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mdadm

RAID management utility. More information: https://manned.org/mdadm.

  • Create array:

mdadm --create {{/dev/md/MyRAID}} --level {{raid_level}} --raid-devices {{number_of_disks}} {{/dev/sdXN}}

  • Stop array:

mdadm --stop {{/dev/md0}}

  • Mark disk as failed:

mdadm --fail {{/dev/md0}} {{/dev/sdXN}}

  • Remove disk:

mdadm --remove {{/dev/md0}} {{/dev/sdXN}}

  • Add disk to array:

mdadm --assemble {{/dev/md0}} {{/dev/sdXN}}

  • Show RAID info:

mdadm --detail {{/dev/md0}}