If this document does not correspond to your current software version, you can go to Download Center to find other available document versions.


QTS 5.0.x

Download (PDF)

Expanding a RAID Group by Replacing all Disks

You can increase the maximum storage capacity of a RAID group by replacing all member disks with higher-capacity disks. This operation can be performed while the RAID group is online and accessible to users.

  1. Go to Storage & Snapshots > Storage > Storage/Snapshots.
  2. Select a storage pool or static volume.
  3. Click Manage.
  4. Select a RAID group of type: RAID 1, RAID 5, RAID 6, RAID 10.
  5. Disable all hot spares and global hot spares assigned to the RAID group.
  6. Select Manage > Replace Disks One by One.
  7. Select a disk to replace.

    Ensure that the capacity of the new disk is greater than the capacity of the disk that it is replacing.

  8. Click Change.

    The disk description changes to Please remove this drive.

  9. Remove the disk from the drive bay.

    The NAS beeps twice. Then the disk description changes to Please insert the new disk.

  10. Insert a new disk into the same bay.

    The NAS beeps twice. Then the status of the disk and RAID group change to Rebuilding.

  11. Wait for rebuilding to finish.

    Do not remove any disks while the RAID group is rebuilding.

    The disks status changes back to Good.

  12. Repeat the previous steps until all disks in the RAID group have been replaced.

    The Expand Capacity button is enabled after all disks have been replaced and rebuilding has finished.

  13. Click Expand Capacity.

    A confirmation message appears.

  14. Click OK.

    The NAS beeps and the RAID group status changes to Synchronizing.


    Do not power off the NAS or remove any disks while synchronization is in progress.

The RAID group status changes to Ready.