How to Retrieve Files from a RAID Disk if NAS Buffalo TeraStation TS-H4.0TGL/R5 Fails to Start

Discover methods to retrieve data from a RAID disk when your ⭐ NAS won't power up.

How to Retrieve Files from a RAID Disk if NAS Buffalo TeraStation TS-H4.0TGL/R5 Fails to Start

Buffalo TeraStation TS-H4.0TGL/R5 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from TeraStation TS-H4.0TGL/R5.

How to Retrieve Files from a RAID Disk if NAS Buffalo TeraStation TS-H4.0TGL/R5 Fails to Start

RAID Recovery™ 2.6
Recover data from damaged RAID arrays inaccessible from a computer.
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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 Buffalo also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

How can RAID (Redundant Array of Independent Disks) configurations impact data loss in NAS Buffalo TeraStation TS-H4.0TGL/R5 devices?

RAID configurations in NAS Buffalo TeraStation TS-H4.0TGL/R5 devices can have a significant impact on data loss prevention. Here are some ways RAID configurations can affect data loss:

  1. Redundancy: RAID configurations, such as RAID 1, RAID 5, or RAID 6, provide redundancy by storing data across multiple disks. This redundancy ensures that if one disk fails, the data can still be accessed from the remaining disks. This helps to prevent data loss in case of disk failures.
  2. Fault tolerance: RAID configurations with parity, such as RAID 5 or RAID 6, can tolerate the failure of one or more disks without losing data. Parity information is distributed across the disks, allowing for data reconstruction even if a disk fails. This fault tolerance helps to minimize the risk of data loss.
  3. Hot spare: Some RAID configurations, like RAID 5 or RAID 6, support the use of a hot spare disk. A hot spare is an extra disk that remains idle until a disk failure occurs. When a disk fails, the hot spare automatically takes its place, reducing the downtime and minimizing the risk of data loss.
  4. Rebuild process: In the event of a disk failure, RAID configurations initiate a rebuild process to reconstruct the lost data using parity information or data redundancy. This process automatically occurs in the background, ensuring that the system remains operational and minimizing the risk of data loss.

However, it's important to note that RAID configurations do not provide complete protection against all types of data loss. They primarily protect against disk failures but cannot prevent data loss due to other factors like accidental deletion, file corruption, or multiple disk failures within a short time frame.

To ensure comprehensive data protection, it is recommended to combine RAID configurations with regular backups to separate storage devices or cloud services. This way, even if a catastrophic event occurs, such as a fire or theft, the data can still be recovered from the backups.

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

Although NAS TeraStation TS-H4.0TGL/R5 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 Buffalo TeraStation TS-H4.0TGL/R5. 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 Buffalo

How to recover data from a Buffalo

TeraStation TS-H4.0TGL/R5 has 4 HDD slots, and it supports the following array types:

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

NAS supports:

  • exFAT, VFAT, FAT 12 / 16 / 32;
  • NTFS / ReFS;
  • APFS / HFS+;
  • Ext2 / 3 / 4 / ReiserFS / XFS / UFS / ZFS / Btrfs;
  • VMFS / HikvisionFS;

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 Buffalo TeraStation TS-H4.0TGL/R5 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

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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 TeraStation TS-H4.0TGL/R5, feel free to leave a comment!
  • Chris Bellhouse
    Chris Bellhouse 29.08.2023 00:42 #
    Is it possible to recover data from a NAS Buffalo TeraStation TS-H4.0TGL/R5 device that has been affected by a controller failure or disk array problem?
    • Hetman Software
      Hetman Software 29.08.2023 02:00 #

      Yes, it is possible to recover data from a NAS Buffalo TeraStation TS-H4.0TGL/R5 device that has been affected by a controller failure or disk array problem. However, the process of data recovery can be complex and may require professional assistance from a data recovery service.

      In such cases, the first step is to diagnose the exact cause of the problem, whether it is a controller failure or a disk array issue. This can be done by troubleshooting the device or consulting with a data recovery specialist.

