Do you need software redundancy if you have RAID 1?

Question

System administration

Let's say we store a lot of WinRar archives with a redundancy of 10% (software, recovery data).
And we store all these archives on RAID 1.
Does WinRar have a 10% redundancy or RAID 1 in this case is already completely enough?
Taking into account that backups of these files will be in 3 places anyway

Answer 1

There is not much redundancy. If you can, keep

Answer 2

Does WinRar have a 10% redundancy, or is RAID 1 completely sufficient in this case?

The archive can break even without disk errors.

Answer 3

Even RAID1 can be hit by lightning... then nothing will make sense if there is no backup in the safe ))

Answer 4

None of the known types of RAID technology (except perhaps only RAIDZ under certain conditions) does not guarantee the integrity and safety of data.