Extracting Data from a RAID Disk When NAS TerraMaster D5-330 D5 Thunderbolt3 Does Not Power Up: Step-by-Step Guide

Has your NAS TerraMaster D5-330 D5 Thunderbolt3 suddenly lost its network drive and you’re unsure what to do next? Did the RAID array collapse, making your files inaccessible? Is the device throwing errors during startup? Perhaps you accidentally rebuilt the RAID array or several hard drives failed at the same time?

Extracting Data from a RAID Disk When NAS TerraMaster D5-330 D5 Thunderbolt3 Does Not Power Up: Step-by-Step Guide
Data Recovery Tool

TerraMaster D5-330 D5 Thunderbolt3 NAS Data Recovery in 2025

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from an D5-330 D5 Thunderbolt3. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

Extracting Data from a RAID Disk When NAS TerraMaster D5-330 D5 Thunderbolt3 Does Not Power Up: Step-by-Step Guide

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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Why Regular Data Recovery Tools Can’t Restore Files from RAID

Conventional hard drives store user data by writing it sequentially across the disk surface, which means an entire file is typically located on a single drive. In contrast, when data is written to a RAID array, each file is split into multiple fragments. These fragments are then distributed and written in sequence across all the drives in the array. Depending on the configuration, fragment sizes can range from 2 KB to 2 MB, so every file is physically stored across several disks at once.

This approach significantly increases read and write performance — after all, writing two halves of a 1 GB file to two drives simultaneously is much faster than writing the full 1 GB to a single disk. However, this same mechanism makes file recovery far more complex.

Different RAID levels use different methods to distribute and protect data. On top of that, manufacturers like TerraMaster often add their own proprietary structures and variations. As a result, data can be written to disks in many different formats, and each requires a specific approach during recovery.

How can a NAS TerraMaster D5-330 D5 Thunderbolt3 device's caching policy impact data loss risks?

The caching policy of a NAS (Network Attached Storage) device like the TerraMaster D5-330 D5 Thunderbolt3 can impact data loss risks in the following ways:

  1. Write-back caching: This caching policy allows data to be written to the cache first and then gradually moved to the storage disks in the background. While this improves write performance, there is a risk of data loss if a power outage or system failure occurs before the data is completely written to the disks. In such cases, any data in the cache that has not been written to the disks may be lost.
  2. Write-through caching: This caching policy immediately writes data to both the cache and the storage disks simultaneously. This reduces the risk of data loss as the data is written to the disks right away. However, it may impact write performance compared to write-back caching.
  3. No caching: Some NAS devices may allow you to disable caching altogether. In this case, data is written directly to the storage disks without utilizing any cache. While this eliminates the risk of data loss due to cache failure or power outage, it might result in slower write performance compared to caching-enabled configurations.

It's important to note that caching policies are typically configurable on NAS devices, allowing users to choose the option that best suits their needs. However, it's crucial to understand the trade-offs between performance and data loss risks when selecting a caching policy. Additionally, implementing appropriate backup strategies and uninterruptible power supply (UPS) systems can help mitigate data loss risks regardless of the caching policy chosen.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS D5-330 D5 Thunderbolt3 can be accessed over the network, you still need to remove its hard disks and connect them directly to a Windows PC. Only then can the recovery software properly scan and analyze the drives. Follow these steps:

  1. Power off the NAS and disconnect it from the power source.

    WARNING! Before removing any drives, carefully read the device manual. Improper actions may damage both the NAS enclosure and the hard disks in the RAID array.

  2. Remove the hard disks one by one, gently sliding each drive out of its slot. Remember that hard disks are highly sensitive: any impact or drop can cause serious physical damage.

  3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

  4. Connect the drives to your computer. In this video, we explain which ports you can use to connect hard disks and what to do if your PC does not have enough free connectors.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

Hetman Raid Recovery

This program restores data from damaged RAID arrays and is fully compatible with TerraMaster D5-330 D5 Thunderbolt3. Each hard disk in the array contains technical metadata describing how files were written. When launched, Hetman RAID Recovery analyzes this metadata, automatically reconstructs the damaged array, and provides access to its contents. After that, you can browse the recovered disk and save your files. The program can also restore files that were accidentally deleted from the network drive.

