In the mid-2000's, our organization started to get serious about disaster recovery. By that time our core application was an e-learning application that was heavily used (a hundred thousand students on a typical day). That app became critical to our mission.
To bootstrap a DR capability we paid consultants for what was at best a craptastic DR plan. The plan was not implementable under any realistic scenario.
The consultants ignored our total lack of a DR site, insisted that we could buy servers overnight, and that because every server had its own tape drive, we could hire an army of techs from Geek Squad and recover all servers simultaneously from individual tape backups. Of course we had no failover site, no hardware, and we had tape-changers and a Legato infrastructure that streamed and interleaved multiple backups onto a single tape instead of individual tape drives in each server. I couldn't imagine buying dozens of servers and successfully recovering in any reasonable time frame. The consultants formally presented a 56 hour RTO to our Leadership, when my own gantt charts showed a 3-week RTO after we had a DR site leased, a data center network built, and hardware purchased and racked. So I pushed back hard - and stopped getting invited to the meetings.
They used nice fonts though. Give them credit for that.