Originally Posted by the_beast
approximately 1 - 20 years.
LOL, too true. But it really should be more like 1 day - 20 years.
There's really no point in considering measuring it, and it depends on what you're talking about. You can have a drive that doesn't sustain catastrophic failure for many years, but keeps having write/read errors (technically the drive still works). What's the metric? 1 incorrect read/write in 1,000,000, or whether the drive simply powers on and functions? Whether it turns on at all?
There are so many things to consider, which is why you never really see info on this, because it's meaningless to try to quantify, and there are too many physical parameters to take into account.