How to recover data from Thecus 1U4500 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 1U4500

Thecus 1U4500 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from 1U4500.

How to recover data from NAS Thecus 1U4500

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.

Are there any recommended practices for off-site backup storage to prevent complete data loss in the event of a disaster?

Yes, there are several recommended practices for off-site backup storage to prevent complete data loss in the event of a disaster. Here are some key practices:

  1. Choose a secure and reliable off-site backup location: Select a location that is geographically distant from your primary site to minimize the risk of both locations being affected by the same disaster. Ensure the off-site facility has appropriate security measures in place to protect your data.
  2. Regularly backup your data: Implement a regular backup schedule to ensure that your data is consistently backed up off-site. This can be done through various methods like cloud storage, tape backups, or remote servers.
  3. Use encryption: Encrypt your data before sending it off-site to ensure its security and confidentiality. This prevents unauthorized access to your data in case of breaches during transit or at the off-site location.
  4. Test your backups: Regularly test your backup and recovery processes to ensure that your data can be successfully restored from the off-site storage. This helps identify any issues or gaps in the backup process.
  5. Implement redundancy: Consider having multiple off-site backup locations to provide redundancy and further safeguard against data loss. This ensures that if one location is compromised, you still have another backup available.
  6. Document and store recovery procedures: Maintain clear documentation of the steps required to recover data from the off-site backup storage. This ensures that in the event of a disaster, you have a well-defined process to follow for restoring your data.
  7. Monitor and update your backup strategy: Continuously monitor and update your backup strategy to adapt to changing business needs and advancements in technology. Regularly assess the effectiveness of your off-site backup storage solution and make necessary improvements.

By following these recommended practices, you can significantly reduce the risk of complete data loss in the event of a disaster.

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

Although NAS 1U4500 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 1U4500. 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

1U4500 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 1U4500 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 1U4500, feel free to leave a comment!
  • Jayden Downer
    Jayden Downer 14.09.2023 15:52 #
    Can data recovery from NAS Thecus 1U4500 be done by individuals or is professional assistance necessary?
    • Hetman Software
      Hetman Software 14.09.2023 17:00 #

      Data recovery from a NAS (Network Attached Storage) device like Thecus 1U4500 can be a complex process and often requires technical expertise. While some individuals with advanced technical knowledge and experience may be able to perform data recovery themselves, it is generally recommended to seek professional assistance.

      Professional data recovery services have specialized tools, equipment, and expertise to handle complex data recovery scenarios. They can ensure the highest chances of successful recovery while minimizing the risk of further data loss or damage to the device.

      Attempting data recovery without proper knowledge or experience can potentially worsen the situation and make data recovery more difficult or even impossible. It is advisable to consult with professional data recovery experts who can assess the situation, provide guidance, and perform the necessary recovery procedures.

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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 specifications of the NAS Thecus 1U4500 that make it suitable for personal cloud storage?

    The key features and specifications of the NAS Thecus 1U4500 that make it suitable for personal cloud storage are:

    1. 1U Rackmount Design: The 1U form factor allows for easy integration into existing server racks, making it space-efficient and suitable for small home or office setups.
    2. High Storage Capacity: The Thecus 1U4500 supports up to four 3.5" SATA hard drives, providing ample storage capacity for personal cloud storage needs.
    3. RAID Support: It supports various RAID configurations (RAID 0, 1, 5, 6, 10, and JBOD), allowing users to choose the level of data redundancy and performance they require.
    4. Intel Atom Processor: The NAS is powered by an Intel Atom processor, providing efficient performance for handling multiple users and data-intensive tasks.
    5. Multiple Connectivity Options: It offers a range of connectivity options, including dual Gigabit Ethernet ports for high-speed network access, USB 3.0 ports for fast data transfer, and an HDMI output for multimedia applications.
    6. Remote Access and Cloud Integration: The Thecus 1U4500 supports remote access, allowing users to access their files and data from anywhere using the internet. It also offers cloud integration with popular services like Dropbox, Google Drive, and Amazon S3, making it easy to sync and backup data.
    7. Data Protection and Security: It provides features like AES 256-bit encryption for secure data transmission and storage. It also supports scheduled backups, snapshot technology, and antivirus software integration to ensure data protection.
    8. User-Friendly Interface: The NAS comes with a user-friendly web-based interface, making it easy to set up and manage personal cloud storage. It also supports mobile apps for remote management and file access.

    Overall, the Thecus 1U4500 offers a combination of storage capacity, performance, connectivity options, and data protection features that make it well-suited for personal cloud storage requirements.

  • How does the NAS Thecus 1U4500 ensure data security and privacy for personal cloud storage?

    The NAS Thecus 1U4500 provides several features to ensure data security and privacy for personal cloud storage:

    1. User Access Control: It allows administrators to create multiple user accounts with different access permissions. This ensures that only authorized individuals can access specific data and folders.
    2. Data Encryption: The NAS supports various encryption algorithms, such as AES 256-bit, to encrypt data stored on the device. This ensures that even if the physical device is compromised, the data remains secure.
    3. Network Security: The NAS supports various network protocols like HTTPS, SSL/TLS, and VPN, which encrypt data during transmission over the network. This prevents unauthorized interception and ensures data privacy.
    4. RAID Support: The NAS supports different RAID levels, such as RAID 0, 1, 5, 6, 10, and JBOD. RAID provides data redundancy and protection against drive failures. If a drive fails, the data can be reconstructed from the remaining drives, ensuring data integrity.
    5. Backup and Snapshot: The NAS provides backup features that allow users to schedule regular backups of their data. Additionally, it supports snapshot technology, which captures the state of the data at a specific point in time. This allows users to restore files to a previous version if they are accidentally modified or deleted.
    6. Antivirus and Antimalware: The NAS can be equipped with antivirus and antimalware software to scan and protect the data stored on the device. This helps to detect and remove any potential threats or malicious files.
    7. Physical Security: The NAS is housed in a 1U rack-mountable chassis, which can be locked and secured in a data center or server room. This prevents physical access to the device, ensuring the security of the stored data.

    Overall, the NAS Thecus 1U4500 incorporates various security measures to ensure data security and privacy for personal cloud storage, protecting data both during storage and transmission.

  • Can the NAS Thecus 1U4500 be easily integrated with popular cloud storage platforms and applications for seamless access and synchronization of data?

    The Thecus 1U4500 is a Network Attached Storage (NAS) device that can be integrated with popular cloud storage platforms and applications to facilitate seamless access and synchronization of data.

    The Thecus NAS devices typically support various cloud storage platforms such as Dropbox, Google Drive, and Microsoft OneDrive. Integration with these platforms can be achieved through the NAS's built-in cloud backup or synchronization features. These features allow you to easily connect your NAS to your cloud storage accounts and automatically sync or backup data between the NAS and the cloud.

    Additionally, Thecus NAS devices often support third-party applications and plugins that can extend their functionality and compatibility with cloud storage platforms. These applications can provide features like direct integration with specific cloud storage services or additional synchronization options.

    Overall, the Thecus 1U4500 can be easily integrated with popular cloud storage platforms and applications, allowing for seamless access and synchronization of data between the NAS and the cloud. However, it is always recommended to check the specific compatibility and supported features of the NAS model you are considering to ensure it meets your requirements.

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