Eirikur Eiriksson (4/24/2015)
Quick trick, in SSMS press CTRL+ALT+G to view Registered Servers, if they are grouped you can right click on the group, new query and that instance of the query will be executed on all servers in that group.😎
I've known that, though I'd use Red Gate's MultiScript to do it. In this case, I wanted one machine for testing, but that would work for multiple instances.