this post was submitted on 05 Nov 2025
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Just popping in to say raid is not a backup! It is for high availability!

Stuff's expensive, it sucks, I'm not saying you need to spend more than you're able to, I'm just warning you and others that while raid is often considered a pseudo-backup, it's real purpose is high availability, so you can still access your data while your restoring from your actual backups somewhere else.

Best practice is 3-2-1, 3 copies of the data, on 2 different storage mediums, 1 of which is in a different physical location.

But honestly, if you can just get 2 copies, both on hard drives, both in your same house, you're still miles ahead of simply relying on raid.

Backup your data!

Thanks for coming to my TED talk ๐Ÿ˜‚