      Once the cause is determined, appropriate steps can be taken to recover the data. This may involve repairing or replacing the failed controller, rebuilding the disk array, or extracting the data directly from the disks using specialized equipment.

      It is important to note that attempting to recover data from a failed NAS device without proper knowledge and expertise can lead to further data loss or permanent damage. Therefore, it is recommended to seek professional help from a reputable data recovery service in such situations.

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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

  • What are the key features and capabilities of the NAS Buffalo TeraStation TS-H4.0TGL/R5 that make it suitable for video streaming purposes?

    The NAS Buffalo TeraStation TS-H4.0TGL/R5 has several key features and capabilities that make it suitable for video streaming purposes:

    1. High Storage Capacity: It offers a storage capacity of 4 terabytes (TB), which allows for the storage of a large number of video files, ensuring ample space for streaming purposes.
    2. RAID Support: The NAS supports RAID 0, 1, 5, and JBOD configurations. RAID 5 provides data redundancy and fault tolerance, ensuring that video files are protected and accessible even in case of drive failure.
    3. Gigabit Ethernet Connectivity: The TeraStation TS-H4.0TGL/R5 is equipped with a Gigabit Ethernet port, enabling high-speed data transfer and smooth streaming of video content.
    4. DLNA Certification: It is DLNA certified, which means it can seamlessly stream media content to DLNA-compatible devices such as smart TVs, gaming consoles, and media players.
    5. Hot Swap Functionality: The NAS supports hot swapping of hard drives, allowing for easy replacement or expansion of drives without interrupting the streaming process.
    6. User-friendly Interface: The TeraStation features an intuitive web-based interface that makes it easy to set up and manage the device, including configuring streaming settings and accessing media files.
    7. Multi-Platform Compatibility: It supports various operating systems, including Windows, Mac, and Linux, making it compatible with a wide range of devices and systems used for video streaming.
    8. Remote Access: The NAS offers remote access capabilities, allowing users to stream videos from anywhere using a web browser or mobile app, making it convenient for remote viewing or sharing of content.

    Overall, the high storage capacity, RAID support, fast connectivity, DLNA certification, and user-friendly interface make the NAS Buffalo TeraStation TS-H4.0TGL/R5 a suitable choice for video streaming purposes, providing reliable storage and efficient streaming capabilities.

  • Can the NAS Buffalo TeraStation TS-H4.0TGL/R5 support streaming high-definition videos without buffering or lag?

    Yes, the NAS Buffalo TeraStation TS-H4.0TGL/R5 should be able to support streaming high-definition videos without buffering or lag. This NAS device comes with a powerful processor and ample storage capacity, allowing it to handle high-bandwidth tasks like video streaming efficiently. However, it's important to note that the overall streaming performance may also depend on factors like network speed, client device capabilities, and the specific video streaming application being used.

  • What kind of network connectivity options does the NAS Buffalo TeraStation TS-H4.0TGL/R5 offer to ensure seamless video streaming across multiple devices?

    The NAS Buffalo TeraStation TS-H4.0TGL/R5 offers several network connectivity options to ensure seamless video streaming across multiple devices. These options include:

    1. Gigabit Ethernet: The TeraStation has a built-in Gigabit Ethernet port, which allows for high-speed wired network connectivity. This ensures fast and reliable data transfer between the NAS and other devices on the network.
    2. Dual Gigabit Ethernet Ports: The TS-H4.0TGL/R5 model specifically includes two Gigabit Ethernet ports. This allows for link aggregation or port trunking, where both ports can be combined to increase the network bandwidth and provide even faster data transfer speeds.
    3. Wireless Connectivity (Optional): The TeraStation NAS can be equipped with an optional wireless LAN module. This enables wireless connectivity, allowing devices to connect to the NAS over Wi-Fi. However, it's important to note that the availability of wireless connectivity may depend on the specific model and configuration.

    By offering these network connectivity options, the NAS Buffalo TeraStation TS-H4.0TGL/R5 ensures that multiple devices can seamlessly stream videos without any interruptions or buffering issues.

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