So there's a lot of talk about virtualization out there, the possibility of running multiple servers on single machines, instant (nano second) delay failovers, clustering clustered virtual servers, reduction in costs etc.

I am looking into virtualization @ the moment, possibly using ISCSI disk systems & a few deskops to run the VServers.

I have a pretty good idea which servers I want to virtualize, how to do it what my expectations are from this.

I want to hear from you out there on the following:

Are you using virtualization & how do you find it?
Are / Would you consider Virtualization?
Which Servers on your network would you virtualize & which wouldnt you "trust" / risk to virtualization?