Exchange upgrade 2003 > 2010
I am currently looking at upgrading our Exchange server from 2003 to 2010. (Not in an Educational Enviroment btw)
I've been having a read around and I have been getting slightly confused with some conflicting information on how many servers to have, whether or not to virtualise, best practice set ups, hardware specs etc. We currently have around 200 users who uses e-mail on around 16 branches, with smartphones, ipad, OWA connectivity.
Can anyone offer any advice on the issue? Or any problems they encountered during their upgrade process? Thanks.