Activation of VCA mode for cluster production

Hello

I have the following configuration:

  • Existing Cluster_A with ESX 3 hosts running on the processor Intel Xeon E5540 (Nahelem)
  • 30 VM runs in a production environment
  • 2 new ESX hosts running on the processor Intel Xeon E5649 (Westmere)

2 new guests are not added in vCenter again, but the goal is to allow the addition of these 2 new hosts in Cluster_A.

I understand that, in order to have all 5 hosts in the same cluster, EVC mode must be activated with the highest level being "Nahelem" (lowest common denominator).

From a theoretical point of view, masking any CPU to apply will be identical to the current CPU presented the virtual running machines, settings allowing CVS using the same architecture CPU should not cause conflict or problem.

Therefore, I would ask you confimation that activation VCA and Nahelem for Cluster_A upgrade will not cause downtime or impact (e.g. BSOD) to the virtual machines.

Thank you

Kenny

Therefore, I would ask you confimation that activation VCA and Nahelem for Cluster_A upgrade will not cause downtime or impact (e.g. BSOD) to the virtual machines.
Kenny

Hello

Is 100% safe operation (done many, many times the performance of clusters). No side effects :-)

  1. create a TEST VM
  2. Add the new server ESX to vCenter
  3. put in maintenace mode
  4. Add to the cluster
  5. allow to LCA
  6. exit maintenance ESX
  7. try to vMotion between the old and the new node in a cluster
  8. If vMotion won't work, says André, you should turn off the virtual machine and run it.

Tags: VMware

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