I've recently upgraded to Exchange 2010 from 2003 as the first phase of an email upgrade. In the next phase I would like to make exchange highly available to our end users. The current exchange environment is hosted in house running on VMware. We have a Websense email filter on the front end with one exchange server behind it that has all roles installed. I also have a datacenter with some rackspace connected via a VPN back to our main site where I'd like to host the other exchange server.
If our primary site fails for any reason I want the end users to be able to access their emails. I know I will need to setup a database availability group but I'm not too clear on how I get from where I am to where I want to be. I'd very much appreciate an overview of the general steps I would need to take to set this up and perhaps some more detailed clarifications since this is very new to me. Many thanks in advance for any help you could provide!