Why my Win2008 OS doesn´t recognize the 6 vSMP(virtual CPU) assigned, only recognize 4 vSMP.

[APineda]

Hi,

Anybody knows why my VM Win2008 OS doesn´t recognize the 6 vSMP(virtual CPU) assigned, and only recognize 4 vSMP?.

I have the correct license for VSphere and VCenter, also into the Device Manager of the guest OS, I can see the six vCPUs but into the system properties window I can see only four vCPUs.

I´m running on ESX 4.0

I hope somebody can help me about this issue.

P.S. I attached the device manager and system properties images

Thanks in advance!!

[MarkStrong]

Windows Server 2008 STANDARD supports 4 processors maximum.

VCP4 | MCITP | Master ASE | CCNA

[APineda]

Thanks Mark,

Then a Win 2008 Enterprise must recognize the six vCPU's?

[a_p_]

If you really need that many CPUs/cores, you could configure multicore CPUs. This feature is officially supported in ESX(i) 4.1 and was experimental in 4.0. See http://kb.vmware.com/kb/1010184

André

[Troy_Clavell]

I would also suggest applying SP2,which may help.

[MarkStrong · Accepted solution]

Windows Server 2008 Standard(32bit) --> 4 processors

Windows Server 2008 Standard(64bit) --> 4 processors

Windows Server 2008 Enterprise(32bit) --> 8 processors

Windows Server 2008 Enterprise(64bit) --> 8 processors

Windows Server 2008 Datacenter(32bit) --> 32 processors

Windows Server 2008 Datacenter(64bit) --> 64 processors

VCP4 | MCITP | Master ASE | CCNA

[APineda]

Thanks for your guidance guys...

However, Mark's answer was the correct one.

[MarkStrong]

Thank you.

If I were you I would definitely give a star to a.p. for the link to KB article "Setting the number of cores per CPU in a virtual machine". http://kb.vmware.com/kb/1010184

It is extremely helpful!

All the best

VCP4 | MCITP | Master ASE | CCNA