Vmotion / HAwith six core and quad core

Posted on 2010-11-12
Last Modified: 2012-05-10
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?

Question by:Andrea Chiavegato
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Expert Comment

ID: 34125206
you need to enable EVC (enhanced vmotion compatibility) assuming sixcore CPU is Intel as well

Expert Comment

ID: 34125256
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: 

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



CPU Mismatch:

Accepted Solution

PenguinN earned 500 total points
ID: 34125556
Compare the features of your current proc to the features of the new one. You can mix various Intel processors but the technology they possess is your boundary.

For instance if you have one machine that has EVC and the other one has not, profiling your machines is no use because you'll get an error on EVC it you got that set in your profile. Stepping Number of processors is also not important between hosts. 2 rules get the same features on your processor when you are expanding and don't mix AMD, INTEL etc.
LVL 12

Expert Comment

ID: 34130677
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.

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Last article we focus in how to VMware: How to create and use VMs TAGs – Part 1 so before follow this article and perform the next tasks, you should read the first article how to create the TAG before using them in Veeam Backup Jobs.
Ransomware is a malware that is again in the list of security  concerns. Not only for companies, but also for Government security and  even at personal use. IT departments should be aware and have the right  knowledge to how to fight it.
Teach the user how to rename, unmount, delete and upgrade VMFS datastores. Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore:
Teach the user how to configure vSphere Replication and how to protect and recover VMs Open vSphere Web Client: Verify vsphere Replication is enabled: Enable vSphere Replication for a virtual machine: Verify replicated VM is created: Recover replica…

696 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