How to recover data from QNAP VS-6012 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-6012 Pro

QNAP VS-6012 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-6012 Pro.

How to recover data from NAS QNAP VS-6012 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 data be lost during the process of upgrading or updating the NAS QNAP VS-6012 Pro device's firmware?

Yes, there is a possibility of data loss during the process of upgrading or updating the firmware of a NAS device like the QNAP VS-6012 Pro. While firmware updates are generally designed to be safe and preserve data, there can be unforeseen issues or errors that may cause data loss.

To minimize the risk, it is recommended to take certain precautions before updating the firmware:

  1. Backup your data: Make sure to have a backup of all important data stored on the NAS device. This can be done by copying the data to an external storage device or another location.
  2. Verify the update process: Before initiating the firmware update, carefully read the release notes or documentation provided by QNAP. Ensure you are following the correct update procedure and have a clear understanding of the steps involved.
  3. Stable power supply: Ensure that the NAS device has a stable power supply during the update process. Any power interruptions or fluctuations can potentially cause data corruption or loss.
  4. Use a stable network connection: It is recommended to have a stable and reliable network connection during the firmware update. A network interruption during the update process can also lead to data loss.
  5. Follow recommended best practices: Follow any specific instructions or recommendations provided by QNAP for updating the firmware. These may include steps like disabling certain services or applications before the update.

By taking these precautions, you can minimize the risk of data loss during the firmware update process. However, it is always a good practice to have regular backups of your data to ensure its safety.

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

Although NAS VS-6012 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-6012 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-6012 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-6012 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-6012 Pro, feel free to leave a comment!
  • Bo Hodgkinson
    Bo Hodgkinson 17.09.2023 07:45 #
    Is it possible to recover data from a NAS QNAP VS-6012 Pro device that has suffered a power loss or sudden shutdown?
    • Hetman Software
      Hetman Software 17.09.2023 09:00 #

      Yes, it is possible to recover data from a NAS QNAP VS-6012 Pro device that has suffered a power loss or sudden shutdown. However, the success of data recovery depends on the extent of the damage caused by the power loss or sudden shutdown.

      If the data on the NAS device is corrupted or inaccessible due to the sudden shutdown, you can try the following steps to recover the data:

      1. Power off the NAS device and unplug it from the power source.
      2. Remove the hard drives from the NAS device.
      3. Connect the hard drives to a computer using a SATA to USB adapter or by installing them directly into the computer.
      4. Use data recovery software such as Recuva, EaseUS Data Recovery Wizard, or Stellar Data Recovery to scan the connected hard drives and recover the lost data.
      5. Once the data is recovered, you can transfer it to a different storage device such as an external hard drive or another NAS device.

      If the data recovery software does not work or if the hard drives are physically damaged, it is recommended to seek professional data recovery services. They have specialized tools and expertise to recover data from damaged NAS devices.

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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 necessary steps to connect an IP camera to a QNAP VS-6012 Pro NAS?

    To connect an IP camera to a QNAP VS-6012 Pro NAS, you need to follow these necessary steps:

    1. Ensure that your IP camera is compatible with the QNAP NAS. Check the QNAP website or user manual for the list of supported cameras.
    2. Connect the IP camera to your local network using an Ethernet cable or via Wi-Fi. Make sure the camera is powered on and accessible on your network.
    3. Log in to your QNAP NAS web interface. Open a web browser and enter the IP address of your NAS in the address bar. Enter your credentials to access the NAS management interface.
    4. Go to the "Surveillance Station" app. This app allows you to manage and configure IP cameras on your QNAP NAS.
    5. In the Surveillance Station app, click on "Camera Settings" or a similar option. This will open the camera configuration page.
    6. Click on "Add" or "Add Camera" to start the camera setup process.
    7. Select your camera brand and model from the list or choose "Generic" if your camera is not listed. Enter the required information such as camera name, IP address, port number, username, and password. These details can usually be found in the camera's user manual or its configuration interface.
    8. Configure additional settings according to your preferences, such as video quality, recording schedules, motion detection, etc.
    9. Click "Apply" or "Save" to save the camera settings. The QNAP NAS will try to establish a connection with the IP camera.
    10. Once the connection is established, you should be able to view the camera's live feed and access its recordings through the Surveillance Station app.

