Yes, commercial environments generally have redundant storage, as well.
This would include data centers and the cloud for storage? Or is it just on the personal computer itself?
I am a computer repair technician.  Business has been tough lately because no one buys computers anymore! Oh, that's too bad. Do you maintain servers as well as other computers? My focus was initially on home computers.  I've had to diversify and learn more about commercial systems and servers. I see? So you don't see much home computer customers, even though they are generally used by nontechnical people? No, because more and more families are opting instead to use their phones and tablets. Do you know anything about the history of home computers? I know a little, like that home computers had better graphics than the business computers of the day. Do you think that's still true? Yeah, that's probably true. I guess a lot of people are using desktop computers for gaming. It is an emerging market, maybe I should also focus on those types of machines. Thanks for the idea! You're welcome! Do you also do memory expansion in your job? Yeah a lot of commercial companies need more storage. Everything is now stored digitally, so that means a lot of upgrades to infrastructure, mostly memory and speed.
It generally includes redundant or backup power supplies, redundant data communications connections, environmental controls (e.g.