How to recover data from QNAP VS-6020 Pro NAS

Is your network drive gone, and you are wondering what to do? Has a RAID system crashed, and your files are no longer accessible? Does your device display an error while booting? Have you accidentally rebuilt your RAID system? Are several hard disks out of order?

How to recover data from NAS QNAP VS-6020 Pro

QNAP VS-6020 Pro NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from VS-6020 Pro.

How to recover data from NAS QNAP VS-6020 Pro

Recover data from damaged RAID arrays inaccessible from a computer.

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.

Can inadequate cooling or high ambient temperatures impact data loss risks for NAS QNAP VS-6020 Pro devices?

Yes, inadequate cooling or high ambient temperatures can indeed impact data loss risks for NAS QNAP VS-6020 Pro devices.

NAS devices like the QNAP VS-6020 Pro generate heat during operation, especially when multiple hard drives are running simultaneously. Inadequate cooling can result in the device overheating, which can lead to various issues such as:

  1. Hard drive failure: Excessive heat can cause hard drives to fail prematurely, leading to potential data loss. High temperatures can degrade the performance and reliability of hard drives over time.
  2. Reduced lifespan of components: Continuous exposure to high temperatures can shorten the lifespan of various components in the NAS device, including the CPU, memory, and power supply. This can increase the risk of hardware failures and potential data loss.
  3. Increased risk of data corruption: High temperatures can increase the likelihood of data corruption on the hard drives, especially during read/write operations. This can result in the loss or corruption of files and data stored on the NAS.

To mitigate these risks, it is important to ensure proper cooling for the NAS device. This can be achieved by:

  1. Adequate ventilation: Ensure that the NAS device is placed in a well-ventilated area with sufficient airflow. Avoid placing it in enclosed spaces or near heat sources.
  2. Cooling fans: Check if the NAS device has built-in cooling fans and ensure they are functioning properly. Consider adding additional fans if necessary.
  3. Temperature monitoring: Some NAS devices have built-in temperature monitoring features. Regularly check the temperature readings and take necessary actions if the device is running too hot.
  4. Regular maintenance: Keep the NAS device clean and free from dust accumulation, as dust can hinder proper airflow and cooling.

By taking these precautions, you can help minimize the risk of data loss due to inadequate cooling or high ambient temperatures for your NAS QNAP VS-6020 Pro device.

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

Although NAS VS-6020 Pro 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 VS-6020 Pro. 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

VS-6020 Pro has 6 HDD slots, and it supports the following array types:

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

NAS supports:

  • ZFS;
  • EXT4;
  • EXT3;
  • exFAT;
  • 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 VS-6020 Pro 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


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 VS-6020 Pro, feel free to leave a comment!
  • Ezra Oxspring
    Ezra Oxspring 17.09.2023 09:44 #
    Is it possible to recover data from a NAS QNAP VS-6020 Pro device that has undergone a system restore or factory reset?
    • Hetman Software
      Hetman Software 17.09.2023 10:00 #

      It is generally not possible to recover data from a NAS device that has undergone a system restore or factory reset. These actions are designed to reset the device to its original state, which includes erasing all data and configurations.

      However, if you have a backup of your data stored elsewhere, you can restore it to the NAS device after the reset. It's always recommended to regularly backup your important data to avoid data loss 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, 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.


Questions and answers

  • What are the main features and capabilities of the NAS QNAP VS-6020 Pro that make it suitable for saving video files?

    The QNAP VS-6020 Pro is a Network Attached Storage (NAS) device specifically designed for saving and managing video files. Some of its main features and capabilities that make it suitable for this purpose include:

    1. High storage capacity: The VS-6020 Pro supports up to 20 hard drives, allowing for massive storage capacity. This is essential for storing large video files, especially high-resolution or 4K videos.
    2. Powerful hardware: It is equipped with a powerful Intel Xeon processor and up to 128GB of RAM, ensuring smooth and efficient video processing and transcoding. This is important for tasks like video editing or streaming.
    3. Video surveillance support: The VS-6020 Pro is compatible with various IP cameras, making it ideal for video surveillance applications. It supports real-time monitoring, recording, and playback of surveillance footage.
    4. Advanced video transcoding: It supports hardware-accelerated video transcoding, allowing you to convert video files into different formats or resolutions for compatibility with different devices or streaming services.
    5. High-speed connectivity: It offers multiple Gigabit Ethernet ports, ensuring fast data transfer speeds for seamless video streaming and file access.
    6. RAID support: The VS-6020 Pro supports various RAID configurations, providing data redundancy and protection against drive failures. This is crucial for safeguarding video files from loss or corruption.
    7. Scalability: It supports expansion units, allowing you to increase storage capacity as your video file collection grows. This scalability is essential for long-term video storage needs.
    8. User-friendly interface: The QNAP operating system (QTS) provides an intuitive and user-friendly interface for easy management and access to video files. It also offers various multimedia applications for organizing, playing, and sharing videos.

