Hard Drive Failure Rates

Most enterprise hard drives are 10 to 50 years, but what that means in real life is a cluster with 10,000 disks should have one disk failure per day. The quality rate, they call these things the MTTF's the meantime to failure. If your whole hard drive crashes or information isn't retrieval because of those, then I guess is that a failure at that point? Yeah. At that point it is if it, if it truly could put your done, right? Like, Hey, don't write to this sector because I can't get to it. Um, you know, skip and even air cracking bits and stuff like that's crazy. How good they work for how poor