Configure RAID support

TechPreview

You can configure the support of the software-based Redundant Array of Independent Disks (RAID) using BareMetalHosProfile to set up an LVM-based RAID level 1 (raid1) or an mdadm-based RAID level 0, 1, or 10 (raid0, raid1, or raid10).

If required, you can further configure RAID in the same profile, for example, to install a cluster operating system onto a RAID device.

Caution

  • RAID configuration on already provisioned bare metal machines or on an existing cluster is not supported.

    To start using any kind of RAIDs, reprovisioning of machines with a new BaremetalHostProfile is required.

  • Mirantis supports the raid1 type of RAID devices both for LVM and mdadm.

  • Mirantis supports the raid0 type for the mdadm RAID to be on par with the LVM linear type.

  • Mirantis recommends having at least two physical disks for raid0 and raid1 devices to prevent unnecessary complexity.

  • Starting from MOSK 22.2, Mirantis supports the raid10 type for mdadm RAID. At least four physical disks are required for this type of RAID.

  • Only an even number of disks can be used for a raid1 or raid10 device.