Re: Lies and Urban Myths
A previous employer tested their DR a couple of times a year. Sometimes they'd put switch to their backup office location, and make sure everyone could still work OK. Other times they'd switch over to use the backup datacentre.
I'm fairly sure they did the datacentre switch in the middle of the day. While there may have been some sweaty palms as they flicked the switch, it was worth it from the point of view of proving business continuity.
They treated it seriously, and did not hold back from improving things if someone spotted a flaw.
Having said that, it is the only place I've seen it done anywhere near properly.