We've built our development infrastructure with virtualization technologies. Our main development server is a Qemu image which runs as a process on my desktop

We've built our development infrastructure with virtualization technologies. Our main development server is a Qemu image which runs as a process on my desktop under linux kernel virtualization (KVM). Inside that server, various resources we use to organize development such as subversion, trac, irc, build system, etc. are isolated into separate vserver partitions. Later when we need to move everything onto dedicated server(s) it's clear and obvious how to do it.