> Is it possible to recover a Moodle from parts if you are using repositories? By that I mean you have a dump of the database with a matching copy of the Moodle folder and the moodle data folder
I don't see a reason why it should break.
> and for disaster recovery purposes you have to recover everything onto a new IIS set up.
Well, IIS and the whole Microsoft empire is a different story. I hope its citizens can help you.
> I think the repository screws up and won't let you open the page to manage repositories, or at least that is what happened when I recovered to a different site name,
Did you have problems with http://docs.moodle.org/24/en/Moodle_migration ?