topic after ESX Update only 50 percent of memory is in use in Operating System - VMware

after ESX Update only 50 percent of memory is in use

Mark Lengsfeld — Mon, 14 Jun 2010 14:48:32 GMT

We updated ESX 3.5 U4 to ESX 4 Update 1, Build 256968. On host HP PL DL360 Generation 4 the update was ok but on HP PL DL360 Generation 5 ESX only uses half of ram.
A memory error can be counted out, because you can see the total memory of 8 GByte in the system management console an on startup.

Mark

Re: after ESX Update only 50 percent of memory is in use

Modris Bremze — Mon, 14 Jun 2010 18:56:35 GMT

What is the module layout in banks? Were all 8GB "visible" in ESX before the upgrade? Was "Online spare" memory mode in use before the upgrade?

Re: after ESX Update only 50 percent of memory is in use

Mark Lengsfeld — Wed, 16 Jun 2010 06:05:07 GMT

The sockets 1,3,5 and 7 are clocked with 2 GByte modules. 2,4,6 and 8 are free. The online spare mode already exists before the update was installed.

Re: after ESX Update only 50 percent of memory is in use

Modris Bremze — Wed, 16 Jun 2010 10:15:36 GMT

Perhaps you could try disabling the online spare mode and see if that helps. It looks like half of the RAM modules (2x2GB) are online and being used, the other half are on stand-by.

http://dennietidwell.com/HPMemory.htm

Re: after ESX Update only 50 percent of memory is in use

Jan Soska — Wed, 16 Jun 2010 18:39:54 GMT

I suggest disabling online spares - do you need it? I could be done in system bios.

Jan