I'm looking for some guidance on an existing project.
We have a remote office with its own Exchange / Unity 4.x servers. This site's servers are planned to be 'collapsed' - subscribers and mailboxes to be moved to HQ site.
At the HQ site, there exists the main Unity 4.x server, and also a new Unity 7.x server that will eventually handle all subscribers.
Goals are to decomission the remote Exchange/Unity boxes and have mailboxes moved with users on the new Unity 7.x.
My questions are:
Would it be best to use the GSM to move the subscribers from 'remote' Unity 4.x to 'HQ' Unity 4.x, then use the COBRAS tool to bring them from HQ Unity 4.x to HQ Unity 7.x?
Would it be best to just use COBRAS tool to move subscribers from remote Unity 4.x to HQ Unity 7.x?
Can GSM do everything, or do we need both tools?
Not sure of the best way to accomplish this with the least amount of pain/disruption.