We have a couple of servers that are reaching about 5 years old and I love to replace them. I typically don't like having hardware over 5-6 years old (especially hard drives). I've done a couple of these upgrades before, but I was wondering what people suggest in terms of how to get it done. We'd want to minimize down-time but at the same time keep the IP's that we currently have (so we have to migrate the data, than swap the IP's). Any comments or suggestions are welcome.