PSC Product Management have commented that VMCI is supported for any VMWare version that is presently support by Progress Software. If there are any problems related to this then please contact Customer Support and the matter will be investigated.
With regard to
VMWare snapshots, this feature is not supported and would need to be included in a certification in order to change this. If there is a need for this feature and there is a valid a business case for it, please submit the request to openedge-enhancements@progress.com. This ensures a direct audience with Product Management for your ideas.
With VMWare support, in general, if PSC indicates that it is supported platform, this indicates a certain level of confidence that it will work and that any issues that arise will be addressed. Progress supports Virtual Machines (VMs) to the extent that they represent the native OS environment. If there are any extras (like snapshots) that the VMWare manufacturer adds then it is wise to get verification before committing to this technology.