3 ms·

RAID is not a backup. ... Especially when your RAID is busy rebuilding for N hours every other week.

• daveguy 11y ago
  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.
  • DDub 11y ago
    Unless you're mirroring across more than 2 drives, you have an AID setup.
    • daveguy 11y ago
      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.
      • Sanddancer 11y ago
        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.
        • daveguy 11y ago
          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.