Reading Time: 3 minutes In a VMware infrastructure, when you build a new VM, the default compatibility level could depend on your vSphere version, from which client you are using (the legacy vSphere Client does not ask for VM virtual hardware version in the default wizard), but also from your cluster settings. VM virtual hardware version defines exactly the compatibility level, but you can define the default level using the vSphere Web Client or the new HTML5 Client.
