On Wednesday, September 3, 2025 10:53:53 AM Central Daylight Time alain williams wrote: > We were talking about RAID a few days ago and how they are different from > backups. > > • RAID helps to protect you against hardware failure, the idea is that you > can have a disk fail and still continue running, then replace the broken > disk and rebuild to give you a protected system. [...] > Sorry if I sound like a preacher, hopefully this will someday save the > backside of someone who reads this.
I like to think of redundant RAID as buying you some time to repair a failure before it interrupts services. It's not really a backup at all. You can still have some kind of software/firmware failure lose the data with redundant RAID in place. There needs to be a copy somewhere else if the data is important.
