We have DR plans for our high priority systems but rarely test them. I recently approached the team of one of these systems that I thought would be most likely to want to test a full failover and they agreed. There were a couple things that we found didn't repoint automatically and so far we've remediated those and done a quick, off-hours failover to confirm that and are planning another full failover to complete the testing.

I'm hoping I can use this to convince the other application owners that their apps should be tested as well so we're not dealing with cleanup in an emergency situation.