Raid 5 succesfull recovered - dev/md0 (Mirror) still degraded

  • Hello everyone,

    a hard drive disk needed to be changed.

    Afterwards I recovered my raid 5 and everything is fine, but in the raid overview there is listet another raid.

    /dev/md0 consists of the three hard drive disks, which are still in the raid5.

    But I don´t know what the Mirror raid is mirrowing.

    Also I can´t recover it.

    Can anyone explain what this is and what to do with it.

    Thanks a lot.

  • The initial array was created by a WD My Cloud

    That would explain it, OMV does not use partitions when creating an array, so /dev/sdb2 is a partition, the new drive you added /dev/sdc is the complete block device (drive). That is what OMV uses to create an array, your mirror was probably some sort of 'ghost' and the reboot removed it.

    Raid is not a backup! Would you go skydiving without a parachute?

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