How to recover data from Thecus N8880U-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 N8880U-10G

Thecus N8880U-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 N8880U-10G.

How to recover data from NAS Thecus N8880U-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.

How can hardware failure lead to data loss in NAS Thecus N8880U-10G devices?

Hardware failure in NAS Thecus N8880U-10G devices can lead to data loss in several ways:

  1. Hard Drive Failure: The most common hardware failure in NAS devices is hard drive failure. If one or more hard drives fail in the NAS, it can result in data loss. The data stored on the failed drives may become inaccessible or corrupted. RAID configurations can provide some level of data redundancy and protection against drive failure, but if multiple drives fail or the RAID array is not properly configured, data loss can still occur.
  2. Power Supply Failure: A power supply failure can cause the NAS device to shut down unexpectedly, potentially resulting in data loss. If the NAS is not properly shut down or the power outage is prolonged, it can lead to file system corruption and data loss.
  3. Network Interface Failure: The network interface card (NIC) in the NAS can fail, making it inaccessible over the network. This can prevent users from accessing their data stored on the NAS, resulting in data loss.
  4. Controller Failure: The RAID controller in the NAS can fail, leading to data loss. If the controller malfunctions or becomes faulty, it may not be able to properly manage the data stored on the drives, resulting in data corruption or loss.
  5. Overheating: Overheating can cause hardware components in the NAS to fail. If the cooling system in the NAS is inadequate or fails, it can lead to overheating of the drives, power supply, or other critical components, potentially resulting in data loss.

To mitigate the risk of data loss due to hardware failure, it is important to regularly backup the data stored on the NAS to an external storage device or a cloud-based backup service. Additionally, monitoring the health of hardware components, ensuring proper cooling, and using redundant RAID configurations can help prevent or minimize data loss in case of hardware failures.

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

Although NAS N8880U-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 N8880U-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

N8880U-10G 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 N8880U-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 N8880U-10G, feel free to leave a comment!
  • Wade Rogers
    Wade Rogers 13.09.2023 10:02 #
    Can data recovery from a NAS Thecus N8880U-10G device be performed if there are issues with the disk array or storage pool?
    • Hetman Software
      Hetman Software 13.09.2023 11:05 #

      Yes, data recovery from a NAS device like Thecus N8880U-10G can be performed even if there are issues with the disk array or storage pool. However, the success of data recovery depends on the specific nature of the issues and the extent of the damage.

      If there are issues with the disk array or storage pool, it is recommended to contact a professional data recovery service provider who specializes in NAS devices. They have the expertise and tools required to diagnose and recover data from such complex storage systems.

      It's important to note that attempting DIY data recovery without proper knowledge or experience can lead to further data loss or permanent damage. Therefore, it is advisable to seek professional help in such situations.

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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 network settings that can be configured on the NAS Thecus N8880U-10G?

    The Thecus N8880U-10G NAS offers various network settings that can be configured. Some of the key settings include:

    1. Network Interface: The NAS supports multiple network interfaces, including Ethernet ports and 10 Gigabit SFP+ ports. These interfaces can be configured for different network modes, such as bonding or load balancing.
    2. IP Address: The NAS can be assigned a static IP address or configured to obtain an IP address automatically through DHCP.
    3. DNS Settings: DNS servers can be configured to resolve domain names and enable internet connectivity.
    4. Network Protocols: The NAS supports various network protocols, such as TCP/IP, IPv4, IPv6, FTP, SMB, NFS, and more. These protocols can be enabled or disabled based on specific requirements.
    5. VLAN Configuration: Virtual LANs (VLANs) can be created to segment the network and enhance security and performance. The NAS allows configuring VLAN settings to segregate network traffic.
    6. Link Aggregation: The NAS supports link aggregation, which combines multiple network interfaces to increase bandwidth and provide redundancy. This feature can be configured to improve network performance.
    7. Port Forwarding: Port forwarding enables access to the NAS from the internet by redirecting specific ports to the NAS's IP address. This setting is useful for remote access and services like FTP or web hosting.
    8. Network Services: The NAS offers various network services, such as DHCP server, dynamic DNS, VPN server, and more. These services can be configured to enhance network functionality.
    9. Firewall: The NAS includes a built-in firewall that allows configuring rules to control incoming and outgoing network traffic. Firewall settings can be customized to improve network security.
    10. Network Time Protocol (NTP): The NAS can be synchronized with an NTP server to ensure accurate timekeeping. NTP settings can be configured to automatically update the system time.

