The article is much too simplistic in regard to changing all the places where the previous server name is hardcoded. That process is an absolute nightmare. We actually ran into a situation where we did a DR to a test server, changed the server name in our jobs everyplace we could think of (msdb, job steps, maint plans, etc.). Still we found that the jobs were running on the original server. Microsoft said it's a reported bug but there's no solution yet. LOL (meaning lots of luck!)!