How would you 'sell' using VMs for production application servers? What are the compelling benefits in using them in that situation?
I have to maintain a number of applications that are critical but are currently very light on resource need (syslog-ng, openldap, some in house tools), that we want to be redundant. I don't like having a bunch of machines sitting at 0.1% CPU usage, just out of principal.
But if you were trying to convince people who claim "Virtual Machines eat up resources, and are therefore never good for any production situation," what would you tell them?