We currently have a Microsoft Exchange 2000 environment. We only have one exchange server and we want to upgrade it to at least an Exchange 2003 env.
Current Exchange is Exchange 2000 Enterprise. We want to migrate to Exchange 2003 Enterprise.
We have a new server with a clean install of Windows 2003 server with SP2 installed. How would we go about doing a slow migration of users and keeping both exchange up and running so that we do not have any downtown while the transfer is in progress? we cannot afford to have any down-time, is this even possible?
Any help would be greatly appreciated.