Have a look at what's described in the question about "Brief outage planned for Wed, May 3, 2017 at 0:00 UTC, 8pm US/Eastern (like a fire drill for computers)", which is about testing of the existing "Disaster Recovery Planning" (= DRP) of the entire family of SE sites.

If you were in charge of this, what would be your recommendations to improve these kinds of DRP-testing in production?