Exchange upgrade two sites from 2007(1st site) and 2003 (2nd) site to Exchange 2010
Posted on 2011-03-15
We have two Exchange sites and would like to upgrade both sites to Exchange 2010.
The local site is the US is running Exchange 2007 and the remote site is running in Sweden is running Exchange 2003. The local site has an old 2003 server acting as the bridgehead server between the two sites. All three servers are virtual machines running in either vSphere 4.0(ESX) or 4.1(ESXi).
US site has 2008R2 domain controllers only and Sweden site has 2003 domain controllers only.
What the best way to plan this upgrade? Which site needs to be upgraded first? How/when to remove the old bridgehead server?