I am planning for a two-server Exchange 2010 DAG and am a little stumped at what I should use for the Witness Server (quorum).
1) Is a witness server the same as the Hub Transport role?
2) Does it have to be installed on an Exchange 2010 Standard or Enterprise machine? Or can I use a standalone non-Exchange machine?
3) In terms of licensing, do you know if it requires another Exchange license just for this?
