You can replace all hard disk members with a larger capacity hard disk to increase the storage capacity limit of the RAID group.

This operation can be operated online without interrupting data access or any NAS services.

• Navigate to Main Menu → Storage and Snapshots → Storage/Snapshots.
• Make sure that all hot spare hard drives and global hot spare hard drives assigned to this RAID group are disabled.
• Choose a storage pool or a single statically configured volume.
• Click Manage.
• Choose a RAID 1, RAID 5, RAID 6 or RAID 10 group.
• Select Manage → Replace hard drives one by one.
• Select the hard drive to be replaced.
• Confirm that the capacity of the new hard drive is greater than the capacity of the hard drive to be replaced.
• Click Change.
  • This will display Please pull out this hard drive.
• Remove the hard drive from the slot.
  • The NAS will beep twice.
  • This will display Please insert a new hard drive.
• Insert the new hard disk into the same slot.
  • The NAS will beep twice.
  • The status of the hard disk and RAID group will display Under reconstruction.
• Wait for the reconstruction to complete.

  WARNING: Do not remove any hard drives during the RAID group reconstruction process.

• Hard drive status changed back[good].
• Repeat the above steps to replace all hard disks in the RAID group.
• After replacing all hard drives and the rebuilding operation is complete, you can use the Expand Capacity button.
• Click Expand Capacity.
• The confirmation message appears.
  • Click OK.
• The NAS will beep, and the RAID group status will change to synchronizing.

  WARNING: Do not turn off the power of the NAS or remove any hard drives while the hard drives are being synchronized.

• The RAID group status will change to Ready.