Go to view
How to recover data from a TerraMaster

How to recover data from a TerraMaster

D5-330 D5 Thunderbolt3 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;

How to Safely Recover Data from Disk Images

This utility allows you to create a complete copy of a disk and work with the disk image instead of the physical drive. This approach helps protect your data from:

  • Overwriting during the recovery process;
  • Additional data loss caused by bad sectors;
  • User errors.

To create a disk image, follow these steps:

  1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

  2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

  3. When the Image Creation Wizard opens, select whether you want to save the entire disk or only a specific region. Adjust the settings and click Next.

    Hetman RAID Recovery: Image Creation Wizard

  4. Choose the directory where the image will be saved. You may select any available disk connected to your PC or upload the image via FTP.

    Hetman RAID Recovery: Choose a disk or save the image via FTP

Where Are the User’s Files Actually Stored?

The TerraMaster D5-330 D5 Thunderbolt3 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.

RAID Recovery Software: Detailed Comparison

Product Operating system RAID controller support Supported file systems Virtual RAID controller support Data recovery from damaged RAID File preview
Hetman RAID Recovery Windows, Linux, MacOS Yes, over 100 controllers FAT, exFAT, NTFS, ReFS, APFS, HFS+, Ext4, Ext3, Ext2, ReiserFS, Btrfs, VMFS, Hikvision, XFS, UFS, ZFS Yes Yes Yes
DiskInternals RAID Recovery Windows Yes, over 10 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
R-Studio Windows, Mac, Linux Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
UFS Explorer RAID Recovery Windows, Mac, Linux Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
EaseUS Data Recovery Windows Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
ReclaiMe Free RAID Recovery Windows Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes

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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 D5-330 D5 Thunderbolt3, feel free to leave a comment!
    Reply
  • Bubba Comerford
    Bubba Comerford 10.09.2023 13:45 #
    Can data recovery from a NAS TerraMaster D5-330 D5 Thunderbolt3 device be performed if there are issues with the network interface card or port?
    Reply
    • Hetman Software
      Hetman Software 10.09.2023 15:00 #

      Yes, data recovery from a NAS TerraMaster D5-330 D5 Thunderbolt3 device can still be performed even if there are issues with the network interface card or port. The NAS device typically allows for direct connection to a computer via Thunderbolt or USB, bypassing the network interface. This means that even if the network interface is not functioning properly, you can still connect the NAS directly to a computer using Thunderbolt or USB and access the data.

      Reply
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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 xaker.ru, 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.

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Questions and answers

  • How user-friendly is the web interface of the NAS TerraMaster D5-330 D5 Thunderbolt3? Can you provide a detailed overview of its features and functionality?

    The web interface of the NAS TerraMaster D5-330 D5 Thunderbolt3 is designed to be user-friendly and intuitive, making it easy for users to navigate and manage their data. Here is a detailed overview of its features and functionality:

    1. Dashboard: The web interface provides a dashboard that gives you an overview of your NAS system. It displays information such as system status, storage capacity, network details, and system health.
    2. File Management: You can easily manage your files and folders through the web interface. It supports basic file operations like copying, moving, renaming, and deleting. You can also create new folders, upload files, and download them directly from the interface.
    3. Storage Management: The NAS TerraMaster D5-330 D5 Thunderbolt3 allows you to manage your storage efficiently. You can create RAID arrays, expand storage capacity, and monitor the health of your drives. It also supports features like hot swapping, which allows you to replace a faulty drive without powering down the system.
    4. User and Group Management: You can create multiple user accounts and assign different access permissions to them. This enables you to control who can access specific files and folders on the NAS. You can also create user groups for easier management.
    5. Network Settings: The web interface provides options to configure network settings such as IP address, DNS, and gateway. It supports both dynamic and static IP configurations.
    6. Backup and Sync: You can set up scheduled backups to external devices or remote servers using protocols like Rsync. The NAS also supports cloud storage services like Dropbox, Google Drive, and OneDrive for easy synchronization of your data.
    7. Application Center: The NAS TerraMaster D5-330 D5 Thunderbolt3 has an application center where you can install various applications to extend its functionality. It offers applications for media streaming, file sharing, surveillance, and more.
    8. Security: The web interface allows you to configure security settings to protect your data. You can enable features like firewall, SSL/TLS encryption, and IP blocking to enhance the security of your NAS.
    9. System Settings: You can customize various system settings through the web interface. This includes managing system updates, configuring email notifications, setting up power management options, and more.

