How to recover data from Thecus N8800SAS 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 N8800SAS

Thecus N8800SAS NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from N8800SAS.

How to recover data from NAS Thecus N8800SAS

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.

How frequently should data be backed up to prevent loss on NAS Thecus N8800SAS devices?

To prevent data loss on NAS Thecus N8800SAS devices, it is recommended to back up the data regularly. The frequency of backups depends on the importance and criticality of the data, as well as the frequency of changes or updates to the data.

For critical data that is frequently updated, a daily backup schedule is typically recommended. This ensures that any changes made during the day are backed up and can be easily restored if needed.

For less critical data or data that doesn't change frequently, a weekly or monthly backup schedule may be sufficient. However, it is important to consider the potential impact of data loss and determine an appropriate backup frequency based on your specific needs.

Additionally, it is advisable to follow the 3-2-1 backup strategy, which involves having at least three copies of your data, stored on two different types of media, with one copy stored off-site or in the cloud. This provides an extra layer of protection against data loss.

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

Although NAS N8800SAS 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 N8800SAS. 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

N8800SAS has 8 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 50;
  • RAID 60;
  • 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 N8800SAS 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 N8800SAS, feel free to leave a comment!
  • Bubba Rathbone
    Bubba Rathbone 13.09.2023 03:56 #
    Are there any specific firmware updates or patches recommended for data recovery from NAS Thecus N8800SAS devices?
    • Hetman Software
      Hetman Software 13.09.2023 04:15 #

      I apologize, but I don't have access to specific firmware update information for Thecus N8800SAS devices. It is recommended to visit Thecus' official website or contact their customer support for the most accurate and up-to-date information regarding firmware updates or patches for data recovery purposes.

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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 to remotely access files on the NAS Thecus N8800SAS from a remote location?

    To remotely access files on the Thecus N8800SAS NAS from a remote location, you can follow these steps:

    1. Ensure the NAS is connected to the internet: Connect the NAS to your network router using an Ethernet cable and make sure it has internet access.
    2. Configure port forwarding on your router: Access your router's settings and set up port forwarding to forward the necessary ports (usually 80 for HTTP and 443 for HTTPS) to the local IP address of your NAS. This allows external access to the NAS.
    3. Set up a static IP address for the NAS: Assign a static IP address to your NAS within your local network. This ensures that the NAS always has the same IP address, making it easier to connect remotely.
    4. Enable remote access on the NAS: Access the NAS administration interface through a web browser by entering its IP address. Go to the settings or network configuration section and enable remote access or remote management. Set up a username and password for remote access.
    5. Configure DDNS (Dynamic DNS): If your internet service provider assigns you a dynamic IP address (which changes periodically), you need to set up DDNS. DDNS allows you to access your NAS using a domain name instead of an IP address. Register for a free DDNS service and configure it on your NAS.
    6. Configure SSL/TLS certificate (optional): To enhance security, you can obtain and install an SSL/TLS certificate on your NAS. This ensures that the data transferred between your remote device and the NAS is encrypted.
    7. Set up VPN (optional): For an additional layer of security, you can set up a Virtual Private Network (VPN) on your NAS. This allows you to establish a secure connection to your local network before accessing the NAS remotely.
    8. Access the NAS remotely: Open a web browser on your remote device and enter the DDNS domain name or the static IP address of your NAS. You should be prompted to enter your username and password. Once logged in, you can access and manage your files on the NAS from anywhere.

    Note: The exact steps and options may vary depending on the firmware version and specific configuration of your Thecus N8800SAS NAS. It is recommended to consult the NAS user manual or Thecus support for detailed instructions.

  • What are the security measures in place to ensure safe file access on the NAS Thecus N8800SAS from a remote location?

    The Thecus N8800SAS NAS device provides several security measures to ensure safe file access from a remote location. Some of these measures include:

    1. Secure Socket Layer (SSL) and Transport Layer Security (TLS): The NAS supports SSL and TLS encryption protocols to secure data transmission over the network. This ensures that the data sent between the remote location and the NAS is encrypted and protected from unauthorized access.
    2. Virtual Private Network (VPN) support: The NAS supports VPN connections, allowing users to establish a secure and encrypted tunnel between their remote location and the NAS. This ensures that all file access and data transmission occurs within a secure network environment.
    3. Access Control: The NAS has robust access control mechanisms that allow administrators to define user permissions and access rights. This ensures that only authorized users can access specific files and folders remotely.
    4. Two-Factor Authentication (2FA): The Thecus NAS supports two-factor authentication, which adds an extra layer of security to the login process. Users are required to provide a combination of something they know (password) and something they have (a unique code generated by a mobile app or hardware token) to gain access to the NAS remotely.
    5. Firewall and IP blocking: The NAS has built-in firewall capabilities to protect against unauthorized access attempts. It can also block specific IP addresses or IP ranges that are deemed suspicious or malicious.
    6. Encrypted File System: The Thecus N8800SAS supports encrypted file systems, such as AES 256-bit encryption, to secure the data stored on the NAS. This ensures that even if the physical drives are stolen, the data remains encrypted and inaccessible without the encryption key.
    7. Audit Logs and Alerts: The NAS keeps detailed audit logs of user activities and provides alert notifications for any suspicious or unauthorized access attempts. This allows administrators to monitor and investigate any security incidents.

    It is important to note that while the Thecus N8800SAS provides these security measures, it is also crucial for users to follow best practices, such as using strong passwords, regularly updating firmware, and keeping backups of important data, to ensure the overall security of the NAS.

  • Are there any limitations or restrictions when accessing files on the NAS Thecus N8800SAS from a remote location, such as file size or transfer speed?

    There may be limitations or restrictions when accessing files on the NAS Thecus N8800SAS from a remote location. Some potential limitations could include:

    1. File size: The NAS may have a maximum file size limit for remote access. This limit could be set by the NAS firmware or the file system used on the NAS. For example, if the NAS uses the FAT32 file system, the maximum file size limit would be 4GB.
    2. Transfer speed: The transfer speed of files from a remote location to the NAS depends on various factors such as the internet connection speed, network congestion, and the NAS's own processing power. If the internet connection speed is slow, it may affect the transfer speed.
    3. Bandwidth limitations: Some ISPs (Internet Service Providers) may impose bandwidth limitations or throttle the connection speed for certain types of data transfers, especially for large file transfers. This can impact the transfer speed when accessing files remotely.
    4. Network latency: Accessing files remotely introduces network latency, which is the delay in data transmission over the network. This latency can affect the overall speed and responsiveness when accessing files on the NAS.

    It is recommended to consult the user manual or contact Thecus support for specific limitations or restrictions related to the NAS Thecus N8800SAS when accessing files remotely.

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