How to recover data from Thecus N7770-10G 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 N7770-10G

Thecus N7770-10G NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from N7770-10G.

How to recover data from NAS Thecus N7770-10G

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 improper network configuration or firewall settings result in data loss on NAS Thecus N7770-10G devices?

Improper network configuration or firewall settings can potentially lead to data loss on NAS devices, including Thecus N7770-10G. Here are a few scenarios where this could occur:

  1. Inadequate network configuration: If the NAS device is not properly connected to the network or if there are network issues such as intermittent connectivity or high latency, it may result in data loss. Unstable connections can cause file transfer errors or interruptions during backup processes, leading to incomplete or corrupted data.
  2. Firewall blocking necessary services: If the firewall settings on the NAS or the network infrastructure block essential services required for data access or backup, it can prevent users from accessing or backing up their data. This can lead to data loss if users are unable to retrieve their files or if backups fail to complete.
  3. Misconfigured access controls: Incorrectly configured access controls on the NAS device can result in unauthorized access or accidental deletion/modification of data. If users are granted excessive privileges or if the permissions are not properly set, it can lead to data loss due to accidental deletions or unauthorized modifications.
  4. Firmware or software vulnerabilities: If the NAS device's firmware or software is outdated or contains security vulnerabilities, it can be exploited by malicious actors to gain unauthorized access or perform destructive actions. This can result in data loss if the attackers delete or encrypt the data, rendering it inaccessible.

To mitigate the risk of data loss due to network configuration or firewall issues, it is essential to follow best practices such as:

  • Properly configure the network settings and ensure stable connectivity.
  • Allow necessary network services and ports through the firewall.
  • Regularly update the NAS firmware and software to address security vulnerabilities.
  • Implement secure access controls and regularly review and update user permissions.
  • Maintain regular backups of critical data to an off-site location or separate storage device.

It is recommended to consult the official documentation or seek assistance from Thecus support for specific configuration details and troubleshooting steps for the N7770-10G model.

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

Although NAS N7770-10G 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 N7770-10G. 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

N7770-10G 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 N7770-10G 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 N7770-10G, feel free to leave a comment!
  • Francis Reed
    Francis Reed 13.09.2023 10:55 #
    Can data recovery from a NAS Thecus N7770-10G device be performed if there are issues with the network connectivity?
    • Hetman Software
      Hetman Software 13.09.2023 11:01 #

      Yes, data recovery from a NAS Thecus N7770-10G device can still be performed even if there are issues with the network connectivity.

      The NAS device typically has multiple ways to access the data stored on it, including network access and direct access through USB or eSATA ports. If there are network connectivity issues, you can try the following alternatives:

      1. Direct connection: Connect a computer directly to the NAS device using a USB or eSATA cable. This allows you to access the data directly without relying on network connectivity.
      2. Remove the hard drives: If the NAS device supports hot-swappable hard drives, you can remove the drives and connect them to another computer or a compatible external enclosure. This allows you to access the data directly from the drives.
      3. Use data recovery software: If the above options are not possible or feasible, you can use data recovery software that supports NAS devices. These software tools can scan the NAS drives and recover data even if there are network connectivity issues.

      It's important to note that if you are not familiar with data recovery processes, it's recommended to seek professional help from a data recovery service. They have the expertise and specialized tools to handle complex data recovery scenarios and minimize the risk of further data loss.

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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 key features and measures implemented by the Thecus N7770-10G NAS device to ensure data security?

    The Thecus N7770-10G NAS device implements several key features and measures to ensure data security. These include:

    1. RAID Support: The NAS device supports various RAID levels (RAID 0, 1, 5, 6, 10, 50, 60) to provide data redundancy and protection against drive failures.
    2. AES 256-bit Encryption: Thecus N7770-10G supports AES 256-bit encryption for data stored on the device. This ensures that even if the drives are stolen or accessed by unauthorized individuals, the data remains encrypted and secure.
    3. Data Backup and Disaster Recovery: The NAS device offers multiple backup options, including scheduled backups, real-time remote replication, and cloud backup services. These features help in creating multiple copies of data and ensuring its availability in case of hardware failures or disasters.
    4. User Access Control: Thecus N7770-10G allows administrators to set up user accounts and control access permissions at various levels. This ensures that only authorized users can access specific folders or files, preventing unauthorized access to sensitive data.
    5. Antivirus Integration: The NAS device can integrate with antivirus software to scan files for malware and viruses. This helps in preventing the spread of malicious software within the NAS and protects the data stored on the device.
    6. Network Security: Thecus N7770-10G supports various network security protocols, such as HTTPS, IP filtering, and firewall, to protect against unauthorized access and network attacks.
    7. Physical Security: The NAS device is equipped with lockable drive bays and a security slot for a Kensington lock, providing physical security against theft.
    8. Firmware Updates and Security Patches: Thecus regularly releases firmware updates and security patches to address any vulnerabilities and ensure the device remains secure against emerging threats.

