On Tue, 2005-10-04 at 08:03 -0400, David Hollis wrote: > For my company, I've setup a mail/groupware environment that uses > Postfix, OpenLDAP, Postgres, Apache, etc and am now looking at ways to > make it a more redundant arrangement. All of the components have > methods to help me with the lone exception of the backend mail storage > for the end users. Ultimately, I am wanting to have systems at > different geographic locations, not even on the same network, ideally > with users able to access any of them at anytime and be able to do their > thing. The users mail storage is in Maildir format which seems like it > will help any replication type scenario. I can't just NFS mount the > mail directories, because then my NFS server becomes my single point of > failure. Do things like GFS work to handle this? If so, do they > operate across slow links (not talking dial-up here, but general > Internet cable/DSL type links) > > If it helps, our total mail volume is not that tremendous so completely > instantaneous replication isn't totally necessary, but I would want > fairly quick convergence (say 30 minutes or less). > ---- I think you will find that most IMAP servers aren't real keen on using an NFS storage backend anyway. I can't conceive how maildir data store has anything to do with replication. GFS would work - cyrus-imapd also offers murder for a multi-server approach. Backup is always a bear on these things that you have to consider. Craig -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
