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EVC Mode in vSphere Clusters: A Common Issue & How to Resolve It

In VMware vSphere environments, ensuring seamless virtual machine (VM) migration and high availability often hinges on the proper configuration of Enhanced vMotion Compatibility (EVC) mode. Without EVC, adding new hosts with newer CPUs can lead to VM isolation, where VMs cannot migrate back to older hosts, potentially disrupting operations.​ What is EVC Mode? EVC is a VMware feature that standardizes CPU feature sets across all hosts in a cluster by masking advanced CPU instructions to match the oldest CPU model or a specified baseline. This ensures that VMs can migrate...
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