    Overall, the QNAP VS-6020 Pro offers high storage capacity, powerful hardware, advanced video transcoding, and video surveillance support, making it a suitable choice for saving and managing video files.

  • How does the NAS QNAP VS-6020 Pro ensure reliable and secure storage of video files?

    The NAS QNAP VS-6020 Pro ensures reliable and secure storage of video files through several features and mechanisms:

    1. Redundant Array of Independent Disks (RAID): The NAS supports various RAID configurations, such as RAID 0, 1, 5, 6, 10, 50, and 60. These configurations provide data redundancy and fault tolerance, ensuring that even if one or more disks fail, the video files remain accessible and intact.
    2. Snapshot and Snapshot Replica: QNAP NAS supports snapshot technology, allowing users to take point-in-time snapshots of their video files. This feature enables quick recovery in case of accidental deletion or modification of files. Snapshot Replica provides additional protection by replicating snapshots to a remote NAS, ensuring data integrity even in the event of a disaster.
    3. AES 256-bit Encryption: The NAS supports AES 256-bit encryption, ensuring that video files stored on the device are securely encrypted and protected from unauthorized access. This encryption provides an added layer of security, especially when the NAS is connected to a network.
    4. Network Security: QNAP NAS offers various network security features, such as SSL/TLS encryption, IP blocking, and trusted IP settings. These measures prevent unauthorized access and protect the video files from potential network attacks.
    5. Antivirus Protection: The NAS comes with built-in antivirus software that scans files for malware and viruses. This helps to prevent any potential threats from infecting the video files and compromising their integrity.
    6. User Access Control: QNAP NAS allows administrators to set up user access control and permissions. This ensures that only authorized users have access to the video files, minimizing the risk of accidental or intentional data loss or modification.
    7. Surveillance Station: The VS-6020 Pro is specifically designed for video surveillance applications. It supports QNAP's Surveillance Station, which provides advanced features like video analytics, motion detection, and event management. This enhances the overall security and reliability of video storage.

    Overall, the NAS QNAP VS-6020 Pro combines various hardware and software features to ensure reliable and secure storage of video files, protecting them from data loss, unauthorized access, and potential threats.

  • Can the NAS QNAP VS-6020 Pro handle high-definition or 4K video files efficiently, and what are the recommended settings for optimal performance?

    Yes, the NAS QNAP VS-6020 Pro can handle high-definition and 4K video files efficiently. To ensure optimal performance, here are some recommended settings:

    1. Use RAID configuration: Set up a RAID level that suits your needs, such as RAID 5 or RAID 6, to provide data redundancy and improve performance.
    2. Install SSD cache: Adding SSD cache can significantly enhance the NAS's performance when handling large video files. It helps accelerate data access and reduces latency.
    3. Enable hardware acceleration: QNAP VS-6020 Pro supports hardware acceleration for video transcoding. Enabling this feature offloads the CPU, resulting in smoother playback and faster file transfers.
    4. Optimize network settings: Connect the NAS to a high-speed network switch or router to ensure sufficient bandwidth for streaming and transferring large video files.
    5. Use a compatible media player: When streaming 4K videos, use media players that support hardware decoding of HEVC/H.265 codec. This reduces the load on the NAS and ensures smooth playback.
    6. Update firmware: Regularly update the NAS firmware to benefit from performance improvements and bug fixes.
    7. Consider transcoding settings: If you need to transcode videos on the NAS, adjust the transcoding settings to match your requirements. This includes selecting the appropriate resolution, bitrate, and codec options.

    Remember, the optimal settings may vary depending on your specific use case and network environment. It's recommended to consult the QNAP documentation or reach out to their support for further assistance.

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