Qnap Data Protection Features

I – Protect Your Datas With RAID

II – Qnap Enhanced read-only protection

III – Qnap System Migration Feature;

IV – Qnap Advance Backup Features;

V – How to Draw Data Loose Chance Minimum with Qnap;


RAID buildings are used for performance at the center of campany, or for massive storage to backup your systems/ datas. But RAID systems couldn not use to store data alone because its a true strategic mistake.


I work as an Qnap technician around 2 years, and I Proudly can say that I never let costumers loose any data, even Human Failed cases, and trust me its really really hard to loose your datas when you have a Qnap at your system.

Qnap supports great features to protect your datas;

I – Protect Your Datas With RAID Against Disk Failures

  • RAID 1 (Disk Mirroring): allows one disk failure

    RAID 1 duplicates the data between two hard drives to provide disk mirroring. If you install four hard drives in the Turbo NAS and format each pair of hard drives as “RAID 1”, the capacity of each RAID 1 volume is 1TB (500GB + 500GB). The total storage capacity of the NAS is 2TB.
  • RAID 5 (Disk Striping with parity): allows one disk failure

    The data are striped across all the hard drives in a RAID 5 array. The parity information is distributed and stored across each hard drive. A minimum of three hard drives is required. If you install four hard drives in the Turbo NAS and format the drives as “RAID 5”, the total capacity of the volume is 500GB x (4-1) = 1.5TB.
  • RAID 6 (Disk Striping with 2 parities): allows two disk failure

    The data are striped across all the hard drives in a RAID 6 array. RAID 6 differs from RAID 5 that a second set of parity information is stored across the member drives in the array. The total capacity of RAID 6 disk volume is equal to the size of the smallest disk in the array x (no. of hard disks-2). RAID 6 tolerates failure of two hard drives at the same time. If you install four hard drives in the Turbo NAS and format the drives as “RAID 6”, the total capacity of the volume is 500GB x (4-2) = 1TB.
  • RAID 10 (Disk Mirroring and Striping): allows one disk failure from each RAID 1 pair

    RAID 10 combines four or more disks in a way that protects data against loss of non-adjacent disks. It provides security by mirroring all the data on a secondary set of disks while using striping across each set of disks to speed up data transfers. If you install four hard drives in the Turbo NAS and format the drives as “RAID 10”, the total capacity of the volume is 1TB (500GB+ 500GB).

II – Enhanced Read-only Protection

What If I loose 2 HDD on RAID 5 or Loose 3 HDDs on RAID 6, is that mean I loose data?

Nope, Qnap advance read-only data protectio doesnt let you loose your datas;

Enhanced read-only protection

A degraded RAID volume with bad blocks will normally cause read/write error and the RAID volume might crash when it reaches the number of allowed failed hard disks. The Turbo NAS allows the volume with one or more hard disk failure to enter the read-only protection mode in case the bad block error happens on the second failed disk of RAID 5 or third failed disk of RAID 6, allowing the IT administrator to rescue critical data.


III – Qnap System Migration Feature;

What If my NAS device failed/ get broken, or accidently give bad damage or burned, is that mean that I lose data?

Nope, till your HDDs are allright, you can plug HDDs to another Qnap, and all of your datas with configration comes back. This is called system Migration

System migration allows existing QNAP NAS users to upgrade the NAS to another new QNAP NAS model without the need to transfer the data or reconfigure the system. You only need to install the original hard disk drives on the new NAS following its original hard drive order and restart the NAS.

Due to different hardware design, the NAS will automatically check if a firmware update is required before system migration. After the migration has finished, all the settings and data will be kept and applied to the new NAS. However, the system settings of the source NAS cannot be imported to the destination NAS via “System Administration” > “Backup/Restore Settings”. Configure the NAS again if the settings were lost.

The following table shows the NAS models which support system migration.

Source NAS

Destination NAS


TS-x10, TS-x19, TS-x39, TS-509, TS-809, SS-x39, TS-x59, TS-x69, TS-x12, TS-x79

TS-x10, TS-x19, TS-x39, TS-509, TS-809, SS-x39, TS-x12

Firmware update required.

TS-x10, TS-x19, TS-x39, TS-509, TS-809, SS-x39, TS-x59, TS-x69, TS-x12, TS-x79

TS-x59, TS-x69, TS-x79

Firmware update not required.


