topic EVC Mode change in VMware vSphere™ Discussions

EVC Mode change

fborges555 — Sat, 20 Jul 2019 05:00:10 GMT

Hi gurus

as you can see from my post I am still new to VMware, so go easy on me.

I need to lower my cluster EVC from Ivy to Sandy , but all I read , request that ALL VM be turn off, but my question is, if my vcenter is a VM and is turned off along with all VM ,how do I get to cluster EVC and change the mode .Vcenter is turned off.

Thanks and sorry for my confusion

Re: EVC Mode change

VysakhNair — Sat, 20 Jul 2019 05:26:17 GMT

fborges555

Please read below VMware KB

VMware Knowledge Base

Re: EVC Mode change

fborges555 — Sat, 20 Jul 2019 05:31:58 GMT

Thanks for jumping into this, but I already have EVC enable on my cluster and is set to Ivy Bridge, what I need to do is lower the mode to Sandy Bridge and it tell me all VM has to be turn off, that is my dilemma.

Thanks again

Re: EVC Mode change

IRIX201110141 — Sat, 20 Jul 2019 05:54:49 GMT

2 solutions which share the same key element (how to move vcenter)

Move one ESXi out of the cluster (Improve this by create a cluster with right EVC)
Shutdown VCSA. Unregister it on the current Host and register the VM on the already separated Hosts and power it on again
Now youre able to shutdown all VMs from the production cluster and place hosts into MM to lower the EVC
Move the VCSA again
Bring back the last Host

Move the first ESXi out of the Cluster into a new Cluster with the lowered EVC
You can now shutdown single VMs within there maintanence window and move them into the new Cluster and start them again. One by one.
Move another ESXi when resources becomes available
At the end you have one Host and VCSA left. Now see solution 1.

It depends on how much "adv" options, permissions you have enabled on the old cluster. Maybe your backup is also focus on the cluster name and object id. So think about if the old cluster object need to survive or if you just can create a fresh one which later take the old name.

If you havent patch your Hosts against Spectre/Meltdown do it befor you starts because it have effects on EVC!

Regards

Joerg

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