I know how RAID work and prevent data lost from disks failures. I want to know is possible way/how easy to recover data from unfunctioned remaining RAID disks due to RAID controller failure or whole system failure. Can I even simply attach one of the RAID 1 disk to the desktop system and read as simple as USB disk? I know getting data from the other RAID types won’t be that simple but is there a way without building the whole RAID system again. Thanks.

  • Possibly linux@lemmy.zipEnglish
    101·
    2 months ago

    You really do not want hardware raid. You want software raid like LVM or better yet, ZFS.

    Do your own research. Keep in mind raid isn’t a backup. It is only for convenience.

    • renzev@lemmy.worldEnglish
      51·
      2 months ago

      A lot of “hardware raid” is just a separate controller doing software raid. I thought I lost access to a bunch of data when my raid controller died, before I realized that I could just plug the disks directly into the computer and mount them with mdadm. But yes, hardware raid seems a bit pointless nowadays.

        • NotSpez@lemmy.worldEnglish
          13·
          2 months ago

          In my experience, using spinning disks, the performance is very poor, and times for scrub and resilver are very long. For example, in a raidz1 with 4x8TB, scrubbing takes 2-3 weeks and resilvering takes almost 2 months. I must also add very poor performance in degraded state. This is a very old post, but things are still the same.