Steps to Extract Data from a RAID Disk if NAS TerraMaster D2-330 TD2 Thunderbolt 3 is Not Powering Up

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS TerraMaster D2-330 TD2 Thunderbolt 3
• How to Remove Hard Disks from Your NAS and Connect Them to a PC
  • Step-by-Step Data Recovery with Hetman RAID Recovery
  • How to Safely Recover Data from Disk Images
  • Where Are the User’s Files Actually Stored?
  • RAID Recovery Software: Detailed Comparison

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 storage tiering or caching strategies impact data availability and potential loss on NAS TerraMaster D2-330 TD2 Thunderbolt 3 devices?

Storage tiering and caching strategies can have a significant impact on data availability and potential loss on NAS TerraMaster D2-330 TD2 Thunderbolt 3 devices. Here's how:

1. Improved Data Availability: Storage tiering allows you to categorize data based on its importance or frequency of access. By automatically moving frequently accessed or critical data to faster storage tiers (such as SSDs), you can ensure faster access times and improved data availability. This means that important data will be readily accessible, reducing the risk of potential loss due to delays or unavailability.
2. Enhanced Performance: Caching strategies, such as SSD caching, can significantly boost performance by storing frequently accessed data in a high-speed cache. This reduces the need to fetch data from slower HDDs, resulting in faster read and write speeds. Improved performance ensures that data is readily available and reduces the chances of potential loss due to sluggish response times or bottlenecks.
3. Data Redundancy and Protection: Some storage tiering strategies, such as using RAID configurations, offer data redundancy and protection against potential loss. RAID configurations can distribute data across multiple drives, providing redundancy and allowing for data recovery in case of drive failures. This protects against data loss and ensures high data availability even in the event of hardware failures.
4. Efficient Resource Utilization: Storage tiering and caching strategies optimize resource utilization by ensuring that frequently accessed data is stored on faster storage tiers. This reduces the load on slower storage tiers, allowing them to be used for less critical or infrequently accessed data. Efficient resource utilization minimizes the risk of potential loss by ensuring that data is stored and accessed in the most appropriate manner.
5. Backup and Disaster Recovery: By implementing storage tiering and caching strategies, you can allocate specific storage tiers for backups and disaster recovery purposes. This ensures that critical data is backed up and readily available for recovery in case of data loss or system failures. Proper backup and disaster recovery mechanisms minimize the potential loss of data and ensure its availability when needed.

In summary, storage tiering and caching strategies on NAS TerraMaster D2-330 TD2 Thunderbolt 3 devices can improve data availability, enhance performance, provide data redundancy, optimize resource utilization, and facilitate backup and disaster recovery, thereby reducing the potential loss of data.

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

Although the NAS D2-330 TD2 Thunderbolt 3 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.

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   How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

This program restores data from damaged RAID arrays and is fully compatible with TerraMaster D2-330 TD2 Thunderbolt 3. 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.

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How to recover data from a TerraMaster

D2-330 TD2 Thunderbolt 3 has 2 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• 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.

   

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.

   

Where Are the User’s Files Actually Stored?

The TerraMaster D2-330 TD2 Thunderbolt 3 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