QNAP RAID 10 Recovery

For four disk QNAP devices, possible array types are RAID5, RAID10 and RAID6. All these types of arrays are redundant, meaning they can survive disk failure. In the case of RAID5 - failure of 1 disk, in the case of RAAID6 - failure of 2 disks, and in the case of RAID10 - failure of 1 disk with a 100% probability and failure of 2 disks with a probability of 66% (for a 4-disk array). However, disk failure, as a rule, does not lead to the need to restore data, because in a redundant array, as soon as one of the disks fails, the user receives a message that the disk needs to be replaced as soon as possible, then after replacement, everything works as before. There are other reasons why data becomes unavailable:

  • Failure of the QNAP device
  • Storage Driver Failure
  • File system failure
  • RAID metadata corruption
  • Accidental deletion or formatting of a volume

In all these cases, the data can still be recovered using special software for data recovery from QNAP devices.

In all these cases, you can quite easily try to recover the data yourself. To do this, you will need to use a special software for recovering data from QNAP devices – ReclaiMe File Recovery.

How to recover data from QNAP RAID10 using ReclaiMe

  1. Turn off QNAP and remove the drives. Be sure to indicate which disks were in which bay. Despite the fact that the software can restore the order of disks, it is better to do this, because in case of unforeseen problems, you will know which disk was originally in which bay.
  2. Connect all drives to your computer. Although, for RAID10 recovery, it is enough to connect only 2 disks, it is impossible to determine by eye which disks are included in the RAID0 set. Therefore, it is advisable to connect all drives (or at least 3), and the program itself will exclude mirror pairs from the scanning process. It is recommended to connect the drives directly to the computer's motherboard, however, if there are not enough free ports, you can use USB-to-SATA adapters with power.
  3. Download, install and run ReclaiMe File Recovery.
  4. In the list of devices from ReclaiMe, find the volume from QNAP and start scanning by clicking the Start button. If the required volume is not present or the volume from QNAP is displayed as red, then skip a few steps and go to step 7.
    5. ReclaiMe reading QNAP volumes
  5. Wait until you receive a message that the Initial Scan is completed. At this point, the software pauses, and you should check the recovered data. If the files are displayed correctly in the Preview window and the size of the recovered data is as expected, then you can stop scanning and proceed to saving the recovered data. If you are not satisfied with the recovery result, continue scanning by clicking the Resume button.
    6. ReclaiMe software - file preview
  6. Buy an Ultimate license key and copy the data to another storage location. This could be another NAS or external drives.
  7. If you do not see the volume from QNAP, or the volume is red, most likely the RAID10 array configuration is destroyed, and before restoring the files, you need to first restore the array configuration. To do this, download, install, and run the ReclaiMe Free RAID Recovery program.
  8. Select all QNAP drives in the ReclaiMe Free RAID Recovery software window, click Other RAIDs and then select Start RAID10 or 01.
    9. QNAP RAID10 recovery
  9. As soon as the software recovers the configuration, select the Run ReclaiMe to recover files option.
  10. In the ReclaiMe File Recovery software window that appears, select the volume from Reconstructed RAID and start scanning.
  11. Next, follow the recommendations described in steps 5 and 6.

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