Unity 4.0 (2) and /ForestPrep for Exchange 2003

We plan to upgrade our Active Directory in Windows Server 2000 and Exchange 2000 to Exchange 2003 and Windows Server 2003 AD network. We currently have two unit 4.0 (2) servers (Unified Messaging) in two separate locations, each serving a different group of offices. All in all, we have more than 1,000 users in 5 different locations. All these users and locations upgrade to Windows 2003, Exchange 2003 and unity 4.0 (4) at the same time is not an option. Therefore, we would gradually migrate each location to Exchange 2003, Windows 2003 and unity 4.0 (4).

I understand that unity 4.0 (4) is the recommended version to use with Windows 2003 and Exchange 2003, but I've also read in Cisco documentation as 4.0 (4) unit when running on Windows 2003 requires that you are already running Exchange 2003. What confronts a dilemma in that we have separate locations of mutiple supported by one server shared unity and we simply cannot risk all these sites simultaneously to unity 4.0 upgrade (4), Server 2003, and Exchange 2003. So, what would be the best strategy to go where we want to be? This brings me to the following questions:

a. If we run / Exchange 2003 ForestPrep against our field now even if we are always unity 4.0 (2)?

b. can we begin to introduce Exchange 2003 servers in each of our branches (administrative groups & routing Exchange) while staying at unity 4.0 (2) provided that these servers are not designated as a partner of unity and without voice mail server or connectors of the unit (for example, unity voice bridge connector) are on these servers?

c. would make sense to upgrade the servers of the 4.0 unit (3) first and then move to unity 4.0 (4) once all the Exchange servers in all our branches have been improved in Server 2003 and Exchange 2003? This interim update seems to give us more flexibility in our path to upgrade its operating system to Microsoft Exchange server version requirements are less onerous

Windows 2003 is not necessary for the 4.0 unit (4). Likewise, it is not recommended because there is evidence of the way in which Windows 2000 with the unit, but we do support Windows 2003 if the client really wants to use it. We ship the unit on Windows 2000 and that's what we recommend at this time. No functionality is lost under Windows 2000.

Officially we do not support have all Exchange 2003 servers or even execution of ForestPrep if you have lower than 4.0 (3). That said, the only flaw we've never seen this is when the unit is connected under the local system or when the subscriber accounts are on Exchange 2003 servers. You wouldn't be the first customer to do so and it should be fine but really understand that it is not technically a Cisco tested and taken in charge of the configuration.

Thank you

Keith

Tags: Cisco Support

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