How to recover data from QNAP TVS-472XT NAS

Is your network drive gone, and you are wondering what to do? Has a RAID system crashed, and your files are no longer accessible? Does your device display an error while booting? Have you accidentally rebuilt your RAID system? Are several hard disks out of order?

How to recover data from NAS QNAP TVS-472XT

QNAP TVS-472XT NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from TVS-472XT.

How to recover data from NAS QNAP TVS-472XT

Recover data from damaged RAID arrays inaccessible from a computer.

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.

Can insufficient power supply or voltage fluctuations cause data loss on NAS QNAP TVS-472XT devices?

Insufficient power supply or voltage fluctuations can potentially cause data loss on any electronic device, including NAS devices like the QNAP TVS-472XT.

Power supply issues can lead to sudden shutdowns or improper functioning of the device, which can result in data corruption or loss. Voltage fluctuations, such as power surges or drops, can damage the internal components of the NAS device, including the hard drives where the data is stored.

To protect your NAS device and prevent data loss, it is recommended to use a high-quality uninterruptible power supply (UPS) that can regulate the voltage and provide backup power during power outages. Additionally, surge protectors can help safeguard against voltage spikes.

It is also crucial to regularly backup your data to an external storage device or cloud storage service to minimize the risk of permanent data loss in case of any unforeseen power-related incidents or hardware failures.

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

Although NAS TVS-472XT 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.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

Hetman Raid Recovery

This program recovers data from damaged RAID arrays and is fully compatible with QNAP TVS-472XT. 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.

Go to view
How to recover data from a QNAP

How to recover data from a QNAP

TVS-472XT has 4 HDD slots, and it supports the following array types:

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

NAS supports:

  • ZFS;
  • EXT4;
  • EXT3;
  • exFAT;
  • 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 ToolsSave 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.

    Hetman Raid Recovery: Image Creation Wizard
  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.

    Hetman Raid Recovery: hoose any disk connected to this PC, or save the image by FTP

Where are user’s files stored?

The QNAP TVS-472XT 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

Product Operating system License type RAID controller support Supported file systems Virtual RAID controller support Data recovery from damaged RAID File preview
Hetman RAID Recovery Windows Paid Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
DiskInternals RAID Recovery Windows Paid Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
R-Studio Windows, Mac, Linux Paid Yes, over 200 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
UFS Explorer RAID Recovery Windows, Mac, Linux Paid Yes, over 1,000 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
EaseUS Data Recovery Windows Paid Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
ReclaiMe Free RAID Recovery Windows Free Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes


We will be happy to answer your questions!

Comments (3)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 9.08.2022 12:31 #
    If you want to ask a question about data recovery, from NAS TVS-472XT, feel free to leave a comment!
  • Sean Thew
    Sean Thew 17.09.2023 23:40 #
    Is it possible to recover data from a NAS QNAP TVS-472XT device that has been affected by a network attack or intrusion?
    • Hetman Software
      Hetman Software 18.09.2023 00:00 #

      Yes, it is possible to recover data from a NAS QNAP TVS-472XT device that has been affected by a network attack or intrusion. However, the success of data recovery depends on various factors such as the extent of the attack, the type of attack, and the measures taken to protect the device.

      Here are some steps you can take to recover data from a compromised QNAP NAS device:

      1. Disconnect the device from the network: Immediately disconnect the affected NAS device from the network to prevent further damage or data loss.
      2. Isolate the device: Physically isolate the device from other network devices to prevent the spread of malware or further attacks.
      3. Assess the damage: Determine the extent of the attack and identify the type of malware or intrusion. This will help in formulating an appropriate recovery plan.
      4. Contact QNAP support: Reach out to QNAP support for assistance. They may provide guidance on recovery options or recommend professional data recovery services.
      5. Restore from backups: If you have regular backups of your data stored on the NAS, restore the data from the backup source. Ensure that the backups are clean and not compromised.
      6. Scan for malware and vulnerabilities: Once the data is recovered, thoroughly scan the NAS device for malware and vulnerabilities. Update the firmware and security patches to prevent future attacks.
      7. Engage professional data recovery services: If the data recovery process is complex or if you are unable to recover the data on your own, consider engaging professional data recovery services. They have specialized tools and expertise to recover data from compromised devices.

      It is important to note that prevention is always better than recovery. Implementing strong security measures, such as using complex passwords, enabling two-factor authentication, keeping the firmware up to date, and regularly backing up data, can help prevent network attacks or intrusions on NAS devices.

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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.


Questions and answers

  • Which operating systems are compatible with the NAS QNAP TVS-472XT?

    The QNAP TVS-472XT is compatible with several operating systems, including:

    1. QTS (QNAP Turbo NAS System): This is the default operating system provided by QNAP for their NAS devices.
    2. Windows: The TVS-472XT supports Windows operating systems, including Windows 7, Windows 8, Windows 10, and Windows Server editions.
    3. macOS: It is compatible with macOS versions, allowing users to access and manage the NAS through their Mac computers.
    4. Linux: The TVS-472XT supports various Linux distributions, such as Ubuntu, Fedora, CentOS, and more.
    5. UNIX: It is compatible with UNIX-based operating systems, ensuring compatibility with a wide range of server environments.
    6. Virtualization: The NAS can be used with virtualization platforms like VMware ESXi, Microsoft Hyper-V, and Citrix XenServer.
    7. Mobile Devices: QNAP provides mobile apps for iOS and Android devices, allowing users to access and manage the NAS from their smartphones and tablets.

    It's important to note that compatibility may vary depending on the specific features and functionalities being used. It is recommended to refer to the QNAP website or user manual for the most up-to-date information on compatibility.

  • Can the QNAP TVS-472XT be used with Windows operating systems?

    Yes, the QNAP TVS-472XT can be used with Windows operating systems. It is compatible with Windows 7, Windows 8, and Windows 10.

  • Are there any specific operating system requirements for the QNAP TVS-472XT?

    Yes, the QNAP TVS-472XT has specific operating system requirements. It supports the following operating systems:

    • QTS (QNAP Turbo NAS System): QTS 4.3.5 or later
    • QuTS hero (ZFS-based NAS operating system): QuTS hero 4.5.2 or later

    It is important to ensure that your operating system is compatible with the QNAP TVS-472XT before purchasing or installing the system.

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