[URL]   Maybe it's because of the virtual hardware version of each VM, if you can configure it for some VMs but not for others in the same cluster. The virtual hardware version must be 14 or upper as requirement of per-vm EVC. So first thing to do is to check the hardware version of each VM and upgrade it if needed. Note that upgrading virtual hardware version is one way operation, i highly recommend you to take a shapshot of each VM before upgrading.
Hello everyone, We currently have a 4 host VxRail Cluster. Unfortunately one of the hosts failed, and we weren't able to get a duplicate server so we do have a server with slightly different hardware: Host 1: VxRail S570 Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHzHosts 2-4: VxRail S470 Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz After working with Dell, everything had seemed fine and the host is now fully incorporated into the cluster. However, I just ran VxVerify to see if we can upgrade from v4.7.530 to v4.7.541. There are a few virtual machines that are reporting the following error message: The target host does not support the virtual machine's current hardware requirements. Majority of these VMs were migrated from a completely different host (not the VxRail) onto the VxRail relatively recently. There are a few that I had built on the VxRail and I'm not sure why it is reporting this error message. I did attempt to look into VMWare EVC, and attempted to look into setting it into Sandy Bridge (since that's what the three other hosts are?) but it reports that I can't because there are VMs that are online that don't support that. There is only one setting that only has host 1 with that error, which is Broadwell. What are my options here in order to reduce the downtime of machines as much as possible, so that I can successfully migrate these machines without issue to the best supported setting?
The Target Host Does Not Support The Virtual Machine's Current Hardware 
Requirements