You're kidding right? RAID is only good for dealing with HW failures, there are many more kinds of SW failure that can screw you and leave you with nothing, whi

You're kidding right? RAID is only good for dealing with HW failures, there are many more kinds of SW failure that can screw you and leave you with nothing, while having a perfectly good raid. Replication isn't a backup because if you screw up your dataset, well that screwup just got replicated.