We will be upgrading from exchange standard 2003 to standard 2010. A new server is being order of course with 08 standard as well. We currently have 2 existing 2008 R2 servers on the domain and the domain functionality mode is in the 2008 state.
Basically what i am looking for is some good information about the migration process. I have read both servers are brought up and somewhat functioning together. One of my main concerns is not causing too much down time since right now we use OWA on a dmz and thats what our iphone people connect to. But from what our server sales rep has mentioned is that owa runs on the exchange sever itself in our type of situation with under 100 mail boxes.
Can someone comment on the migration aspects or exchange and owa, also if you are using a past article or post that is great too.