We just recovered from a big disaster. We lost our only Exchange server! I was able to get it rebuilt and recovered the databases, now I want to make sure this doesn't happen again. I was in a time crunch to get it back up, so I didn't set up any active or passive roles. I know I've heard if you are trying CCR you must do this during installation. Since I really can't afford to start over and take everyone down again, I need to know the best way to get some kind of redundancy so I can limit downtime in the future. Currently, I have Exchange 2007 Enterprise running on Server 2008. I have another Server 2008 server built and ready to go. Should I just install Exchange on that server and enable SCR, or is there a better way?