Features to Look for in Home NAS QNAP TVS-872XT Data Recovery

Has your NAS QNAP TVS-872XT suddenly lost its network drive and you’re unsure what to do next? Did the RAID array collapse, making your files inaccessible? Is the device throwing errors during startup? Perhaps you accidentally rebuilt the RAID array or several hard drives failed at the same time?

Features to Look for in Home NAS QNAP TVS-872XT Data Recovery
Data Recovery Tool

QNAP TVS-872XT NAS Data Recovery in 2025

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from an TVS-872XT. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

Features to Look for in Home NAS QNAP TVS-872XT Data Recovery

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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Why Regular Data Recovery Tools Can’t Restore Files from RAID

Conventional hard drives store user data by writing it sequentially across the disk surface, which means an entire file is typically located on a single drive. In contrast, when data is written to a RAID array, each file is split into multiple fragments. These fragments are then distributed and written in sequence across all the drives in the array. Depending on the configuration, fragment sizes can range from 2 KB to 2 MB, so every file is physically stored across several disks at once.

This approach significantly increases read and write performance — after all, writing two halves of a 1 GB file to two drives simultaneously is much faster than writing the full 1 GB to a single disk. However, this same mechanism makes file recovery far more complex.

Different RAID levels use different methods to distribute and protect data. On top of that, manufacturers like QNAP often add their own proprietary structures and variations. As a result, data can be written to disks in many different formats, and each requires a specific approach during recovery.

What is a NAS QNAP TVS-872XT (Network Attached Storage) device?

The QNAP TVS-872XT is a Network Attached Storage (NAS) device. NAS is a file-level storage system that allows multiple users and devices to access and share data over a network. The TVS-872XT is produced by QNAP Systems Inc., a Taiwanese company specializing in network-attached storage and surveillance solutions.

The TVS-872XT is a high-performance NAS device designed for professional and creative users. It features an Intel Core i5 quad-core processor, up to 64GB DDR4 RAM, and eight drive bays for installing hard drives or SSDs. It supports various RAID configurations for data redundancy and protection.

The device offers a wide range of connectivity options, including multiple Gigabit Ethernet ports, USB 3.1 Gen2 ports, and Thunderbolt 3 ports. Thunderbolt 3 allows for high-speed data transfer and daisy-chaining of devices. It also supports 10GbE connectivity for faster network speeds.

The TVS-872XT runs on QNAP's QTS operating system, which provides a user-friendly interface for managing and accessing files, as well as a variety of applications and services. It supports features such as file sharing, remote access, data backup, virtualization, and multimedia streaming.

Overall, the QNAP TVS-872XT is a powerful and versatile NAS device that offers high-performance storage and advanced features for professional users who require reliable and efficient file sharing and data management.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS TVS-872XT can be accessed over the network, you still need to remove its hard disks and connect them directly to a Windows PC. Only then can the recovery software properly scan and analyze the drives. Follow these steps:

  1. Power off the NAS and disconnect it from the power source.

    WARNING! Before removing any drives, carefully read the device manual. Improper actions may damage both the NAS enclosure and the hard disks in the RAID array.

  2. Remove the hard disks one by one, gently sliding each drive out of its slot. Remember that hard disks are highly sensitive: any impact or drop can cause serious physical damage.

  3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

  4. Connect the drives to your computer. In this video, we explain which ports you can use to connect hard disks and what to do if your PC does not have enough free connectors.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

Hetman Raid Recovery

This program restores data from damaged RAID arrays and is fully compatible with QNAP TVS-872XT. Each hard disk in the array contains technical metadata describing how files were written. When launched, Hetman RAID Recovery analyzes this metadata, automatically reconstructs the damaged array, and provides access to its contents. After that, you can browse the recovered disk and save your files. The program can also restore files that were accidentally deleted from the network drive.

Go to view
How to recover data from a QNAP

How to recover data from a QNAP

TVS-872XT 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);

How to Safely Recover Data from Disk Images

This utility allows you to create a complete copy of a disk and work with the disk image instead of the physical drive. This approach helps protect your data from:

  • Overwriting during the recovery process;
  • Additional data loss caused by bad sectors;
  • User errors.

To create a disk image, follow these steps:

  1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

  2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

  3. When the Image Creation Wizard opens, select whether you want to save the entire disk or only a specific region. Adjust the settings and click Next.

    Hetman RAID Recovery: Image Creation Wizard

  4. Choose the directory where the image will be saved. You may select any available disk connected to your PC or upload the image via FTP.

    Hetman RAID Recovery: Choose a disk or save the image via FTP

Where Are the User’s Files Actually Stored?

The QNAP TVS-872XT 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.

RAID Recovery Software: Detailed Comparison

Product Operating system RAID controller support Supported file systems Virtual RAID controller support Data recovery from damaged RAID File preview
Hetman RAID Recovery Windows, Linux, MacOS Yes, over 100 controllers FAT, exFAT, NTFS, ReFS, APFS, HFS+, Ext4, Ext3, Ext2, ReiserFS, Btrfs, VMFS, Hikvision, XFS, UFS, ZFS Yes Yes Yes
DiskInternals RAID Recovery Windows Yes, over 10 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
R-Studio Windows, Mac, Linux Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
UFS Explorer RAID Recovery Windows, Mac, Linux Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
EaseUS Data Recovery Windows Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
ReclaiMe Free RAID Recovery Windows Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes

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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-872XT, feel free to leave a comment!
    Reply
  • Ace Stroud
    Ace Stroud 17.09.2023 00:46 #
    Can data recovery from a NAS QNAP TVS-872XT device be done if the device is showing signs of overheating or cooling fan failure?
    Reply
    • Hetman Software
      Hetman Software 17.09.2023 00:59 #

      If a NAS QNAP TVS-872XT device is showing signs of overheating or cooling fan failure, it is recommended to address the cooling issue first before attempting any data recovery. Overheating can cause further damage to the device and potentially result in permanent data loss.

