How to recover data from Thecus N7770 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 N7770

Thecus N7770 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from N7770.

How to recover data from NAS Thecus N7770

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.

Can overheating or improper ventilation cause data loss on NAS Thecus N7770 devices?

Yes, overheating or improper ventilation can potentially cause data loss on NAS Thecus N7770 devices. When a NAS device overheats, it can damage the internal components, including hard drives, which may lead to data corruption or loss. Additionally, inadequate ventilation can cause the device to run at higher temperatures, increasing the risk of overheating. It is essential to ensure proper cooling and ventilation for NAS devices to prevent potential data loss.

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

Although NAS N7770 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 N7770. 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.

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How to recover data from a Thecus

How to recover data from a Thecus

N7770 has 7 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 N7770 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 N7770, feel free to leave a comment!
  • Charlton Findley
    Charlton Findley 13.09.2023 02:57 #
    Can data recovery from a NAS Thecus N7770 device be done if the disks have been reformatted?
    • Hetman Software
      Hetman Software 13.09.2023 02:59 #

      It is generally not possible to recover data from a NAS device if the disks have been reformatted. Reformatting erases the file system and data structures on the disks, making it extremely difficult to recover any data.

      However, if you have a backup of the data or if you have enabled any data recovery features or snapshots on the NAS device before reformatting, there might be a possibility to recover some or all of the data. It is recommended to consult with a professional data recovery service for the best chances of recovering your data in such cases.

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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

  • How user-friendly is the web interface of the NAS Thecus N7770?

    The user-friendliness of the web interface of the NAS Thecus N7770 can vary depending on the individual's level of experience and familiarity with network-attached storage systems. However, Thecus generally aims to provide a user-friendly interface that is intuitive and easy to navigate.

    The web interface of the Thecus N7770 offers a graphical user interface (GUI) that allows users to access and manage various features and settings of the NAS. It provides a dashboard-like overview of the system's status, including storage capacity, network connectivity, and system health.

    Users can easily navigate through different sections and menus to configure settings such as user accounts, shared folders, network protocols, RAID configurations, and backup options. The interface also provides access to additional features like media server setup, remote access, and app installations.

    The Thecus web interface often includes helpful tooltips and explanations to guide users through different settings and options. It also provides wizards and step-by-step guides for common tasks, making it easier for beginners to set up and use the NAS.

    Overall, while there may be a slight learning curve for those new to NAS systems, the web interface of the Thecus N7770 is generally considered user-friendly and provides a comprehensive set of features for managing and accessing data on the network-attached storage device.

  • What are the key features and functionalities available in the web interface of the NAS Thecus N7770?

    The web interface of the NAS Thecus N7770 offers a range of key features and functionalities, including:

    1. Dashboard: The web interface provides a dashboard that gives an overview of the NAS system, including system status, resource usage, and network information.
    2. File Management: Users can easily manage files and folders on the NAS through the web interface. They can create, delete, copy, and move files and folders, as well as set access permissions.
    3. RAID Management: The NAS supports various RAID configurations, and the web interface allows users to create, manage, and monitor RAID arrays. It provides options for RAID level selection, disk initialization, and hot-swapping.
    4. User and Group Management: Users can create and manage user accounts and groups through the web interface. They can assign different access permissions to different users and groups, ensuring secure data access.
    5. Network Services: The web interface allows users to configure various network services, such as file sharing protocols (SMB, FTP, NFS), network settings (IP address, DNS, DHCP), and network security (firewall, SSL/TLS).
    6. Backup and Sync: Users can set up backup and synchronization tasks through the web interface. They can schedule regular backups, choose backup destinations, and select specific files or folders to be backed up.
    7. Application Center: The NAS supports a range of applications that can be installed and managed through the web interface. These include media servers, surveillance applications, download managers, and more.
    8. System Monitoring: The web interface provides real-time monitoring of system resources, including CPU usage, memory usage, network traffic, and disk activity. Users can also view system logs and receive notifications for system events.
    9. Remote Access: The NAS supports remote access, allowing users to access their files and manage the NAS remotely through the web interface. This feature enables convenient access from anywhere with an internet connection.
    10. Firmware Updates: The web interface allows users to easily check for and install firmware updates for the NAS. This ensures that the system is always up to date with the latest features and security patches.
  • Can the web interface of the NAS Thecus N7770 be accessed remotely, and if so, what are the security measures in place to protect data?

    Yes, the web interface of the NAS Thecus N7770 can be accessed remotely. To ensure data security, the device offers several security measures:

    1. HTTPS Encryption: The web interface uses HTTPS encryption to secure the communication between the user and the NAS, preventing unauthorized access and data interception.
    2. User Authentication: The NAS requires user authentication before accessing the web interface remotely. Users need to provide a valid username and password to log in.
    3. IP Access Control: Thecus N7770 allows administrators to restrict access to the web interface based on IP addresses. This feature enables administrators to specify which IP addresses or ranges are allowed to connect remotely.
    4. Firewall: The NAS has a built-in firewall that helps protect against unauthorized access attempts and potential attacks.
    5. Two-Factor Authentication (2FA): Thecus N7770 supports 2FA, adding an extra layer of security. Users can enable 2FA to require a second authentication factor, such as a unique code generated by a mobile app, in addition to the username and password.
    6. Security Advisories and Firmware Updates: Thecus regularly releases security advisories and firmware updates to address any identified vulnerabilities and ensure the NAS remains secure.

    It is important to note that while these security measures enhance data protection, it is also crucial for users to follow best practices, such as using strong passwords, regularly updating firmware, and keeping backups of important data.

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