How to recover data from TerraMaster D5-300 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 TerraMaster D5-300

TerraMaster D5-300 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from D5-300.

How to recover data from NAS TerraMaster D5-300

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 TerraMaster 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 preventive measures to minimize the risk of data loss on NAS TerraMaster D5-300 devices?

Yes, there are several preventive measures you can take to minimize the risk of data loss on NAS TerraMaster D5-300 devices. Here are some recommendations:

  1. Regular backups: Implement a regular backup strategy to ensure that your data is regularly backed up to an external storage device or cloud storage. This will provide an additional copy of your data in case of any data loss or device failure.
  2. RAID configuration: Configure your NAS device in a RAID configuration, such as RAID 1 or RAID 5, which provides data redundancy. This means that even if one drive fails, your data will still be accessible from the remaining drives.
  3. Use reliable hard drives: Ensure that you use high-quality and reliable hard drives in your NAS device. Choose drives specifically designed for NAS usage, as they are built to handle continuous operations and have better reliability.
  4. Regular firmware updates: Keep your NAS device's firmware up to date. Manufacturers often release firmware updates that include bug fixes, security patches, and performance improvements. Regularly check for updates and apply them as necessary.
  5. Implement user access controls: Set up proper user access controls and permissions to restrict unauthorized access to your data. Assign appropriate access rights to different users and regularly review and update these permissions as needed.
  6. Protect against power outages: Use a reliable uninterruptible power supply (UPS) to protect your NAS device from sudden power outages. Power outages can cause data corruption or loss, so having a UPS will help prevent such issues.
  7. Secure network connection: Ensure that your NAS device is connected to a secure network. Use strong passwords for your network and NAS device login credentials. Consider enabling encryption protocols, such as SSL/TLS, for secure data transfer.
  8. Monitor device health: Regularly monitor the health of your NAS device, including hard drive status, temperature, and system logs. Most NAS devices provide monitoring tools or software that can alert you to any potential issues or failures.

By following these preventive measures, you can significantly reduce the risk of data loss on your NAS TerraMaster D5-300 device.

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

Although NAS D5-300 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 TerraMaster D5-300. 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 TerraMaster

How to recover data from a TerraMaster

D5-300 has 4 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • JBOD;

NAS supports:

  • Ext2;
  • Ext3;
  • Ext4;
  • Btrfs;

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 TerraMaster D5-300 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 D5-300, feel free to leave a comment!
  • Israel Coates
    Israel Coates 10.09.2023 13:16 #
    Can data recovery from a NAS TerraMaster D5-300 device be done if the storage disks have bad sectors?
    • Hetman Software
      Hetman Software 10.09.2023 14:30 #

      Yes, data recovery from a NAS TerraMaster D5-300 device can still be possible even if the storage disks have bad sectors. However, the success of the recovery process would depend on the severity of the bad sectors and the effectiveness of the data recovery software or services used.

      If the bad sectors are limited and the majority of the data is still intact, data recovery software or services may be able to recover the data by skipping over the bad sectors and retrieving the remaining information.

      In more severe cases, where a large number of bad sectors are present, it may be necessary to seek professional data recovery services. These services have specialized hardware and expertise to recover data from damaged storage devices, including NAS devices.

      It is important to note that attempting data recovery on your own or using unreliable software can potentially worsen the situation and result in permanent data loss. Therefore, it is recommended to consult with professional data recovery services for the best chance of successful recovery.

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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 does the NAS TerraMaster D5-300 facilitate the process of copying data from different devices?

