Re: RAID & Backups
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.
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