RAID Controller Failure on NAS QNAP Turbo Station TS-451D2 / TS-451DeU: What Happens and How to Recover Data

Learn about RAID controller failure on ⭐ NAS and how it impacts data recovery.

RAID Controller Failure on NAS QNAP Turbo Station TS-451D2 / TS-451DeU: What Happens and How to Recover Data

QNAP Turbo Station TS-451D2 / TS-451DeU NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from Turbo Station TS-451D2 / TS-451DeU.

RAID Controller Failure on NAS QNAP Turbo Station TS-451D2 / TS-451DeU: What Happens and How to Recover Data

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 QNAP 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 known issues or limitations when using NAS QNAP Turbo Station TS-451D2 / TS-451DeU devices with virtualization platforms such as VMware or Hyper-V?

There are a few known issues and limitations when using NAS QNAP Turbo Station TS-451D2 / TS-451DeU devices with virtualization platforms such as VMware or Hyper-V. Some of these include:

  1. Limited hardware resources: The TS-451D2 / TS-451DeU devices have limited hardware resources, including CPU, RAM, and storage capacity. This can limit the number and performance of virtual machines that can be hosted on the NAS.
  2. Lack of hardware virtualization support: The TS-451D2 / TS-451DeU devices do not have built-in hardware virtualization support, such as Intel VT-x or AMD-V. This can impact the performance and compatibility of virtual machines running on the NAS.
  3. Limited network bandwidth: The NAS devices typically have limited network bandwidth compared to dedicated virtualization servers. This can affect the performance of virtual machines, especially if they require high network throughput.
  4. Lack of advanced virtualization features: The TS-451D2 / TS-451DeU devices may lack advanced virtualization features found in dedicated virtualization servers, such as live migration, high availability, or advanced management capabilities.
  5. Compatibility issues: There may be compatibility issues between the NAS firmware and the virtualization platform, especially when using the latest versions of VMware or Hyper-V. It is important to check for firmware updates and compatibility lists provided by QNAP.
  6. Limited scalability: The TS-451D2 / TS-451DeU devices have limited scalability compared to dedicated virtualization servers. If you require a large number of virtual machines or need to scale up your virtualization environment, a dedicated server may be a better choice.

It is recommended to review the specifications, compatibility lists, and user forums for the specific NAS model and virtualization platform you plan to use to ensure compatibility and address any known issues.

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

Although NAS Turbo Station TS-451D2 / TS-451DeU 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 QNAP Turbo Station TS-451D2 / TS-451DeU. 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 QNAP

How to recover data from a QNAP

Turbo Station TS-451D2 / TS-451DeU has 4 HDD slots, and it supports the following array types:

  • RAID 5;
  • RAID 6;
  • RAID 10;
  • RAID 0;
  • RAID 1;
  • JBOD;

NAS supports:

  • ZFS;
  • EXT4;
  • EXT3;
  • FAT32 (External Disk Only);
  • NTFS (External Disk Only);
  • HFS+ (External Disk Read Only);

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 QNAP Turbo Station TS-451D2 / TS-451DeU network-attached storage keeps QTS (QuTS hero) 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 (1)

  • 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 Turbo Station TS-451D2 / TS-451DeU, feel free to leave a comment!
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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 steps to connect to a QNAP Turbo Station TS-451D2 / TS-451DeU NAS device?

    To connect to a QNAP Turbo Station TS-451D2 / TS-451DeU NAS device, you can follow these steps:

    1. Power on the NAS device and connect it to your local network using an Ethernet cable.
    2. Make sure your computer is also connected to the same network.
    3. Open a web browser on your computer and enter the IP address of the NAS device in the address bar. The default IP address for QNAP NAS devices is usually "http://192.168.1.100" or "http://find.qnap.com".
    4. Press Enter to access the QNAP NAS login page.
    5. Enter the default username and password. The default username is usually "admin", and the default password is "admin" or "password". If you have changed the default credentials, use the new username and password.
    6. Click on the "Login" button to log in to the QNAP NAS web interface.
    7. Once logged in, you can configure and manage your QNAP NAS device using the web interface.

    Note: It is recommended to change the default username and password for security purposes after the initial setup.

  • What are the recommended network settings for connecting to a QNAP Turbo Station NAS?

    To connect to a QNAP Turbo Station NAS, you should ensure the following network settings:

    1. IP Address: Configure the NAS with a static IP address on your network. This ensures that the NAS will always have the same IP address and can be easily accessed.
    2. Subnet Mask: Set the subnet mask to match the network configuration of your network. The default subnet mask is usually 255.255.255.0.
    3. Gateway: Enter the IP address of your router as the gateway. This allows the NAS to communicate with devices outside of your local network.
    4. DNS Server: Enter the IP address of your DNS server. This is typically the IP address of your router or a public DNS server like Google DNS (8.8.8.8).
    5. Port Forwarding: If you want to access the NAS from outside your local network, you may need to set up port forwarding on your router. This allows incoming connections on specific ports to be forwarded to the NAS.
    6. Network Speed: Set the network speed to match the capabilities of your network. If you have a Gigabit network, set the speed to 1000 Mbps for optimal performance.
    7. Network Discovery: Enable network discovery on the NAS to allow it to be easily found by other devices on the network.

    These settings can usually be configured through the NAS's web interface or management software. Refer to the QNAP Turbo Station NAS documentation or user manual for specific instructions on configuring the network settings.

  • How can I access the files and folders stored on a QNAP Turbo Station NAS from my computer or mobile device?

    To access the files and folders stored on a QNAP Turbo Station NAS from your computer or mobile device, you can follow these steps:

    1. Ensure that your QNAP Turbo Station NAS is connected to your network and powered on.
    2. On your computer, open a web browser and enter the IP address of your QNAP Turbo Station NAS in the address bar. This will open the QTS (QNAP Turbo Station) web interface.
    3. Log in to the QTS web interface using your admin credentials.
    4. Once logged in, you will see the QTS desktop. From here, you can navigate through the file explorer to access your files and folders. You can upload, download, delete, or manage your files as needed.
    5. To access your files and folders from a mobile device, you can download the Qfile app from the App Store (iOS) or Google Play Store (Android). Install the app on your device.
    6. Open the Qfile app and enter the IP address or DDNS hostname of your QNAP Turbo Station NAS. Then, enter your login credentials.
    7. Once connected, you will be able to browse and manage your files and folders stored on the QNAP Turbo Station NAS directly from your mobile device.

    Note: Make sure that your QNAP Turbo Station NAS is accessible from your computer or mobile device by checking your network settings and firewall configurations.

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