    The NAS TerraMaster D5-300 is a storage device designed to facilitate the process of copying data from different devices. Here's how it works:

    1. Network Attached Storage (NAS) Functionality: The D5-300 is a NAS device, which means it connects to your local network and acts as a centralized storage hub. It has multiple drive bays where you can install hard drives or SSDs.
    2. Data Sharing and Accessibility: Once connected to your network, the D5-300 allows you to share and access data from multiple devices such as computers, laptops, smartphones, or tablets. This enables you to copy data from these devices to the NAS for storage or vice versa.
    3. File Transfer Protocols: The D5-300 supports various file transfer protocols like FTP, SMB, NFS, and AFP. These protocols enable seamless copying of data between the NAS and different devices. For example, you can use the SMB protocol to copy files from a Windows computer to the NAS or use FTP to transfer files from a smartphone to the NAS.
    4. RAID Configuration: The D5-300 supports RAID configurations like RAID 0, RAID 1, RAID 5, RAID 10, and JBOD. RAID provides data redundancy and performance improvements. By configuring your drives in RAID, you can copy data from different devices to the NAS with added data protection or increased performance, depending on the RAID level chosen.
    5. Software and Apps: The D5-300 comes with its own operating system and software that provides a user-friendly interface for managing and copying data. It also supports various apps that can facilitate the copying process, such as backup software, synchronization tools, or cloud storage integration.

    Overall, the NAS TerraMaster D5-300 simplifies the process of copying data from different devices by providing a centralized storage solution, supporting various file transfer protocols, offering RAID configurations, and providing user-friendly software and apps for data management.

  • What are the key features and capabilities of the NAS TerraMaster D5-300 that make it an effective tool for data transfer?

    The NAS TerraMaster D5-300 possesses several key features and capabilities that make it an effective tool for data transfer:

    1. High-speed data transfer: The D5-300 supports high-speed data transfer with its USB 3.0 interface, allowing for quick and efficient transfer of large files and data sets.
    2. RAID support: This NAS device supports RAID 0, 1, 3, 5, 10, and JBOD configurations. RAID provides data redundancy and improves performance, ensuring data integrity and protection during transfer.
    3. Large storage capacity: The D5-300 can accommodate up to five 3.5-inch SATA hard drives, providing ample storage space for data transfer and backup needs.
    4. Hot-swappable drive bays: The device features hot-swappable drive bays, allowing for easy installation and replacement of hard drives without powering down the system. This feature ensures uninterrupted data transfer and simplifies drive maintenance.
    5. Multiple data protection mechanisms: The D5-300 supports multiple data protection mechanisms, including hardware RAID, AES hardware encryption, and scheduled backups. These features enhance data security during transfer and storage.
    6. Cross-platform compatibility: The NAS TerraMaster D5-300 is compatible with various operating systems, including Windows, macOS, and Linux. This versatility allows for seamless data transfer across different platforms.
    7. User-friendly management interface: The device comes with an intuitive web-based management interface, enabling easy configuration, monitoring, and control of data transfer operations. Users can conveniently manage file sharing, user permissions, and network settings.
    8. Expandability: The D5-300 supports daisy-chaining, allowing users to connect multiple units together for expanded storage capacity. This feature is particularly useful for businesses or individuals with growing data transfer needs.

    Overall, the NAS TerraMaster D5-300 combines high-speed data transfer, reliable data protection, and user-friendly management features, making it an effective tool for efficient and secure data transfer.

  • Can the NAS TerraMaster D5-300 copy data from various devices simultaneously, and what are the supported connection methods for different devices?

    Yes, the NAS TerraMaster D5-300 supports simultaneous data copying from various devices. It offers multiple connection methods for different devices, including:

    1. USB 3.0: You can connect external hard drives, USB flash drives, or other USB storage devices directly to the NAS via the USB 3.0 ports.
    2. Ethernet: The NAS has a Gigabit Ethernet port that allows you to connect it to your local network. This enables data transfer from computers, laptops, or other networked devices.
    3. HDMI: The NAS supports HDMI output, allowing you to connect it to a monitor or TV for direct access and data transfer.
    4. Thunderbolt 3: The TerraMaster D5-300 has two Thunderbolt 3 ports that provide high-speed data transfer and daisy-chaining capabilities. You can connect Thunderbolt-enabled devices such as Mac computers or Thunderbolt storage devices.

    These connection methods offer flexibility and convenience for copying data from various devices simultaneously.

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