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

TerraMaster D5-300C NAS Data Recovery in 2024

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

How to recover data from NAS TerraMaster D5-300C

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.

Can the use of specific data recovery software or services impact the success rate of data retrieval from NAS TerraMaster D5-300C devices?

Yes, the use of specific data recovery software or services can impact the success rate of data retrieval from NAS TerraMaster D5-300C devices. The success of data recovery depends on various factors such as the complexity of the data loss situation, the extent of damage to the device, and the effectiveness of the recovery software or service used.

Using reliable and professional data recovery software or services specifically designed for NAS devices can significantly increase the chances of successful data retrieval. These specialized tools have features and algorithms tailored for NAS systems, which can help in recovering data from different types of storage configurations and file systems used by the TerraMaster D5-300C.

However, it is important to note that not all data recovery software or services are created equal. Some may have better compatibility, advanced recovery algorithms, and support for specific NAS systems, which can enhance the success rate of data retrieval. It is recommended to research and choose reputable and trusted software or services with positive reviews and a proven track record in recovering data from NAS devices.

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

Although NAS D5-300C 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 D5-300C. 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

D5-300C 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 D5-300C 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 D5-300C, feel free to leave a comment!
  • Seth Braithwaite
    Seth Braithwaite 10.09.2023 13:43 #
    Is it possible to recover data from a NAS TerraMaster D5-300C device that has been affected by a natural disaster such as flooding or earthquake?
    • Hetman Software
      Hetman Software 10.09.2023 14:59 #

      Recovering data from a NAS device that has been affected by a natural disaster such as flooding or earthquake can be challenging but not impossible. Here are a few factors to consider:

      1. Damage Assessment: The first step is to assess the extent of the damage caused by the natural disaster. If the device has been submerged in water or physically damaged, it may require professional assistance to recover the data.
      2. Data Redundancy: If you had implemented data redundancy measures like RAID (Redundant Array of Independent Disks) on your NAS device, there is a higher chance of recovering the data. In such cases, the data may be spread across multiple drives, and even if one or two drives are damaged, the data can still be recovered.
      3. Professional Data Recovery Services: In severe cases, where the device is extensively damaged, it is recommended to seek professional data recovery services. These specialists have specialized tools and techniques to recover data from damaged storage devices. However, keep in mind that this can be an expensive process.
      4. Data Backup: Having a separate backup of your important data is crucial. If your NAS device is affected by a natural disaster, having a backup stored in a different location or on cloud storage will ensure your data is safe.

      Remember, the success of data recovery depends on the extent of the damage and the measures taken to protect and backup your data. It is always recommended to consult a professional data recovery service for the best chance of recovering your data.

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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 steps involved in accessing files on the NAS TerraMaster D5-300C from a remote location?

    To access files on the NAS TerraMaster D5-300C from a remote location, you can follow these steps:

    1. Ensure the NAS is connected to the internet: Make sure the NAS is connected to your network and has access to the internet. This can be done by connecting the NAS to your router using an Ethernet cable.
    2. Configure port forwarding: Access your router's settings and configure port forwarding to allow remote access to the NAS. Typically, you need to forward ports 80 (HTTP) and 443 (HTTPS) to the NAS's local IP address.
    3. Set up Dynamic DNS (DDNS): If your internet service provider assigns you a dynamic IP address, you will need to set up DDNS to assign a domain name to your NAS. This allows you to access the NAS using a consistent domain name, even if your IP address changes.
    4. Enable remote access on the NAS: Access the NAS's management interface through a web browser by entering its local IP address. Navigate to the settings or network section and enable remote access. You may need to set up a username and password for remote access.
    5. Configure firewall settings: If you have a firewall enabled on your router or NAS, make sure to allow incoming connections to the necessary ports (80 and 443) to enable remote access.
    6. Install and configure a VPN (optional): For added security, you can set up a Virtual Private Network (VPN) on your NAS. This will create a secure connection between your remote device and the NAS, allowing you to access files securely.
    7. Access files remotely: Once the above steps are completed, you can access your files remotely. Open a web browser on your remote device and enter the DDNS domain name or your NAS's public IP address. You should be prompted to enter your username and password. After logging in, you will have access to your files on the NAS.

