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RAID is not a backup.

... Especially when your RAID is busy rebuilding for N hours every other week.



Well RAID 1 would be a backup if you yanked out and replaced a drive every week. In that case it would be a weekly snapshot.


Unless you're mirroring across more than 2 drives, you have an AID setup.


You are incorrect. RAID 1 is a mirror setup. There are two drives with exactly the same information. One of the two drives is redundant. RAID 1 does not include striping and only requires 2 drives for redundancy.


I think what DDub is getting at is that there is no redundancy for the data received while the disk is mirrored to the new twin. For that, you'd need a mirrored pair plus a drive to yank out as the backup.


Ah, that's a good point. When you first put the fresh drive in it would be AID for a while... and no one likes AIDs.




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