I appreciate your time reading my question.
currently we have one AD site with a CAS, Hub and 2 Mailbox Servers in DAG. in the near future we going to move this out of our current location to a new Location in another state leaving all users still in the old office. So we going to have 2 AD sites. Site A for users and SIteB with all servers. Management wants email up and running during the move. How should i proceed this?
I am planning to install cas/hub/mbx on a same server part of the DAG in SiteA. failover the database to new server and point users to new CAS or change DNS. Once done, fail everything back to SiteB and this will be just a DR server. i guess i also need to configure a lternate witness server. Is this seems the best approch?