The destination should contain enough drive bays to house the number of hard disk drives in the disk volume of the source NAS.
SS-x39 series supports only 2.5-inch hard disk drives.
A NAS with encrypted disk volume cannot be migrated to a NAS which does not support file system encryption. File system encryption is not supported by TS-110, TS-119, TS-210, TS-219, TS-219P, TS-410, TS-419P, TS-410U, TS-419U, TS-119P+, TS-219P+, TS-419P+, TS-112, TS-212, TS-412, TS-419U+, TS-412U.
The Multimedia Station, Download Station, iTunes Server, and UPnP Media Server features will be removed after migrating the non-TS-x79 models to the TS-x79 models. The network shares Multimedia/Qmultimedia, Download/Qdownload and all the downloaded files will be kept.
The registered MyCloudNAS name on the source NAS will not be moved to the destination NAS after system migration. To use the same MyCloudNAS name on the destination NAS, change the MyCloudNAS name on the source NAS before system migration and register the same name on the destination NAS after the process.

Destination NAS

Disk volume supported for system migration

1-bay NAS

1-drive single disk volume

2-bay NAS

1 to 2-drive single disk volume, JBOD, RAID 0,

2-drive RAID 1.

4-bay NAS

1 to 4-drive single disk volume, JBOD, RAID 0,

2-drive RAID 1,

3 to 4-drive RAID 5,

4-drive RAID 6,

4-drive RAID 10.

5-bay NAS

1 to 5-drive single disk volume, JBOD, RAID 0,

2-drive RAID 1,

3 to 5-drive RAID 5,

4 to 5-drive RAID 6,

4-drive RAID 10.

6-bay NAS

1 to 6-drive single disk volume, JBOD, RAID 0,

2-drive RAID 1,

3 to 6-drive RAID 5,

4 to 6-drive RAID 6,

4-drive or 6-drive RAID 10.

8-bay NAS

1 to 8-drive single disk volume, JBOD, RAID 0,

2-drive RAID 1,

3 to 8-drive RAID 5,

4 to 8-drive RAID 6,

4-drive, 6-drive, or 8-drive RAID 10.

Follow the steps below to perform system migration.

Caution: To avoid system damage or serious injuries, the system migration procedure should be performed by an authorized server manager or IT administrator.

1. Turn off the source NAS and unplug the hard drives.
2. Remove the hard drives from the old trays and install them to the hard drive trays of the new NAS.
3. Plug the hard drives to the destination NAS (new model). Make sure the hard drives are installed in the original order.
4. Follow the instructions of the Quick Installation Guide (QIG) to connect the power supply and network cable(s) of the new NAS.
5. Turn on the new NAS. Login the web administration interface as an administrator (default login: admin; password: admin).
6. If you are informed to update the firmware of the new NAS, follow the instructions to download and install the firmware.
7. Click “Start Migrating”. The NAS will restart after system migration. All the data and settings will be retained.

Some system settings will be removed after system migration due to different system design. Configure the following settings again on the new NAS : Windows AD / Some QPKGs need to be resintalled (e.g. XDove)


IV – Qnap Advance Backup Features;

Remote Replication : Backup all of your datas to another Qnap agains Disaster Recovery

External Drive Backup : Backup your datas to external drives

Cloud Backup : Backup your datas with Cloud Computing


V – How to Draw Data Loose Chance Minimum with Qnap;

I Highly Advice you to these thing to draw Loosing data potantial or System Stop

Never Trust Any Storage Solutions : If you have only one NAS / Storage Solution (not only Qnap, any Network Storage Device) dont use at the center ot your system. For Qnap, as I said I never let a costumer loose data, but when system stops because of an error, It may cost a few hours or days to fix that problem.

Use Second Qnap Remote Replication Feature For Backup : Even If you pay 1 million dollar cost Backup device (not only Qnap) , always work with double backup. One of my costumer told me data recovery story about a serious goverment project. They Have 2 location with 2 backup solution (this backup solution is not Qnap), and these 2 devices replicate datas on each other. One day an engineer press “Reset device” button and delete whole data on storage, and because of replication, all datas on other device are deleted too.

Qnap is really great for that kind of needs with its Remote Replication, Realtime Remote Replication, Cloud Backup solutions and External HDD backup Features. Also Qnap replication an option “delete datas on other device” option, and if you dont activate this, loosing data is nearly impossable.

I strongly advice you to Buy 2 Qnap and replicate each other. You’ll realize when recovering a disaster and see its worth every penny on spending money to Qnap Backup solutions and wont regret for spending money on this. I’m not telling this because of working on Qnap technical support side, trust my words. When one of the NAS failed, just go with another one till broken one fixed.

Use External HDD / Cloud Features : Qnap External Device Backup and Clous Backup Features really save ass at extrame cases. Use them!

Network Recycle Bin : Open Network recycle Bin option for possable human mistake accidently deleted files.

Use UPS : At sudden power cuts, sometimes HDDs on Qnap can be damaged. I strongly advice to Use compatable UPS device with Qnap Device.


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