Overview & Benefits
The migration to Exchange 2010 consists of installing new Exchange 2010 servers (Client Access, Hub Transport, and Mailbox) into the existing Exchange Organization, alongside the existing Exxchange 2003 servers. None of the URLs for client access, such as webmail.sc.edu, imap.mail.sc.edu and asmtp.mail.sc.edu will change. They will get re-pointed to the Exchange 2010 servers.
After your mailbox is migrated to an Exchange 2010 mailbox server, your mailbox server will change from CAE145EVSP04 to CAE 145CARP01 (for example). This is a new feature called Client Access Server Array (CAS Array), which load balances the front-end connections to the mailbox servers. Your Outlook client will automatically make the change to your new mailbox server.