From what I can tell, CPS requires periodic full backups of the entire Exchange store, which in this case is 40 to 60 GB. I'm not sure I want to be pushing that much data across a VPN link on a regular basis. Am I wrong? I also don't want to have to do a restore from a backup-to-disk folder when I need that data; I want it sitting on the backup Exchange server in an EDB and STM set (possibly with the current Exchange log files) ready to be mounted or even already mounted (if possible). I don't need instant automatic failover, but I do want no-hassle manual failover that can be accomplished in a few hours at most.