 24 GB?

What is the brand of your server and the model?

If it is a HP server, maybe it is need to update the firmwares, it has an addon for mangement of ESX.

[mskyy]

Due to the weather, I got in too late to reboot everything and I am out of the office the next 2 days so I will try this on Monday.

[samansalehi]

Dear friend;

If these replies were useful, would u please mark it as "Helpful" or "Correct"?

This is important for get the vExpert Score.

Thank u

Saman

If these replies were not the answer, just response to find the solution, so it is useful for me too.

[mskyy]

I shutdown the server and 2 chips from 5 & 6 to the 7 & 8 slots.  Then everything came up correctly so I don't know if it is the slots themselves or they were not seated correctly.  It is all good now, thanks for your help.