I'm currently coming up with a plan to centralize my Unity UM installation. I currently have a central office which has a Unity UM 4.0(4) cluster, as well as CCM 4.1(3). CCM is centralized, but each office has a full blown Unity 4.0(4) server w/Exchange 2003.
The connection between each office and the central office is a full p2p T1.
I have already moved a smaller office, which was able to be done in a weekend. The Exchange mailboxes were moved first, which is what takes the most time. After they were moved, I moved the Unity accounts. It was relatively flawless.
The problem that I am facing is that I have to move an office with 50 users and 6GB of email, which will take 4 days over a T1. With Exchange, I could move a user at a time, no problem. Is there a way that I could move a single user at a time with Unity? The obvious problem is the pilot number going to the old Unity server until all users are moved.
What options do I have to get this large office done?
If the Unity servers are (or can be) digitally networked, you can use the Global Subscriber Manager to move individual or groups of subscribers.
Global Subscriber Manager Help
Using digital networking, you can also enable cross-server logon to allow users to continue to dial a single pilot number even though their account is on another Unity box.
Hope this helps. If so, please rate the post.