2 Replies Latest reply on Feb 14, 2020 1:31 PM by a.p.

    Unable to set running cluster to EVC Mode Skylake

    hcimarkus Lurker

      Hello communities,


      currently Iam running a 12 Node Cluster with (4xGold6140 and 8xSilver 4116). Today I updated the cluster from 6.5 to 6.7 assuming i can set the "skylake" EVC Mode for further cluster expansions. We are planning to upgrade the cluster of tow new Cascadelake CPUs.


      I was wondering that the vCenter said "the EVC mode cannot be set because of running VMs". Yes, I know the problems with running VMs and EVC but in my opinion i should be set the highest EVC that the CPUs in the cluster supports and in my case it should be EVC? I found the following KB-Article: VMware Knowledge Base


      Does anyone know this issue? And are there other options?




        • 1. Re: Unable to set running cluster to EVC Mode Skylake
          msripada Expert

          May be if you can isolate the VMs which are having issues with the error and EVC and enable the EVC on those VMs manually, you can try again post that.


          check /var/log/vmware/vpxd/vpxd.log at the same time when you try to enable EVC and get error message which might provide data of VMs..


          This is not tested but I am trying to isolate if there might be a VM which we can isolate causing this issue




          • 2. Re: Unable to set running cluster to EVC Mode Skylake
            a.p. Guru
            User ModeratorsCommunity WarriorsvExpert

            I ran into the same issue this week with a Skylake CPU cluster (all hosts with the same 61xx CPUs, and the latest vCSA + ESXi 6.7 patches installed). I could't figure out the root cause of this, and due to time pressure we decided to evacuate some hosts, move them to a new EVC enabled cluster, and do a rolling VM power cycle to cold migrate them to the new cluster. In my case it was just a 2 node cluster with only about 20 VMs, but I can feel your pain.

            IMO there's something wrong with EVC, i.e. EVC CPU features not matching the physical CPU features.Maybe worth raising a support call with VMware.