I have two business units that I need to setup an AD trust(win 2008) between the two different domains, however one of the sites has a DR solution in place (We replicate the DC's etc to an offsite location). So in the event of DR, it means that site will have to fail over, which means the DR site has no access to the other domain, which is fine, in a DR situation we are ok with this.
But can anyone think (or first hand experience) know of any major issues this setup would have?