...whether you know that it won't come up, even if you're arse is covered by secured unheeded warnings from you to the Management, you still have to piece it all together using whatever is available.
Unless, of course, the first thing that will happen after a disaster is your resignation hitting the temporary desk of your manager.
Which is exactly what a number of sysadmins at a major UK financial institution told me would happen a number of years ago if their primary data site was destroyed. They knew the plan would work (it had been tested pretty well, but piecemeal), but they did not fancy the long nights, location disruption, bickering about what sequence the business workloads needed to come back in, and the almost complete inability to fail back to the primary site if it was resurrected.
Of course, professional system administrators would not do this, would they?