    These are some of the key network settings that can be configured on the Thecus N8880U-10G NAS, providing flexibility and customization options for networking requirements.

  • How can the network interface be optimized for maximum performance on the NAS Thecus N8880U-10G?

    To optimize the network interface for maximum performance on the Thecus N8880U-10G NAS, you can follow these steps:

    1. Ensure that you have a compatible and high-speed network infrastructure. The Thecus N8880U-10G supports 10 Gigabit Ethernet (10GbE), so make sure your network switches, routers, and cables are capable of handling this speed.
    2. Configure the network interface settings on the NAS. Access the NAS administration interface and navigate to the network settings. Set the network interface to use the highest available speed (10GbE) and full-duplex mode for maximum performance.
    3. Enable jumbo frames if supported by your network infrastructure. Jumbo frames allow for larger data packets to be transmitted, reducing overhead and improving network performance. Check your network switches and routers for jumbo frame support and enable it on both the NAS and the network devices.
    4. Utilize link aggregation (also known as bonding or teaming) if you have multiple network interfaces available. Link aggregation combines multiple network interfaces into a single logical interface, increasing bandwidth and redundancy. Configure link aggregation on the NAS and ensure that your network infrastructure supports it.
    5. Optimize network settings on the client devices accessing the NAS. Ensure that the client devices are also configured to use the highest available speed (10GbE) and full-duplex mode. Adjust the network settings on the client devices to match the NAS settings for optimal performance.
    6. Regularly update the NAS firmware and drivers. Thecus periodically releases firmware updates that may include performance improvements and bug fixes. Check for updates on the Thecus website and apply them to keep your NAS up to date.
    7. Use high-quality network cables. Ensure that you are using Cat6a or Cat7 Ethernet cables, as they are designed to handle 10GbE speeds and provide better performance compared to lower-grade cables.
    8. Optimize the NAS configuration for your specific use case. Depending on the type of data and applications you are using on the NAS, you may need to adjust settings such as RAID configuration, caching, or network services to maximize performance.
    9. Regularly monitor and optimize network performance. Utilize network monitoring tools to identify any bottlenecks or performance issues. Adjust settings, upgrade hardware, or optimize network configurations as needed to ensure maximum performance.

    Note: It's always recommended to refer to the official documentation and support resources provided by Thecus for detailed instructions and specific recommendations for your NAS model.

  • Are there any specific security settings that should be configured on the NAS Thecus N8880U-10G to ensure data protection and prevent unauthorized access?

    Yes, there are several security settings that can be configured on the Thecus N8880U-10G NAS to ensure data protection and prevent unauthorized access. Here are some important settings to consider:

    1. Change the default administrator username and password: The first step is to change the default login credentials to prevent unauthorized access. Use a strong, unique password that is not easily guessable.
    2. Enable firewall: The NAS should have a built-in firewall that can be enabled to filter incoming and outgoing network traffic. Configure the firewall to allow only necessary services and block all other unnecessary traffic.
    3. Enable network encryption: The NAS should support protocols like SSL/TLS for secure communication over the network. Enable encryption for all network services to protect data during transmission.
    4. Set up user accounts and access control: Create individual user accounts with strong passwords for each person who needs access to the NAS. Assign appropriate access permissions to each user, allowing only the necessary level of access to files and folders.
    5. Enable two-factor authentication (2FA): Thecus NAS devices often support 2FA, which adds an extra layer of security by requiring a second verification step, such as a unique code sent to a mobile device, in addition to the username and password.
    6. Regularly update firmware: Keep the NAS firmware up to date with the latest security patches and bug fixes. Regularly check for updates and apply them promptly to ensure the system is protected against known vulnerabilities.
    7. Enable network access restrictions: Configure the NAS to allow access only from trusted IP addresses or networks. This can help prevent unauthorized access from external sources.
    8. Disable unnecessary services: Disable any unused or unnecessary services on the NAS to minimize potential attack vectors. Only enable the services that are required for your specific use case.
    9. Enable data encryption: Thecus NAS devices often offer the option to encrypt data stored on the drives. Enable this feature to ensure that even if physical access to the drives is obtained, the data remains protected.
    10. Regularly backup data: Implement a regular backup strategy to ensure that important data is protected in case of accidental deletion, hardware failure, or a security breach. Store backups in a separate location or on a different NAS for added redundancy.

    It's important to consult the user manual or contact Thecus support for specific instructions on configuring these security settings on the N8880U-10G NAS, as the interface and options may vary slightly between different models and firmware versions.

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