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this post was submitted on 24 Aug 2023
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The only real advantage of RAID1 is that in some cases you get 2x the read performance. But doing snapshots where you get backups that include changes is more powerful than RAID or a volume copy.
another advantage is not needing to restore from backup when one drive fails. RAID5 oder 6 would be better but does need more than two drives, so with only two RAID1, snapshots and backup of those snapshots is best (0.02€)