    Overall, the web interface of the NAS TerraMaster D5-330 D5 Thunderbolt3 provides a comprehensive set of features and functionality for easy management of your data. It is designed to be user-friendly, allowing both novice and advanced users to effectively utilize the NAS system.

  • Are there any specific security measures or authentication protocols implemented in the web interface of the NAS TerraMaster D5-330 D5 Thunderbolt3? How does it ensure the safety of data and prevent unauthorized access?

    The NAS TerraMaster D5-330 D5 Thunderbolt3 implements several security measures and authentication protocols to ensure the safety of data and prevent unauthorized access. Here are some of the key security features:

    1. User Access Control: The NAS supports user and group-based access control, allowing administrators to create multiple user accounts with different access permissions. This ensures that only authorized users can access specific data or perform certain actions.
    2. Password Protection: User accounts are protected by passwords, ensuring that only individuals with valid credentials can log in and access the NAS.
    3. Two-Factor Authentication (2FA): The NAS supports 2FA, which adds an extra layer of security by requiring users to provide a second form of authentication, such as a verification code sent to their mobile device, in addition to their password.
    4. HTTPS Encryption: The web interface of the NAS uses HTTPS (HTTP Secure) protocol to encrypt the communication between the user's browser and the NAS, ensuring that data transmitted over the network is secure and protected from eavesdropping or tampering.
    5. Network Security: The NAS supports various network security features like firewall settings, IP blocking, and SSL/TLS encryption for secure remote access, preventing unauthorized access from external networks.
    6. Data Encryption: The NAS supports AES 256-bit data encryption, allowing users to encrypt their data stored on the device. This ensures that even if the physical device is stolen or accessed without authorization, the data remains encrypted and inaccessible.
    7. Automatic Firmware Updates: The NAS regularly receives firmware updates from TerraMaster, which include security patches and bug fixes. Keeping the firmware up to date ensures that any known security vulnerabilities are addressed promptly.

    It's important to note that while these security measures provide a strong level of protection, it's also crucial for users to follow best practices such as using strong passwords, regularly updating firmware, and implementing secure network configurations to further enhance the security of the NAS and its data.

  • Can you explain the process of accessing and managing files through the web interface of the NAS TerraMaster D5-330 D5 Thunderbolt3? Are there any limitations or restrictions in terms of file types, sizes, or transfer speeds?

    To access and manage files through the web interface of the TerraMaster D5-330 D5 Thunderbolt3 NAS, you can follow these steps:

    1. Connect the NAS to your network and power it on.
    2. Open a web browser on your computer and enter the IP address of the NAS.
    3. Log in to the web interface using your username and password.
    4. Once logged in, you will be able to navigate through the file system similar to how you would on a computer.
    5. You can create folders, upload files, download files, delete files, and perform other file management tasks using the web interface.
    6. The web interface may also provide additional features like file sharing, access control, and remote access.

    In terms of limitations or restrictions, there might be a few considerations:

    1. File Types: The NAS should support a wide range of file types, including documents, images, videos, and audio files. However, certain proprietary or uncommon file types may not be supported.
    2. File Sizes: The NAS should support files of various sizes, including small and large files. However, there might be a maximum file size limit imposed by the NAS or the file system used.
    3. Transfer Speeds: The transfer speeds may depend on various factors such as the network infrastructure, the NAS's hardware capabilities, and the type of connection (wired or wireless). Thunderbolt3 connection, which the TerraMaster D5-330 supports, offers high-speed data transfer rates, but the actual speed may be influenced by other factors in the network.

    It's recommended to refer to the user manual or documentation provided by TerraMaster for specific details on file type support, maximum file sizes, and expected transfer speeds for the D5-330 NAS.
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