Does URE apply in non-RAID setups?

According to this article (http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/) if you have a RAID 5 setup and one of your drives decides to die you would replace the dead one with a new one and try to rebuild but statically speaking based on the unrecoverable read error rateURE you will more than likely run into a bad sector which will cause your rebuild to fail and some data will become unrecoverable.

But if this is true doesn't that mean that even if the hard drives were not run in RAID and one drive failed then statically speaking one of the remaining drive has a bad sector at this point and also have some unrecoverable data?

Does that mean URE should also be a consideration in non-RAID setups?

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