How to recover data from QNAP VS-6016 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-6016 Pro

QNAP VS-6016 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-6016 Pro.

How to recover data from NAS QNAP VS-6016 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.

Are there any limitations or restrictions on file or folder names that can cause potential data loss on NAS QNAP VS-6016 Pro devices?

Yes, there are limitations and restrictions on file and folder names that can potentially cause data loss on QNAP VS-6016 Pro devices. Some of the limitations and restrictions include:

  1. Unsupported characters: QNAP NAS devices do not support certain characters in file or folder names, such as / : * ? " < > |. Using these characters can cause issues and potential data loss.
  2. File name length: The maximum length for a file name on QNAP NAS devices is 255 characters. If a file name exceeds this limit, it may cause problems and potential data loss.
  3. File system limitations: QNAP NAS devices use different file systems, such as EXT4 or NTFS. Each file system has its own limitations on file and folder names. For example, NTFS has limitations on characters like *, ?, and < >, which can cause data loss if used in file or folder names.
  4. Case sensitivity: QNAP NAS devices are case-sensitive, which means that "File.txt" and "file.txt" are considered different files. This can cause confusion and potential data loss if not handled correctly.

To avoid potential data loss, it is recommended to follow best practices when naming files and folders on QNAP NAS devices. Use only supported characters, avoid exceeding the maximum length, and be mindful of case sensitivity.

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

Although NAS VS-6016 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-6016 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-6016 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-6016 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-6016 Pro, feel free to leave a comment!
  • Todd Grover
    Todd Grover 17.09.2023 08:45 #
    Are there any software tools available for data recovery from NAS QNAP VS-6016 Pro?
    • Hetman Software
      Hetman Software 17.09.2023 09:59 #

      Yes, there are several software tools available for data recovery from QNAP NAS devices, including the QNAP NAS Data Recovery software itself. Some other popular data recovery software options for QNAP NAS devices are:

      1. EaseUS Data Recovery Wizard: It is a user-friendly tool that supports data recovery from QNAP NAS devices and can recover various file types.
      2. Stellar Data Recovery: This software supports QNAP NAS devices and can recover deleted or lost data from RAID arrays.
      3. R-Studio: It is a powerful data recovery software that supports QNAP NAS devices and can recover data from various file systems and RAID configurations.
      4. GetDataBack: This software supports QNAP NAS devices and can recover data from various file systems and RAID configurations.

      It is important to note that data recovery from a QNAP NAS device can be a complex process, and it is recommended to consult with a professional data recovery service if the data is critical or if you are not familiar with the recovery process.

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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 key features and functionalities of the NAS QNAP VS-6016 Pro web interface?

    The NAS QNAP VS-6016 Pro web interface offers a range of key features and functionalities, including:

    1. Dashboard: The web interface provides a comprehensive dashboard that gives an overview of the system's status, including CPU and memory usage, network activity, and storage capacity.
    2. File Management: Users can easily manage their files and folders through the web interface. They can create, delete, move, and rename files and folders, as well as perform file searches and organize files into different categories.
    3. Storage Management: The web interface allows users to manage their storage efficiently. They can create and manage storage pools, RAID configurations, and volumes. It also provides features like hot spare, SSD caching, and storage expansion.
    4. User and Group Management: Users can create and manage user accounts and groups through the web interface. They can assign different access permissions to users and groups, ensuring secure and controlled access to the NAS.
    5. Network Services: The web interface allows users to configure various network services, such as FTP, SMB/CIFS, NFS, and iSCSI. Users can set up and manage network protocols, IP settings, and firewall rules.
    6. Backup and Restore: Users can easily configure backup and restore tasks through the web interface. It supports various backup options, including local backup, remote backup, and cloud backup. Users can schedule regular backups and restore data when needed.
    7. App Center: The web interface provides access to the QNAP App Center, where users can install and manage various applications and add-ons. This includes productivity tools, media servers, surveillance applications, and more.
    8. System Settings: Users can configure and customize various system settings through the web interface. This includes system preferences, security settings, notification settings, and power management options.
    9. Monitoring and Notifications: The web interface offers monitoring capabilities, allowing users to monitor system resources, network connections, and storage usage. It also provides customizable notifications for events like system errors, storage failures, and backup completion.
    10. Mobile Access: The web interface is optimized for mobile devices, allowing users to access and manage their NAS remotely through smartphones and tablets. This enables easy file access, media streaming, and system management on the go.

    Overall, the NAS QNAP VS-6016 Pro web interface provides a user-friendly and feature-rich platform for managing and accessing the NAS, ensuring efficient storage management and data protection.

  • How user-friendly is the web interface of the NAS QNAP VS-6016 Pro, and what customization options does it offer?

    The web interface of the NAS QNAP VS-6016 Pro is generally considered to be user-friendly. It provides a straightforward and intuitive interface that allows users to easily navigate and access various features and settings.

    The customization options offered by the web interface are extensive. Users can customize the appearance and layout of the interface by choosing different themes and arranging widgets according to their preferences. They can also create shortcuts to frequently used functions, rearrange menus, and customize the dashboard to display the most relevant information.

    Furthermore, the web interface allows users to install and manage various applications and services, such as multimedia servers, backup solutions, surveillance systems, and more. Users can also configure network settings, user permissions, and access control to tailor the NAS to their specific needs.

    Overall, the web interface of the QNAP VS-6016 Pro NAS provides a user-friendly experience and offers a wide range of customization options to meet individual requirements.

  • Can you explain the security measures and access controls provided by the web interface of the NAS QNAP VS-6016 Pro?

    The web interface of the QNAP VS-6016 Pro NAS (Network Attached Storage) device provides several security measures and access controls to ensure the protection of data and prevent unauthorized access. Here are some of the key security features:

    1. User Authentication: The web interface requires users to authenticate themselves using a username and password. This ensures that only authorized individuals can access the NAS.
    2. User Management: The NAS allows administrators to create and manage user accounts with different levels of access privileges. This helps in restricting access to specific folders, files, or functions based on user roles.
    3. HTTPS Support: The web interface supports HTTPS (Hypertext Transfer Protocol Secure) for secure communication between the user's browser and the NAS. This ensures that data transmitted over the network is encrypted and protected from eavesdropping.
    4. IP Access Control: Administrators can define a whitelist of IP addresses or IP ranges that are allowed to access the NAS. This restricts access to the NAS from unauthorized networks or locations.
    5. Two-Factor Authentication (2FA): The NAS supports 2FA, which adds an extra layer of security by requiring users to provide a second form of verification, such as a unique code generated by a mobile app, in addition to their username and password.
    6. Network Security: The NAS supports various network security protocols, such as SSL/TLS, firewall settings, and network access protection, to safeguard against network-based attacks.
    7. Audit Logs: The NAS keeps detailed logs of user activities, including login attempts, file operations, and system changes. These logs can help in monitoring and investigating any suspicious activities.
    8. Firmware Updates: QNAP regularly releases firmware updates to address any security vulnerabilities and improve the overall security of the NAS. It is important to keep the firmware up to date to benefit from the latest security enhancements.

    It is worth noting that while the NAS provides these security measures, it is also essential for users to follow best practices, such as using strong passwords, regularly updating firmware, and implementing additional security measures like antivirus software and data encryption, to ensure comprehensive protection of their data.

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