    Note: The specific steps may vary depending on your network setup and NAS model. It is recommended to refer to the NAS manufacturer's documentation or support resources for detailed instructions.

  • What are the security measures in place to ensure the safe access of files on the NAS TerraMaster D5-300C from a remote location?

    The TerraMaster D5-300C NAS device offers several security measures to ensure safe access to files from a remote location. These measures include:

    1. User Authentication: The NAS device requires user authentication before granting access to files. It supports various authentication methods such as username/password, LDAP, and Windows AD.
    2. Data Encryption: The TerraMaster D5-300C supports AES 256-bit encryption for data transmission and storage. This ensures that files are securely encrypted both during transmission over the internet and when stored on the NAS.
    3. SSL/TLS Support: The NAS device supports SSL/TLS protocols for secure data transmission. This ensures that data sent between the remote location and the NAS is encrypted, preventing unauthorized access or interception.
    4. Two-Factor Authentication (2FA): The TerraMaster D5-300C supports two-factor authentication, which adds an extra layer of security. Users can enable 2FA to require a second authentication method, such as a verification code sent to a mobile device, in addition to the username and password.
    5. Firewall and IP Access Control: The NAS device allows users to configure firewall settings to restrict access from specific IP addresses or IP ranges. This helps prevent unauthorized access attempts from remote locations.
    6. VPN Support: The TerraMaster D5-300C supports Virtual Private Network (VPN) connections. By setting up a VPN, users can establish a secure and encrypted connection to the NAS, ensuring that files are accessed only by authorized individuals.
    7. Auditing and Logging: The NAS device keeps logs of user activities, including file access, modifications, and login attempts. These logs can be reviewed to monitor and detect any suspicious activities.
    8. Automatic Firmware Updates: TerraMaster regularly releases firmware updates to address security vulnerabilities and enhance the device's security. Users should keep the NAS firmware up to date to ensure they have the latest security patches.

    It is important to note that while the TerraMaster D5-300C offers these security measures, it is also crucial for users to follow best practices, such as using strong passwords, regularly updating passwords, and being cautious while granting access permissions to remote users.

  • Are there any limitations or restrictions when accessing files on the NAS TerraMaster D5-300C from a remote location?

    Yes, there are some limitations and restrictions when accessing files on the NAS TerraMaster D5-300C from a remote location. Here are a few common ones:

    1. Network Speed: The speed of file access may be limited by the upload and download speeds of your internet connection. If you have a slow internet connection, accessing large files or streaming media from the NAS may be challenging.
    2. Bandwidth Limitations: Some internet service providers impose data caps or bandwidth limitations. If you exceed your data limit, your access to the NAS may be restricted or slowed down.
    3. Firewall and Port Forwarding: To access the NAS remotely, you may need to configure your router's firewall and set up port forwarding. If you're not familiar with these concepts, it might be challenging to establish a remote connection.
    4. Security Concerns: Accessing files remotely introduces security risks, such as potential unauthorized access or data breaches. It's crucial to ensure that your NAS is properly secured with strong passwords, encryption, and other security measures.
    5. Dynamic IP Address: If your internet service provider assigns you a dynamic IP address, it may change periodically. This can make it difficult to maintain a consistent connection to the NAS from a remote location. You may need to use dynamic DNS services to overcome this limitation.
    6. Software Compatibility: The NAS may require specific software or protocols to access files remotely. Ensure that the software you use on your remote device is compatible with the NAS and supports the required protocols (such as FTP, SFTP, or WebDAV).

    It's important to review the user manual and documentation provided by TerraMaster for specific limitations and restrictions when accessing files on the NAS D5-300C remotely.

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