    Overall, the Thecus N7770-10G NAS device provides several robust features and measures to ensure data security, including encryption, RAID support, backup options, access control, antivirus integration, network security protocols, and physical security features.

  • How does the Thecus N7770-10G NAS device protect against unauthorized access and data breaches?

    The Thecus N7770-10G NAS device incorporates several security measures to protect against unauthorized access and data breaches:

    1. User Authentication: The device supports multiple user accounts with different levels of access privileges. Each user must provide a username and password to access the NAS, ensuring only authorized individuals can log in.
    2. Access Control: The NAS offers granular access control settings, allowing administrators to define which users or groups have access to specific folders, files, or services. This helps prevent unauthorized access to sensitive data.
    3. Encryption: Thecus N7770-10G supports AES 256-bit data encryption, which ensures that all data stored on the NAS is encrypted and protected from unauthorized access. Even if the physical drives are stolen, the data remains secure.
    4. Firewall and IP Blocking: The device has a built-in firewall that monitors incoming and outgoing network traffic, blocking any suspicious or unauthorized connections. It also supports IP blocking, allowing administrators to restrict access from specific IP addresses or ranges.
    5. SSL/TLS Support: The NAS supports SSL/TLS encryption for secure remote access. This ensures that data transmitted between the NAS and remote clients is encrypted and protected from interception.
    6. Antivirus and Antimalware: Thecus N7770-10G NAS integrates antivirus and antimalware scanning capabilities. It can regularly scan files and folders for potential threats, preventing malware from infecting the NAS and compromising data.
    7. Network Isolation: The device supports VLAN (Virtual Local Area Network) functionality, allowing administrators to isolate different network segments. This helps prevent unauthorized access from devices on other network segments.
    8. Data Backup and Snapshot: The NAS provides various backup options, such as scheduled backups to external devices or cloud storage. Additionally, it supports snapshot technology, allowing users to take point-in-time snapshots of their data, which can be used for data recovery in case of a breach or accidental deletion.
    9. Auditing and Logging: The NAS keeps detailed logs of user activities, system events, and file access. These logs can be reviewed by administrators to identify any suspicious or unauthorized activities.

    By implementing these security features, the Thecus N7770-10G NAS device aims to protect against unauthorized access and data breaches, ensuring the confidentiality, integrity, and availability of stored data.

  • Can you explain the encryption options available on the Thecus N7770-10G NAS device and how they contribute to data security?

    The Thecus N7770-10G NAS device offers several encryption options to enhance data security. These options include:

    1. AES 256-bit Volume Encryption: This encryption method uses the Advanced Encryption Standard (AES) with a 256-bit key length. It provides a high level of security and is widely regarded as one of the most secure encryption algorithms available. With AES 256-bit volume encryption, all data stored on the NAS is encrypted, ensuring that even if the hard drives are removed or stolen, the data remains inaccessible without the encryption key.
    2. SSL/TLS Encryption: The Thecus N7770-10G NAS supports Secure Sockets Layer (SSL) and Transport Layer Security (TLS) encryption protocols. These protocols encrypt data during transmission over the network, protecting it from unauthorized access or interception. SSL/TLS encryption is particularly important when accessing the NAS remotely or transferring sensitive data over the internet.
    3. Network Data Encryption: This option allows you to encrypt network data traffic between the NAS and other devices on the network. By encrypting the data packets, it prevents unauthorized users from intercepting and reading the data as it travels across the network.
    4. iSCSI Volume Encryption: The Thecus N7770-10G NAS also supports iSCSI volume encryption, which encrypts data stored on iSCSI volumes. iSCSI is a protocol used for accessing storage devices over a network, and by encrypting the data stored on these volumes, it ensures the confidentiality and integrity of the data.

    These encryption options contribute to data security by providing multiple layers of protection. By encrypting data at rest (on the hard drives), in transit (over the network), and on specific volumes, the NAS ensures that even if someone gains physical access to the device or intercepts the data during transmission, they cannot access the information without the encryption keys. This helps safeguard sensitive data from unauthorized access, theft, or tampering, providing peace of mind for users concerned about data security.

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