Okay, let's assume that you have a bunch of Blu-ray disks with backups of your databases - for a round number suitable for some enterprise, let's assume a hundr

Okay, let's assume that you have a bunch of Blu-ray disks with backups of your databases - for a round number suitable for some enterprise, let's assume a hundred separate systems, but you want to restore just the important stuff, so a dozen of them. How do you do that if all your infrastructure is toast? Also, how do you restore a cluster of interconnected systems from different vendors? I mean, all of that is done, but it's far from easy or trivial, and if you're not properly prepared, backups alone aren't enough as it'll take a lot of time and work until you have the systems functional and properly interconnected so what you can restore the data to them. Those systems aren't simply deployable overnight, and I would presume that for at least half of these systems the enterprise never ever had the capability to deploy them, the initial install was and configuration done by a combination of vendor engineers and outside consultants and took six or more months. Sure, you'll recover the data eventually, but you'd rather pay a ransom to avoid as much downtime.