Let us look at the error qnap in degraded mode not rebuilding in detail. With the support of our Server management support services at Bobcares we will now learn how to deal with the error.

Issue: qnap in Degraded mode not rebuilding

Here are some methods we may take if Rebuilding does not begin when a new drive is inserted in degraded mode.

The methods below only apply to RAID in degraded mode. This signifies that the number of drive failures is within the RAID level’s allowable number (for example, RAID 5 = 1 drive failure, RAID 6 = 2 drive failure). If the RAID is not in use (offline).

In rare circumstances, the RAID rebuild may not begin automatically. If this happens, we can use the new drive as a spare disk initially. After this, the reconstruction will begin immediately.

Please follow the procedures below to setup the new drive as a spare disk. This is the first in line set sot remove the qnap in degraded mode not rebuilding errr:

1. Firstly, connect to the NAS using a web browser.
2. Snapshots and Open Storage
3. After that, go to Storage/Snapshots.
4. Click the “Manage” button after selecting the Storage Pool or Static Volume.
5. Click “Manage” and then “Configure Spare Disk” after selecting the degraded RAID group area.
6. Finally, choose the new drive and press the Apply button.

The RAID will immediately begin rebuilding, and regular function will resume once it is finished.

Issue: qnap in degraded mode not rebuildin: More troubleshooting

A RAID array in “Read-Only” mode generally means that “many” drives have failed. The RAID array is set to “read-only” mode to allow us to backup the data before restarting.

RAID5 only allows for “single” disk failure. We appear to have lost both HDD4 and HDD1.

Check to see if the RAID was trapped in read-only mode despite the presence of a healthy disk. Then here we used the command line to force the RAID to resync (which pushed it into read/write mode) and then re-added HDD4.

The following are some instances of commands that we use here:

mdadm --readwrite /dev/md0
mdadm --add /dev/md0 /dev/sdd1

This is the final steps in torubelshooting the qnap in degraded mode not rebuilding error.

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Conclusion

To sum up we have now seen how to deal with the qnap in degraded mode not rebuilding error. With the support of our Server management support services at Bobcares we have now gone through the whole process of how to remove the error.