How to recover data from Thecus N4810 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 Thecus N4810

Thecus N4810 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from N4810.

How to recover data from NAS Thecus N4810

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 Thecus also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

What are the common causes of data loss in NAS Thecus N4810 devices?

Common causes of data loss in NAS Thecus N4810 devices include:

  1. Hardware failure: This can include issues with the hard drives, power supply, or other components of the NAS device. If any of these components fail, it can result in data loss.
  2. Accidental deletion: Users may accidentally delete files or folders from the NAS device, leading to data loss. This can happen due to human error or a mistake during file management.
  3. File system corruption: If the file system on the NAS device becomes corrupted, it can result in data loss. This can happen due to improper shutdowns, power outages, or other issues that interrupt the normal functioning of the device.
  4. Virus or malware attack: NAS devices can be vulnerable to virus or malware attacks, which can lead to data loss. These attacks can corrupt or delete files stored on the device.
  5. Natural disasters or physical damage: NAS devices can be affected by natural disasters like floods, fires, or earthquakes. Physical damage to the device, such as dropping or mishandling, can also result in data loss.
  6. Firmware or software issues: Problems with the firmware or software of the NAS device can cause data loss. This can include bugs, glitches, or compatibility issues that affect the operation of the device.

It is important to regularly backup data from the NAS device to prevent permanent data loss in case of any of these causes.

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

Although NAS N4810 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 Thecus N4810. 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 Thecus

How to recover data from a Thecus

N4810 has 4 HDD slots, and it supports the following array types:

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

NAS supports:

  • EXT3;
  • EXT4;
  • XFS;

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 Thecus N4810 network-attached storage keeps OS Linux 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 N4810, feel free to leave a comment!
  • Benedict Mileham
    Benedict Mileham 13.09.2023 07:47 #
    How to rebuild RAID on NAS Thecus N4810?
    • Hetman Software
      Hetman Software 13.09.2023 07:59 #

      To rebuild a RAID on Thecus N4810 NAS, follow these steps:

      1. Log in to the Thecus N4810 web interface using your administrator credentials.
      2. Go to the "Storage" tab and select "RAID Management."
      3. In the RAID Management page, you will see a list of your RAID arrays. Identify the RAID array that needs to be rebuilt and click on the "Rebuild" button next to it.
      4. A confirmation dialog will appear. Click "OK" to start the rebuild process.
      5. The NAS will start rebuilding the RAID array. This process may take some time, depending on the size of the array and the amount of data to be rebuilt. You can monitor the progress of the rebuild process in the RAID Management page.
      6. Once the rebuild process is complete, the RAID array will be fully operational again.

      Note: It is important to ensure that the NAS has sufficient power and cooling during the rebuild process to avoid any data loss or hardware issues.

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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 streaming audio files to a Thecus N4810 NAS device?

    To stream audio files to a Thecus N4810 NAS device, you can follow these steps:

    1. Connect the Thecus N4810 NAS device to your network: Ensure that the NAS device is connected to your local area network (LAN) using an Ethernet cable.
    2. Set up the NAS device: Access the NAS device's web-based administration interface by entering its IP address in a web browser. Follow the on-screen instructions to set up the device, create user accounts, and configure network settings.
    3. Create a shared folder for audio files: In the NAS administration interface, create a shared folder where you will store your audio files. This folder will be accessible for streaming.
    4. Upload audio files to the shared folder: Copy or upload your audio files to the shared folder on the NAS device. You can use the web-based file manager or a file transfer protocol (FTP) client to transfer the files.
    5. Install a media server application: The Thecus N4810 NAS device supports various media server applications like Plex, Twonky, or DLNA. Install the desired media server application from the Thecus App Center or follow the manufacturer's instructions.
    6. Configure the media server: Access the media server application's settings or preferences and configure it to use the shared folder where your audio files are stored. Set up any additional options or settings as required.
    7. Scan the shared folder for audio files: After configuring the media server, initiate a scan or library update to index the audio files in the shared folder. This process might take some time, depending on the number of files.
    8. Set up client devices for streaming: On the device you want to stream audio from, such as a smartphone, tablet, or computer, install a media player application that supports the media server protocol (e.g., Plex, DLNA, or UPnP). Connect the media player application to the Thecus N4810 NAS device by entering its IP address or searching for available servers.
    9. Access and stream audio files: Open the media player application on your client device and navigate to the audio section. You should see the indexed audio files from the Thecus N4810 NAS device. Select the desired audio file to start streaming and enjoy your music.

    Note: The specific steps may vary depending on the media server application you choose and the client device you use for streaming.

  • What are the recommended audio file formats and codecs for streaming to the Thecus N4810 NAS?

    The Thecus N4810 NAS supports a variety of audio file formats and codecs for streaming. Here are some recommended formats and codecs:

    1. Audio File Formats:
    • MP3: This is a widely supported audio format and is compatible with most media players and devices.
    • AAC: Advanced Audio Coding is a popular format known for its high-quality compression and compatibility.
    • FLAC: Free Lossless Audio Codec provides lossless compression, preserving the original audio quality.
    • OGG: Ogg Vorbis is an open-source audio format known for its high-quality compression and support for metadata.
    1. Audio Codecs:
    • MP3: MPEG-1 Audio Layer 3 is a widely used audio codec known for its good compression and compatibility.
    • AAC: Advanced Audio Coding is a popular codec known for its efficient compression and high audio quality.
    • FLAC: FLAC codec is known for its lossless compression, providing high-quality audio without any loss in data.
    • OGG Vorbis: Ogg Vorbis codec offers high-quality audio compression and is often used for streaming purposes.

    It's worth noting that the Thecus N4810 NAS supports a wide range of audio formats and codecs, so you may have flexibility in choosing the format and codec that best suits your needs and preferences.

  • Are there any specific software or applications required to set up and manage audio streaming on the Thecus N4810 NAS?

    Yes, there are several software and applications that can be used to set up and manage audio streaming on Thecus N4810 NAS. Some of the commonly used software and applications include:

    1. Plex Media Server: Plex is a popular media server software that allows you to organize and stream your media files, including audio, to various devices.
    2. iTunes Server: The Thecus N4810 NAS supports iTunes server, which allows you to stream your music library to iTunes clients on different devices.
    3. DLNA Media Server: The NAS also supports DLNA media server, which enables you to stream audio and other media files to DLNA-compliant devices such as smart TVs, game consoles, and audio receivers.
    4. Audio Station: Audio Station is a multimedia application provided by Thecus that allows you to stream audio files stored on the NAS to various devices using a web browser or mobile app.
    5. Subsonic: Subsonic is a popular media streaming server that supports audio streaming. It can be installed on the Thecus N4810 NAS to stream music to web browsers and mobile apps.

    These are just a few examples, and there are other software and applications available that can be used depending on your specific requirements and preferences.

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