Hi Stan, > 1. What are your specific failure concerns with your > primary site? > Network failure? Host failure? Storage hardware > failure?
You have a great suggestion assuming the data center functions well. the data center primary site failure means that the data center itself failed, meaning the host machine/storage/network are all in-accessible. > Maybe a good question for you to ask of the members of this > list at this > point is: > > How many OPs here run with a multi site IMAP cluster setup > with a > physically distributed mail store, either via replication > or a cluster > filesystem over a wide area network? > That is a good question. It is something I am looking for. however, if not going for expensive cluster filesystem over a wide area network, one simple way is to rsync every 5 minutes to copy over a backup serer in another data center and a quick dns change if the primary data center failed. The TTL in DNS settings can be 5 minutes. Peter
