bl1nd3d
Contributor
Contributor

Move VMs across clusters with the same vCenter without EVC

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Hello,

we're currently running two ESX clusters with vCenter

5.5 (5 hosts) - EVC deactivated - Ivy Bridge CPU  - 1 Cluster

6.5 (2 hosts) - EVC deactivated - Broadwell CPU  - 1 Cluster

As we're running out of RAM, we have to join/migrate/update the 5.5 cluster to 6.5.

If possible, I would like to avoid using EVC-mode as I would have to restart all VMs afterwards afaik.

Would this be a way?

- create a second cluster on the 6.5 cluster

- remove a host from the inventory of the 5.5 cluster

- re-add the host to the new cluster on the 6.5 cluster

Would this setup allow moving VMs between the 2 clusters without virtual HW conflicts and without using EVC?

If so, I plan to migrate the 5.5 hosts to 6.5 one by one.

Would this also offer the possibility of HA across two clusters?

Thanks in advance!

1 Solution

Accepted Solutions
GayathriS
Expert
Expert

With out EVC , its not possible to migrate VM's with different model/series of CPU

Different vendor is not possible

You should read through EVC doc:

VMware Knowledge Base

Please mark this as "correct" or " Helpfull" if this answers your query.

regards

Gayathri

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3 Replies
GayathriS
Expert
Expert

With out EVC , its not possible to migrate VM's with different model/series of CPU

Different vendor is not possible

You should read through EVC doc:

VMware Knowledge Base

Please mark this as "correct" or " Helpfull" if this answers your query.

regards

Gayathri

malickware
Enthusiast
Enthusiast

Higher CPU cycle to a lower CPU cycle vmotion is always possible without EVC, however, you can not move the VM from higher clock cycle to a new clock cycle esxi host.

HA is a cluster function and will not help in your case.

The best solution is to make the 6.5 esxi host to be in EVC mode.

bl1nd3d
Contributor
Contributor

Thanks for your helpSmiley Happy

So I would procede like this:

-Set EVC mode to Ivy Bridge on the 6.5 cluster

-Remove a host from the 5.5 inventory and add it to the 6.5 cluster.

Will it work with EVC enabled on 6.5 and being disabled on 5.5?

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