Customer has UM ver. 4.0(2), off-box EX5.5. They want to add an EX2003 server to begin a gradual migration of their email users. I hear the schema changes for EX2003 will break Unity as is. Is this true? They have purchased a replacement server and the goal is to upgrade them to 4.0(5) on this server. My plan would be to install the new server (new name, IP) to ver. 4.0(2), DiRT import, upgrade to 4.0(5). They can then extend schema, install EX2003, then I run Mess. Store Cfg. Wizard to change message store.
Soliciting comments from anyone who has been there. Thanks!
I'm not sure that any of the schema changes necessitated by Unity would break Unity per se. However, if there are multiple versions of Exchange with Unity subscribers' mailstores on them, then Unity must be partnered with the most recent version. In this case if there are Unity subscriber mailboxes on Exchange 5.5, Exchange 2000 and Exchange 2003 all in the same AD domain, Unity should be partnered with the Exchange 2003 server.
I think your general plan should work, if after you perform the upgrade to Unity 4.0.5, you follow the link above to cover the Exchange 5.5 to Exchange 2003 upgrade (as it relates to Unity's connecting to Exchange).
It wouldn't hurt to take another DiRT back up after the upgrade to 4.0.5.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.