RAID Controller Failure on NAS QNAP Turbo Station TS-351: Causes and Consequences of Data Loss

Understand the impact of RAID controller failure on ⭐ NAS and how to recover your data.

RAID Controller Failure on NAS QNAP Turbo Station TS-351: Causes and Consequences of Data Loss

QNAP Turbo Station TS-351 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-351.

RAID Controller Failure on NAS QNAP Turbo Station TS-351: Causes and Consequences of Data Loss

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 limitations or issues related to specific NAS QNAP Turbo Station TS-351 device models that can lead to data loss?

While the QNAP Turbo Station TS-351 is generally a reliable device, there have been a few reported limitations and issues that could potentially lead to data loss. Here are some known limitations to be aware of:

  1. RAID Rebuild Failure: In some cases, during a RAID rebuild process, the TS-351 may encounter issues that result in data loss. This can happen if there are multiple drive failures or if there are problems with the RAID configuration.
  2. Firmware or Software Bugs: Like any electronic device, the TS-351 may have firmware or software bugs that could potentially cause data loss. It is always recommended to keep the firmware up to date to minimize the risk of encountering such issues.
  3. Hardware Failures: While not specific to the TS-351 model, any hardware component within the device, such as hard drives, power supply units, or the motherboard, can fail and result in data loss. Regular backups and monitoring of hardware health are essential to mitigate this risk.
  4. User Error: Data loss can also occur due to user error, such as accidental deletion, formatting the wrong drive, or improper configuration of the NAS. It is crucial to have proper user training and follow best practices to avoid such incidents.

To minimize the risk of data loss, it is recommended to follow these preventive measures:

  • Regularly backup your data to an external location or cloud storage.
  • Enable RAID redundancy and regularly monitor the health of your drives.
  • Keep the firmware and software up to date.
  • Follow best practices for NAS usage and configuration.
  • Implement a disaster recovery plan.

If you encounter any issues with your QNAP Turbo Station TS-351, it is advisable to contact QNAP support for assistance.

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

Although NAS Turbo Station TS-351 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-351. 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-351 has 3 HDD slots, and it supports the following array types:

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

NAS supports:

  • 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-351 network-attached storage keeps QTS 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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  • 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-351, 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 key features and capabilities of the QNAP Turbo Station TS-351 for data backup purposes?

    The QNAP Turbo Station TS-351 offers several key features and capabilities for data backup purposes:

    1. RAID Protection: The TS-351 supports RAID 5 and RAID 1 configurations, providing data redundancy and protection against drive failures.
    2. Snapshot Protection: It supports snapshot technology, allowing you to take point-in-time snapshots of your data. This feature enables quick recovery in case of accidental file deletion or modification.
    3. Hybrid Backup Sync: The TS-351 comes with QNAP's Hybrid Backup Sync app, which allows you to easily back up your data to external drives, remote servers, or cloud storage services like Amazon S3, Microsoft Azure, and Google Cloud Storage.
    4. RTRR (Real-Time Remote Replication): This feature enables real-time or scheduled data replication to a remote QNAP NAS or an FTP server, ensuring off-site backup for disaster recovery purposes.
    5. Time Machine Support: Mac users can utilize the TS-351 as a Time Machine backup target, allowing seamless backup and restoration of their Mac data.
    6. External Backup Options: The TS-351 provides multiple USB ports and an eSATA port, enabling easy connection of external drives for backup purposes. It also supports USB One Touch Copy, allowing you to quickly back up data from USB storage devices with a single button press.
    7. Backup Scheduling: You can set up flexible backup schedules to automatically back up specific folders or files at regular intervals.
    8. Qsync: Qsync is a file synchronization tool that allows you to synchronize files across multiple devices, ensuring data consistency and availability.
    9. Cloud Backup: The TS-351 supports various cloud backup services, including Amazon S3, Amazon Glacier, Microsoft Azure, Google Cloud Storage, and more. You can easily configure scheduled backups to these cloud platforms.
    10. Data Deduplication and Compression: The TS-351 supports data deduplication and compression, reducing storage space requirements and optimizing backup efficiency.

    Overall, the QNAP Turbo Station TS-351 offers a comprehensive set of features and capabilities for data backup purposes, ensuring data protection, redundancy, and easy restoration options.

  • How does the QNAP Turbo Station TS-351 ensure data security and reliability during the backup process?

    The QNAP Turbo Station TS-351 ensures data security and reliability during the backup process through several features and mechanisms:

    1. RAID Protection: The TS-351 supports various RAID configurations, including RAID 1, which mirrors data across multiple drives. This redundancy ensures that even if one drive fails, the data remains intact and accessible.
    2. Snapshot Technology: QNAP's snapshot technology allows users to take point-in-time snapshots of their data. These snapshots capture the state of the system at a specific moment, providing a reliable and consistent backup. In case of accidental deletion or data corruption, users can easily restore their files from a previous snapshot.
    3. Data Encryption: The TS-351 supports AES 256-bit encryption, which encrypts the data stored on the drives. This ensures that even if the drives are physically stolen or accessed without authorization, the data remains secure and unreadable.
    4. Network Backup: The Turbo Station TS-351 supports various backup methods, including network-based backups. Users can schedule regular backups to remote servers or cloud storage services, ensuring that their data is stored in a separate location for added security and reliability.
    5. Built-in Antivirus: QNAP's antivirus solution scans files and folders in real-time, protecting the system from malware and viruses. This helps to prevent data corruption or loss due to malicious software.
    6. Data Integrity Checks: The TS-351 performs regular data integrity checks to ensure that the stored data remains consistent and error-free. If any data corruption is detected, the system can automatically repair or notify the user to take appropriate action.
    7. Power Loss Protection: The TS-351 is equipped with a built-in battery backup system that provides power to complete ongoing read or write operations in case of a sudden power loss. This ensures that data is not lost or corrupted during the backup process.

    Overall, the QNAP Turbo Station TS-351 combines various features and technologies to ensure data security and reliability during the backup process, protecting against data loss, corruption, and unauthorized access.

  • Can the QNAP Turbo Station TS-351 be integrated with other backup solutions or cloud services for seamless data protection and disaster recovery?

    Yes, the QNAP Turbo Station TS-351 can be integrated with other backup solutions and cloud services for seamless data protection and disaster recovery. The TS-351 supports various backup methods, including local backup to external drives, remote backup to another QNAP NAS or server, and cloud backup to popular cloud storage providers such as Amazon S3, Microsoft Azure, and Google Cloud. Additionally, the TS-351 is compatible with QNAP's own backup solution called Hybrid Backup Sync, which allows you to easily manage and schedule backups to different destinations. This flexibility enables you to create a comprehensive backup and disaster recovery plan that suits your specific needs.

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