How to recover data from QNAP Turbo Station TS-412 / TS-412U NAS

Contents

• Why can’t ordinary software tools restore files from RAID?
• How to take hard disks out of the NAS and connect them to a PC?
  • Restoring data with Hetman RAID Recovery
  • Safe recovery from disk images
  • Where are user’s files stored?
  • Comparison of software for RAID recovery

Why can’t ordinary software tools restore files from RAID?

Conventional hard disks keep user’s data by writing it to their surface in a consecutive way, and this is how an entire file is stored on a single hard disk. However, when data is written to a RAID system, a file is divided into several parts. Then these parts are written consecutively to all hard disks within such array. The size of such parts may range from 2 KB to 2 MB, so each file is stored on several hard disks at the same time.

Such approach helps to speed up read and write operations, and it is evident that saving two parts of a file having the size of 1 GB to two hard disks simultaneously is much faster than saving the same 1 GB of data to one hard disk. However, this peculiarity makes file recovery more complicated.

Various RAID levels store information in different ways. Additionally, manufacturers like QNAP also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

How can the use of specific file-sharing protocols impact data loss risks on NAS QNAP Turbo Station TS-412 / TS-412U devices?

The use of specific file-sharing protocols can impact data loss risks on NAS QNAP Turbo Station TS-412/TS-412U devices in several ways:

1. Encryption: Some file-sharing protocols, such as Secure FTP (SFTP) or HTTPS, provide encryption for data transmission. Encryption ensures that data is securely transferred over the network, reducing the risk of unauthorized access or interception.
2. Authentication: File-sharing protocols like SFTP or FTPS require user authentication before accessing files. Strong authentication mechanisms, such as two-factor authentication or secure certificates, can mitigate the risk of unauthorized access to the NAS device and its data.
3. Access Control: Certain file-sharing protocols allow for granular access control, enabling administrators to define user permissions and restrict access to specific files or folders. By implementing proper access control, the risk of accidental or intentional data loss can be reduced.
4. Vulnerabilities: Different file-sharing protocols may have varying levels of security vulnerabilities. It is crucial to choose protocols that are regularly updated, have robust security measures, and are supported by the NAS device manufacturer. Regularly updating the firmware and protocols on the NAS device can help mitigate potential vulnerabilities and reduce the risk of data loss.
5. Data Integrity: Some file-sharing protocols, such as BitTorrent Sync or Resilio Sync, provide data integrity checks during file transfers. These protocols verify the integrity of transferred data, ensuring that files are not corrupted or tampered with during transmission.
6. Backup and Recovery: The choice of file-sharing protocols can also impact the ability to perform backups and data recovery. Some protocols may provide built-in backup features or integration with backup software, simplifying the process of creating regular backups and minimizing data loss risks.

It is important to assess the specific requirements and security needs of your organization when selecting file-sharing protocols for NAS devices. Implementing a combination of secure protocols, strong authentication mechanisms, access control, and regular backups can significantly reduce data loss risks on NAS QNAP Turbo Station TS-412/TS-412U devices.

How to take hard disks out of the NAS and connect them to a PC?

Although NAS Turbo Station TS-412 / TS-412U can be accessed over the network, you still need to take the hard disks out of the storage device and connect them to a Windows computer. Only in this case will the software be able to scan them properly. Here is what you should do:

1. Turn off the storage and disconnect it from the power supply.

   WARNING! Before you start taking hard disks out of your NAS device, read the manual carefully. Incorrect actions may damage your network-attached storage and/or the hard disks within the RAID system.

2. Take the hard disks out of the NAS one by one, carefully removing them from their slots. Remember that the disks are extremely vulnerable: hitting or dropping them may result in serious physical damage.

3. Make sure to mark each hard disk in accordance with how they were installed inside the NAS.

4. Remove the hard disks and connect them to the computer. In this video, we have explored what ports are used to connect hard disks, and what to do if there are not enough ports or connectors.

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   How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

This program recovers data from damaged RAID arrays and is fully compatible with QNAP Turbo Station TS-412 / TS-412U. The hard disks that make up the RAID contain technical information about the algorithm used to save files. When launched, Hetman RAID Recovery reads this information and puts the damaged array together. Then you can open the disk and save your files. Also, you can recover the files accidentally deleted from the network drive.

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How to recover data from a QNAP

Turbo Station TS-412 / TS-412U has 4 HDD slots, and it supports the following array types:

• RAID 5;
• RAID 6;
• RAID 10;
• RAID 0;
• RAID 1;
• JBOD;

NAS supports:

• ZFS;
• EXT4;
• EXT3;
• FAT32 (External Disk Only);
• NTFS (External Disk Only);
• HFS+ (External Disk Read Only);

Safe recovery from disk images

This utility lets you save an entire copy of the disk to file and then work with this image instead of the actual disk. Such feature helps to protect data on the disk from:

• Overwriting during the recovery process;
• Loss resulting from bad sectors;
• User mistakes.

To create an image, do the following:

1. Make sure that you have enough free space to save the image. The image file size usually equals the disk size.

2. Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.

3. When the image creation wizard starts, you can choose to save the entire disk or select only a part of it. Specify the parameters and click Next.

   

4. At this stage, you need to choose a directory where to save the image. Choose any disk connected to this PC, or save the image by FTP.

   

Where are user’s files stored?

The QNAP Turbo Station TS-412 / TS-412U network-attached storage keeps QTS (QuTS hero) operating system files on a separate RAID 1 (mirrored) array. Usually, all NAS systems create several volumes on every hard disk, and the first of them takes up to 2 Gb of space. This is where operating system files are stored. Other volumes are united into a RAID array where user’s data is written.

Comparison of software for RAID recovery