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you need to enable EVC (enhanced vmotion compatibility) assuming sixcore CPU is Intel as well
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I think you need to be more concerned with processor generation, not the number of cores. Check out this KB for a comparison of which processors are cross-generation compatible and go from there:<br />
<br />
<a href="http://kb.vmware.com/kb/1003212" rel="ugc">http://kb.vmware.com/kb/1003212</a>&nbsp;<br />
<br />
for vMotion check out these KB articles and determine the compatibility of your processors:<br />
<br />
Intel: <a href="http://kb.vmware.com/kb/1991" rel="ugc">http://kb.vmware.com/kb/1991</a><br />
<br />
AMD: <a href="http://kb.vmware.com/kb/1992" rel="ugc">http://kb.vmware.com/kb/1992</a><br />
<br />
CPU Mismatch: <a href="http://kb.vmware.com/kb/1993" rel="ugc nofollow">http://kb.vmware.com/kb/1993</a><br />

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I have just set up some 6-core boxes (IBMx3650MIII) mixed with 4-core MI and MII on VMWare 4.0U1. Vmotions worked fine without changing any settings, As others have said its the CPU features that matter.
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I have an infrastructure vSphere PLUS 4.1 Enterprise. HOST I have a dual processor Intel Quad Core. I'm buying a second new dual-processor HOST &quot;sixcore&quot;. <br />
My virtual machines (Windows 2003/2008 have up to 4 virtual cores CPU). Let me know if:<br />
1) I can use the &quot;VMotion&quot; between the host and the Six Core Quad Core?<br />
2) the function &quot;HA&quot; works, however, between the host and the Six Core Quad Core?<br />
<br />
Thanks<br />

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I have an infrastructure vSphere PLUS 4.1 Enterprise. HOST I have a dual processor Intel Quad Core. I'm buying a second new dual-processor HOST "sixcore". 
My virtual machines (Windows 2003/2008 have up to 4 virtual cores CPU). Let me know if:
1) I can use the "VMotion" between the host and the Six Core Quad Core?
2) the function "HA" works, however, between the host and the Six Core Quad Core?

Thanks


you need to enable EVC (enhanced vmotion compatibility) assuming sixcore CPU is Intel as well

I think you need to be more concerned with processor generation, not the number of cores. Check out this KB for a comparison of which processors are cross-generation compatible and go from there:

http://kb.vmware.com/kb/1003212 

for vMotion check out these KB articles and determine the compatibility of your processors:

Intel: http://kb.vmware.com/kb/1991

AMD: http://kb.vmware.com/kb/1992

CPU Mismatch: http://kb.vmware.com/kb/1993


I have just set up some 6-core boxes (IBMx3650MIII) mixed with 4-core MI and MII on VMWare 4.0U1. Vmotions worked fine without changing any settings, As others have said its the CPU features that matter.

Vmotion / HAwith six core and quad core

I have an infrastructure vSphere PLUS 4.1 Enterprise. HOST I have a dual processor Intel Quad Core. I&amp;#39;m buying a second new dual-processor HOST &amp;quot;sixcore&amp;quot;. 
My virtual machines (Windows 2003/2008 have up to 4 virtual cores CPU). Let me know if:
1) I can use the &amp;quot;VMotion&amp;quot; between the host and the Six Core Quad Core?
2) the function &amp;quot;HA&amp;quot; works, however, between the host and the Six Core Quad Core?

Thanks


VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.