Expanding a Storage Pool By Adding a New RAID Group

You can create a new RAID group and then add it to the storage pool. The total capacity of the new RAID group appears as additional free space.

QTS writes data to a storage pool that contains multiple RAID groups in a linear manner. This means that QTS writes data to a RAID group until is it full before writing data to the next RAID group.

Warning:
  • If a storage pool contains multiple RAID groups and one RAID group fails, all data in the storage pool will be lost. Ensure that you have a complete data backup plan.

  • To expand a RAID 50 or RAID 60 pool, you must create a new RAID 50 or 60 group with the same number of disks and sub-groups as the original pool. It is not possible to just add additional sub-groups.

  1. Go to Main Menu > Storage & Snapshots > Storage/Snapshot.
  2. Select the storage pool that you want to expand.
  3. Click Manage.

    The Storage Pool Management window opens.

  4. Click Expand Pool.

    The Expanding Storage Pool window opens.

  5. Select Create and add a new RAID group.
  6. Click Next.
  7. Optional: If you want to use disks in a connected expansion unit, select the expansion unit from the Enclosure Unit list.
    Warning:

    If the selected expansion unit is disconnected from the NAS, all data in the storage pool will become inaccessible.

  8. Select one or more disks.
    Important:

    For RAID 50 or RAID 60 pools, the number of selected disks must be equal to or greater than the number of disks initially used to create the pool.

  9. Select a RAID type.
    Important:
    • If the storage pool contains a RAID 1, RAID 5, RAID 6 or RAID 10 group, the new RAID group must also have one of the mentioned RAID types.

    • For RAID 50 or RAID 60 you cannot select a different RAID type.

  10. Optional: Select the disk that will be used as a hot spare for this RAID group.
  11. Click Next.
  12. Click Expand.
    A confirmation message appears.
    Warning:

    Clicking OK deletes all data on the selected disks.

  13. Click OK.

QTS creates the new RAID group and then the RAID group starts rebuilding. The capacity of the new RAID group appears as free space in the storage pool after RAID rebuilding is completed.