Comment on What are good harddrives to use with serves

• femtech@midwest.social ⁨3⁩ ⁨months⁩ ago

  I just keep adding 2 more drives as it gets full. Not sure if that’s the best thing.

  source
• TheHolm@aussie.zone ⁨3⁩ ⁨months⁩ ago

  I would not trust these kind of dives in the mirror. IMHO RAID6 is the only way.

  source

  • avidamoeba@lemmy.ca ⁨3⁩ ⁨months⁩ ago

    Due to risk of failure or risk of data corruption because the mirror can’t tell which drive is right when there’s a difference?

    source

    • TheHolm@aussie.zone ⁨3⁩ ⁨months⁩ ago

      ZFS or BTRF mirror will know which side is at fault due to checksums. I’m more concern about simultaneous falures of two disks. Rebuilding of a RAID puts lots of pressure on remaining disks, so probability that remaining one dies too is much higher. with RAID6 3 disks need to die to lost date, which is less likely but not impossible.

      source
    • turmacar@lemmy.world ⁨3⁩ ⁨months⁩ ago

      The second one.

      Mirroring is good for speed and redundancy, but a storage mechanism with parity checks will all ways be more recoverable. And depending on the array you have far more storage available.

      source

      • avidamoeba@lemmy.ca ⁨3⁩ ⁨months⁩ ago

        I think data checksums allow ZFS to tell which disk has the correct data when there’s a mismatch in a mirror, eliminating the need for 3-way mirror to deal with bit flips and such.

        source
  • peregus@lemmy.world ⁨3⁩ ⁨months⁩ ago

    IMHO RAID6 is the only way.

    Or SnapRaid

    source