 Migrating server AND OS - same Zimbra version
I currently have a multi-server install of Zimbra 5.0.2 NE. There are 2 smtp servers, 2 mailbox servers serving production, and 1 server used internally that has smtp and mailbox installed (as well as logger). The master ldap server is currently on one of the production smtp servers. When initially installed, some of the servers were built under 32 bit RedHat and others under 64 bit. I'd like for them all to be 64 bit. In addition, I want to split out the master ldap to its own server and have replicated ldap's on the mta's. Finally, I have a new server I've built to replace the server used internally so I need to do a 32 bit to 64 bit migration on it as well as moving all the mailboxes, logger db, etc over to it.
I expect this to be a fairly complex migration. What is the best/recommended way of performing this upgrade and migration? How can I best do this to minimize downtime to the users? |