My Drive has Failed, What Should I Do?
Applied models:
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All NAS Series
Applied Firmware:
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All Firmware Versions
If the drives in your NAS have failed, they will need to be replaced. If the storage is in RAID 1, RAID5, RAID 6 or RAID 10, and the number of failed drives are below the allowable number for each of the respective types, the RAID will automatically start rebuilding the data once the drive is replaced.
You would be able to identify the failed drives from Storage & Snapshots > Disks/VJBOD page, the failed drives would have an Error or Warning Status. You should also receive notifications in the System Logs indicating drives have medium error, this can be found in the NAS Control Panel > System Logs.
QNAP NAS supports hot swapping drives. Once the faulty drives are identified, the drives can simply be unplugged and then plug in the new drive. The system would then start the rebuilding automatically.
Recommendations:
Although RAID could minimize the chance of data loss, is it still possible that multiple drives may fail in a short period of time, or the unit itself may be damaged. Thus to avoid potential data loss, it is always recommended to have a full backup of the data on another device or location. You could use our backup solution to perform this, more details can be found in the link below:
You could also set up scheduled disk health scans to detect drive failures early to further reduce the chance of multiple drive failure. This can be done from Storage & Snapshots > Disks/VJBOD > click on Disk Health > Settings.
Related documents:
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