We all know the story. Calamity, large or small, befalls data center. IT scrambles to save the day by ensuring systems fail over rapidly and functionally. Nowadays, modern IT DR systems are, to a great extent, cloud-based. So the failover happens five seconds later to a data center at the cloud in, say, Houston. After checking a few configurations, updating some DNS tables and ensuring things are copacetic, IT wipes the sweat from their collective brow. Whew. Crisis averted. That hero tale never gets old – at least, not as long as the memories of tape-backups and decamping to New…