I have two 4.5.6 NE machines setup right now with LDAP replication and a good number of users.
I want to eventually get to running version 5. I am thinking about bringing up a new separate box running version 5.0.2 and want to know two things.
1) Can you add a 5.0.2 server to join LDAP replication with 4.5.x boxes? I don't think so but wanted to confirm.
2) If you cannot share LDAP with 4.5.x, how can I migrate boxes from an completely separate 4.5.x box to a 5.0.2 box? If they were connected with LDAP I could use zmmailboxmove, what other solutions do I have without that?
I'm scared of migrating the 4.5.6 box in place because the "worst case" scenario has me reinstalling and doing a restore from backups. The problem is that the backups are sitting at like 200GB right now and that means my service is offline for 12+ hours.
Also if I do the upgrade in place, I have to bring down both servers and do the upgrade simultaneously, correct?