    Note: The steps may vary slightly depending on the specific model of your QNAP NAS and the version of the Surveillance Station app. It is recommended to refer to the NAS user manual or QNAP support documentation for detailed instructions.

  • What are the advantages of connecting an IP camera to a NAS like QNAP VS-6012 Pro?

    Connecting an IP camera to a NAS like QNAP VS-6012 Pro offers several advantages:

    1. Centralized storage: By connecting IP cameras to a NAS, all the recorded video footage can be stored in a centralized location. This eliminates the need for separate storage devices for each camera and simplifies the management and retrieval of video data.
    2. Scalability: NAS devices like QNAP VS-6012 Pro typically support multiple hard drives, allowing for easy expansion of storage capacity as the number of connected cameras or the amount of recorded footage increases. This scalability ensures that the system can accommodate future growth without the need for significant hardware changes.
    3. Enhanced data protection: NAS devices often provide various data protection features like RAID (redundant array of independent disks) configurations, which can help safeguard against data loss due to hard drive failures. Additionally, NAS devices may offer options for automatic backups and snapshot functionality, further enhancing data protection.
    4. Remote access and monitoring: NAS devices usually come with built-in remote access capabilities. This allows users to access the IP camera feeds and recorded footage from anywhere using a web browser or dedicated mobile apps. Remote monitoring and access provide convenience and flexibility, enabling users to monitor their surveillance system on the go.
    5. Advanced video management features: NAS devices often come with robust video management software, offering features like motion detection, event-based recording, and advanced search options. These features enhance the effectiveness and efficiency of video surveillance by allowing users to easily find specific incidents or footage of interest.
    6. Cost-effectiveness: Connecting IP cameras to a NAS eliminates the need for a dedicated video management system (VMS) software or hardware, which can be costly. NAS devices offer a cost-effective solution as they combine storage, video management, and remote access functionalities into a single device.
    7. Integration with other applications: NAS devices often support integration with other applications and services, such as video analytics, access control systems, or alarm systems. This integration allows for a more comprehensive and integrated security solution, enhancing overall surveillance effectiveness.

    Overall, connecting an IP camera to a NAS like QNAP VS-6012 Pro provides centralized storage, scalability, data protection, remote access, advanced video management features, cost-effectiveness, and integration capabilities, making it an advantageous choice for IP camera surveillance systems.

  • Are there any specific compatibility requirements or settings to consider when connecting a particular IP camera model to a QNAP VS-6012 Pro NAS?

    To connect an IP camera to a QNAP VS-6012 Pro NAS, there are a few compatibility requirements and settings to consider:

    1. Camera Compatibility: Ensure that the IP camera model you are using is compatible with the QNAP NAS. QNAP provides a list of supported IP camera models on their website. Check if your camera model is listed or if it supports standard protocols like ONVIF or RTSP.
    2. Network Connectivity: Make sure that both the IP camera and the QNAP NAS are connected to the same network. The camera should have a valid IP address and be reachable from the NAS.
    3. Camera Configuration: Configure the IP camera with the appropriate settings such as IP address, subnet mask, gateway, and port number. Ensure that the camera is set up to stream video using a supported protocol (e.g., RTSP) and that the necessary credentials (username/password) are set.
    4. QNAP Surveillance Station: The QNAP VS-6012 Pro NAS comes with the Surveillance Station app, which provides comprehensive surveillance features. Install and configure the Surveillance Station app on the NAS. Access the Surveillance Station web interface and go to the "Camera" settings section.
    5. Adding IP Camera: In the Surveillance Station web interface, click on "Add Camera" and select the appropriate camera model or use the "Generic" option if your camera is not listed. Enter the camera's IP address, port number, and authentication details. Choose the appropriate protocol (e.g., RTSP) and enter the necessary video stream path or URL.
    6. Test and Verify: After adding the camera, click on "Test Connection" to verify if the camera can be successfully connected to the NAS. If the connection is successful, you should be able to see the camera's live video feed in the Surveillance Station interface.

    By following these compatibility requirements and settings, you should be able to connect a compatible IP camera model to a QNAP VS-6012 Pro NAS using the QNAP Surveillance Station app.

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