I am setting up to migrate a client from SBS 2008 Exchange to Server 2008 R2 with Exchange 2010.
I am following the instructions found here: http://technet.microsoft.com/en-us/exdeploy2010/default.aspx#DeploymentCheckList/ee958302/2007
As I was going back and forth getting the prereqs on, I accidentally left all roles checked on the actual installation.
Thus I am on the step to install the CAS, but instead I installed all of the roles, CAS, Hub Transport, and Mailbox Server.
I figured, no problem I would just uninstall and continue from there. I was able to uninstall the hub transport without issues, but when attempting to uninstall the Mailbox Server it errors having already created a "DiscoverySearchMailbox" that must be removed before removing the Mailbox Server role.
My question is, can I continue forward ignoring the fact that I installed the roles earlier than neccessary, or should I go through the process of removing the Mail Server role, so that I can continue the step by step as was intended?