A backup is only a backup when you have restored from it successfully. Until then, it's no better than garbage.

A disk raid is only a raid when you have tried pulling a disk and having the raid successfully rebuild (while running in production!).

I once had a system administrator who didn't dare pull a raid disk while in production. After that, has wasn't a sysadm in my eyes, he was a lottery gambler.

Being paranoid doesn't mean nobody is following you.