Likely an easy question.
If we install multiple instances of SQL Server 2008 R2 (all will be the same version) on a single server, how would we go about installing updates to SQL, such as a Service Pack? Would the SP installer ask which instance we want to update, and require us to therefore update each instance separately, or would it install to all instances at once?
Ditto for any security updates and the like.
Thanks,
Jason A.