I have found these calculators work well for projecting the performance and capacity of various RAID levels:
Some other guy mentioned RAID 10 isn't a backup strategy; he's correct (no RAID level is), however one thing to keep in mind is that when his RAID 0 array dies, he'd better hope his back-ups are all up-to-date and restorable. With just about any other RAID level, you get an opportunity to replace the dead / dying drive first, start rebuilding, and KEEP ROLLING, with no need to screw around with backups at all and no human interaction even required if your array has a hot spare configured. Yes, technically that is availability, but I'd sure as hell take it over "fuck, there went one drive of my RAID 0 stripe, better hope I can tolerate this downtime and that my last backup set had everything I needed on it." RAID may not be a backup strategy but it's absolutely another layer in place before you need to restore from backups (as long as it's not RAID 0).
what evidence do you have that the politicians have been bought off?
I'm glad you asked, as that gives me a great reason to post a link to Simon Garber. As Wikipedia says, "While in Russia in 2001, Garber became friends with Patrick Daley, the son of long-time Chicago mayor Richard M. Daley. City officials tightly regulate all aspects of medallions ownership, granting permission to purchase medallions on an individual basis. Within a year of meeting Patrick, Garber quickly acquired over 300 Chicago taxi medallions. Garber also hired Mayor Daley's former chief of staff Gery Chico as a City Hall lobbyist. In 2003, Garber used this political capital to start the Chicago Carriage Cab Company and was granted permission to operate the taxi business in Chicago. Within six years, the Chicago Carriage Cab Company had amassed over 800 medallions, making it the largest taxi company in the city."
This is but one example, from one city. A little Googling will easily reveal many more examples.
And yet, tens of millions of people around the world think it's safe enough that they use rideshare apps over and over, every day. And tens of millions more think that they make enough money doing it that they choose to keep driving for Uber, and Lyft, and the other rideshares. Why? Because to them, it's better, cheaper, and more convenient than regular taxis.
Call Uber all the names that you want, but the taxi companies better figure out that they've got to compete with the rideshare services or they'll soon be obsolete. You can't litigate away technological advances, nor can you prop up a dying business model forever. The rideshare genie is out of the bottle and he's not going back in.
//GO.SYSIN DD *, DOODAH, DOODAH