How to recover data from QNAP TVS-873e 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-873e

QNAP TVS-873e 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-873e.

How to recover data from NAS QNAP TVS-873e

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 improper network configuration or firewall settings result in data loss on NAS QNAP TVS-873e devices?

Yes, improper network configuration or firewall settings can potentially result in data loss on NAS QNAP TVS-873e devices. If the network configuration is not properly set up, it may lead to connectivity issues, data corruption, or even loss of data access. Similarly, incorrect firewall settings can block necessary network traffic, preventing the NAS device from functioning properly and potentially causing data loss. It is crucial to ensure that network configurations and firewall settings are correctly configured to protect the data integrity and accessibility of the NAS device.

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

Although NAS TVS-873e 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-873e. 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-873e has 8 HDD slots, and it supports the following array types:

  • RAID 50;
  • RAID 60;
  • 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-873e 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-873e, feel free to leave a comment!
  • Armistead Coates
    Armistead Coates 16.09.2023 18:45 #
    Are there any specific encryption methods used in NAS QNAP TVS-873e devices that may affect data recovery?
    • Hetman Software
      Hetman Software 16.09.2023 20:00 #

      Yes, the QNAP TVS-873e NAS devices support various encryption methods that can potentially affect data recovery. These devices offer hardware-accelerated AES-NI encryption, which allows users to encrypt their data to ensure confidentiality and security.

      If the encryption feature is enabled on the NAS device, it encrypts the data stored on the hard drives. This encryption process converts the data into an unreadable format, making it difficult to recover the data without the encryption key.

      Therefore, if you forget or lose the encryption key or password, it may become extremely challenging or even impossible to recover the encrypted data. It is crucial to keep the encryption key and password in a secure place to avoid any data loss or recovery difficulties.

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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

  • What are the steps involved in connecting the NAS QNAP TVS-873e to a router?

    To connect the NAS QNAP TVS-873e to a router, follow these steps:

    1. Power on the NAS by connecting it to a power source.
    2. Connect one end of an Ethernet cable to the NAS's LAN port (located at the back of the device).
    3. Connect the other end of the Ethernet cable to an available LAN port on your router.
    4. Power on your router and wait for it to initialize.
    5. On your computer or mobile device, open a web browser and enter the IP address of the NAS (default is into the address bar.
    6. Press Enter to access the QNAP NAS web interface.
    7. Follow the on-screen instructions to set up the NAS, including creating an administrator account and configuring network settings.
    8. Once the setup is complete, you should be able to access the NAS from any device connected to the same network by entering the NAS's IP address into a web browser or using QNAP's Qfinder Pro software.

    Note: It is recommended to consult the user manual or documentation specific to your QNAP TVS-873e model for detailed instructions on the initial setup process.

  • What are the recommended network settings for connecting the NAS QNAP TVS-873e to a router?

    To connect the QNAP TVS-873e NAS to a router, you should follow these recommended network settings:

    1. Connect the NAS to the router using an Ethernet cable.
    2. Make sure both the NAS and the router are powered on and functioning properly.
    3. Access the NAS administration interface by entering the NAS IP address in a web browser.
    4. Log in to the NAS administration interface using your credentials.
    5. Go to the "Network & Virtual Switch" section in the administration interface.
    6. Select the "TCP/IP" tab.
    7. Set the "IP Configuration" to "Static IP".
    8. Enter the desired IP address, subnet mask, default gateway, and DNS server information. Make sure to use valid settings that are compatible with your network configuration.
    9. Click on "Apply" or "Save" to save the network settings.

    It is important to note that the specific network settings may vary depending on your network setup and requirements. It is recommended to consult the QNAP TVS-873e NAS user manual or contact QNAP support for detailed instructions and assistance with your specific network configuration.

  • Are there any specific router requirements or compatibility issues to consider when connecting the NAS QNAP TVS-873e?

    When connecting the QNAP TVS-873e NAS to your network, there are a few router requirements and compatibility issues to consider:

    1. Network Interface: The QNAP TVS-873e NAS has four Gigabit Ethernet ports. Ensure that your router has available Gigabit Ethernet ports to connect the NAS.
    2. Network Protocol: The QNAP TVS-873e supports various network protocols such as TCP/IP, DHCP, and SMB/CIFS. Check if your router supports these protocols to ensure seamless connectivity.
    3. Network Speed: The QNAP TVS-873e supports link aggregation, allowing you to combine multiple Ethernet ports for increased network speed. If your router supports link aggregation (also known as port trunking or bonding), you can take advantage of this feature to enhance network performance.
    4. Port Forwarding: If you plan to access your NAS remotely over the internet, you may need to configure port forwarding on your router. Check the QNAP documentation for the specific ports that need to be forwarded.
    5. UPnP and DLNA: If you want to stream media from your NAS to DLNA-compliant devices (such as smart TVs or gaming consoles), ensure that your router supports UPnP (Universal Plug and Play) and DLNA (Digital Living Network Alliance) protocols.
    6. Network Security: To protect your NAS and data, it's important to have a router with robust security features such as firewall, VPN support, and the ability to set up secure connections (HTTPS, SSL/TLS).
    7. Internet Speed: Consider your internet connection speed when accessing the NAS remotely. A fast and stable internet connection is recommended for smooth remote access and data transfers.

    It's always a good idea to consult the QNAP TVS-873e user manual or contact QNAP support for any specific router requirements or compatibility issues related to your setup.

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