      Here are some steps you can take:

      1. Shut down the device: Turn off the NAS and unplug it from the power source to prevent any further damage.
      2. Check the cooling fans: Open the device and inspect the cooling fans. Clean them if they are clogged with dust or debris. Ensure that the fans are spinning properly. If a fan is not working, it may need to be replaced.
      3. Improve ventilation: Ensure that the NAS is placed in a well-ventilated area. Make sure there is enough space around the device for proper airflow. Consider using additional cooling solutions such as external fans or cooling pads.
      4. Monitor temperature: Install software provided by QNAP to monitor the temperature of the device. This will help you keep track of any overheating issues and take necessary actions.

      Once you have addressed the cooling issue and the device is running within safe temperature ranges, you can attempt data recovery. However, if the device has experienced severe overheating or fan failure, it is recommended to seek professional assistance from a data recovery service provider. They will have the expertise and specialized tools to recover data from the NAS device in such situations.

      Reply
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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 xaker.ru, 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.

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Questions and answers

  • What are the different file access levels available on the QNAP TVS-872XT NAS?

    The QNAP TVS-872XT NAS supports the following file access levels:

    1. Public Access: This level allows anyone on the network to access and read/write files on the NAS without any authentication.
    2. User Access: Users with valid credentials can access their own files and folders on the NAS. The administrator can assign different permissions (read, write, execute, etc.) to individual users.
    3. Group Access: Users can be grouped together, and the administrator can assign permissions to the entire group. This simplifies the process of granting access to multiple users simultaneously.
    4. Guest Access: This level allows guests to access specific files or folders on the NAS without the need for authentication. The administrator can set limitations on guest access.
    5. Domain Access: The NAS can be integrated into an existing Windows Active Directory or LDAP server. This allows users to log in using their domain credentials and access files accordingly.
    6. FTP Access: The NAS supports FTP (File Transfer Protocol) access, allowing users to upload and download files using FTP clients.
    7. Web Access: The NAS provides a web-based file management interface, allowing users to access and manage files through a web browser.
    8. Mobile Access: QNAP provides mobile apps (Qfile, Qmanager, Qphoto, etc.) that allow users to access and manage files on the NAS using their smartphones or tablets.

    These access levels can be configured and customized by the administrator to meet the specific needs of the users and organization.

  • How can I configure file access levels on the QNAP TVS-872XT NAS for different users or groups?

    To configure file access levels on the QNAP TVS-872XT NAS for different users or groups, follow these steps:

    1. Log in to the QNAP NAS web interface using your admin credentials.
    2. Go to "Control Panel" and click on "Shared Folders."
    3. Create a new shared folder or select an existing one that you want to configure access levels for.
    4. Click on "Edit" next to the shared folder you selected.
    5. In the "Permissions" tab, you will see a list of existing users and groups with their respective access permissions.
    6. To add a new user or group, click on the "+" icon.
    7. In the "Add User/Group" window, select either "User" or "Group" from the dropdown menu.
    8. Enter the name of the user or group you want to add and click "OK."
    9. Once the user or group is added, you can set their access permissions by checking the boxes for Read, Write, or Deny.
    10. You can also set advanced permissions by clicking on the "Advanced Permissions" button. This allows you to configure more granular access control settings.
    11. After setting the desired access levels, click "Apply" to save the changes.
    12. Repeat the above steps for each user or group you want to configure access levels for.
    13. Once the access levels are configured, users or groups will have the specified permissions when accessing the shared folder.

    Remember to regularly review and update access levels to ensure the security and integrity of your files.

  • Can you explain the permissions and restrictions associated with each file access level on the QNAP TVS-872XT NAS?

    The QNAP TVS-872XT NAS provides several file access levels with different permissions and restrictions. Here is a breakdown of each access level:

    1. Admin: The admin access level has full control over all aspects of the NAS. This includes the ability to create, modify, and delete files and folders, manage users and groups, adjust system settings, and install or uninstall applications.
    2. Read/Write: Users with the read/write access level can view, create, modify, and delete files and folders. They can also upload and download files, but they do not have administrative privileges to manage system settings or install applications.
    3. Read Only: Users with the read-only access level can only view and download files and folders. They cannot create, modify, or delete any content on the NAS.
    4. Deny Access: This access level restricts users from accessing any files or folders on the NAS. They will not be able to view or download any content.
    5. Custom: The custom access level allows administrators to define specific permissions for individual users or groups. This level provides granular control over file and folder access, allowing administrators to set different permissions for different users or groups.

    It's important to note that access levels can be assigned to individual users or groups, ensuring that multiple users can have different levels of access to the same files and folders. This allows for effective collaboration and data security on the QNAP TVS-872XT NAS.
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