====== NAS - QNAP - Replace all hard drives to expand the RAID group size ======

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.

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  * 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. <WRAP important>
**WARNING**:  Do not remove any hard drives during the RAID group reconstruction process.
</WRAP>
  * 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**.  <WRAP important>
**WARNING**:  Do not turn off the power of the NAS or remove any hard drives while the hard drives are being synchronized.
</WRAP>
  * The RAID group status will change to **Ready**.