Almost nobody (for any reasonable definition of nobody) has immediate redundancy for their data center. I've worked for three $1B+ companies whose entire busin

Almost nobody (for any reasonable definition of nobody) has immediate redundancy for their data center. I've worked for three $1B+ companies whose entire business was based on their data center being up and running - and none of them would have returned to service in less than 48 hours if a data center had gone down. "Not being prepared for them is unforgivable" - would mean that 99% of business do not deserve forgiveness. It just doesn't make sense to have that kind of redundancy for such a rare event for all but a very, very small minority of businesses. (Telecoms, Google, Stock Exchange, 911, etc...)