migrate Exchange 2003 and EV 9 to Exchange 2010 and EV10
We now have EV9.0.2 on a Windows 2003 Server and an Exchange 2003 organisation. We are planning to go to a new Exchange 2010 environment. This will first co-exist in the current Exchange 2003 organisation.
I am in doubt now what to do first and what I need:
1- Do I need to upgrade to EV10 first?
2- If I don't upgrade to EV10 and I am ready to move mailboxes from the 2003 mailbox servers to the 2010 mailbox servers, do I 'just' need to create an Archiving Task for the new 2010 mailbox servers?
3- Can EV10 coexist with another, an EV9 installation? I would prefer to install a new Windows Server 2008 64bits server with a fresh installation of EV10 on it and carefully move users per batch to this new installation. Is this possible or what do you recommend?