I'm thinking of setting up cloned machines running vmware, but i have never deployed this setup before. I need to provide 100% (or as close as possible to it) redundancy in case of hardware failure for a hosted phone system(VoIP). I would like to put the two machines in separate locations (colo's) in case of any connection failures. I am especially worried about mac address issues because of licensing issues with the phone system. If anyone has any ideas on this topic, ANY help would be much appreciated.