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How should I do backups?
(sh.itjust.works)
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this post was submitted on 30 Mar 2024
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RAID is not backup. Many failure sources from theft over electrical issues to water or fire can affect multiple RAID drives equally, not to mention silent data corruption or accidental deletions.
Yeah...I've never totally lost my main storage and had to recover from backups. But on a number of occasions, I have been able to recover something that was inadvertently wiped. RAID doesn't provide that.
Also, depending upon the structure of your backup system, if someone compromises your system, they may not be able to compromise your backups.
If you need continuous uptime in the event of a drive failure, RAID is an entirely reasonable thing to have. It's just...not a replacement for backups.
Oh, all my drives are RAID too, mostly for the convenience of being able to use them while I order a replacement for a failed drive and not having to restore from backup once I get that.
Its not, but if the value of the data is low, its good enough. There is no point backing up linux isos, but family photos definitely should be properly backed up according to 3-2-1.