How to recover data from QNAP VS-4016U-RP 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-4016U-RP Pro

QNAP VS-4016U-RP 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-4016U-RP Pro.

How to recover data from NAS QNAP VS-4016U-RP 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 recommended practices for protecting NAS QNAP VS-4016U-RP Pro devices against physical theft or unauthorized access that can lead to data loss?

Yes, there are several recommended practices for protecting NAS QNAP VS-4016U-RP Pro devices against physical theft or unauthorized access. Here are a few:

  1. Physical Security: Place the NAS device in a secure location, such as a locked server room or cabinet, to prevent unauthorized physical access.
  2. User Authentication: Implement strong and unique passwords for all user accounts on the NAS device. Enable multi-factor authentication (MFA) if supported to add an extra layer of security.
  3. Network Segmentation: Separate the NAS device from the rest of the network using VLANs or separate subnets. This helps to limit access to the device and prevent unauthorized access from other network devices.
  4. Firewall and Intrusion Detection: Enable the built-in firewall on the NAS device and configure it to allow only necessary network traffic. Consider using an intrusion detection system (IDS) to monitor for any suspicious activity.
  5. Firmware Updates: Regularly update the firmware of the NAS device to ensure that any security vulnerabilities are patched.
  6. Encryption: Enable disk encryption on the NAS device to protect the data stored on the drives. This ensures that even if the physical drives are stolen, the data remains encrypted and inaccessible.
  7. Backup and Disaster Recovery: Implement a regular backup strategy to ensure that critical data is backed up and can be restored in case of theft or data loss. Store backups off-site or in the cloud for added protection.
  8. Disable Unused Services: Disable any unnecessary services or features on the NAS device to reduce the attack surface and potential vulnerabilities.
  9. Monitoring and Logging: Enable system logs and monitor them regularly for any suspicious activities. This can help detect unauthorized access attempts or potential security breaches.
  10. User Education: Educate users about best practices for data security, such as not sharing passwords, avoiding suspicious links or attachments, and being cautious about granting access to the NAS device.

By implementing these practices, you can significantly enhance the security of your NAS device and protect against physical theft or unauthorized access that can lead to data loss.

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

Although NAS VS-4016U-RP 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-4016U-RP 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-4016U-RP Pro has 4 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-4016U-RP 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-4016U-RP Pro, feel free to leave a comment!
  • Shawn Forbes-Robertson
    Shawn Forbes-Robertson 17.09.2023 19:57 #
    Can data recovery from a NAS QNAP VS-4016U-RP Pro device be done if the storage disks are not recognized by the device?
    • Hetman Software
      Hetman Software 17.09.2023 20:00 #

      Yes, data recovery can still be possible even if the storage disks are not recognized by the NAS device. Here are a few steps you can take:

      1. Check the physical connections: Ensure that the disks are properly connected to the NAS device. Try reseating the disks or using different cables.
      2. Check the disk health: If the disks are not recognized, it's possible that there may be a hardware issue with the disks themselves. You can try connecting the disks to a different computer or using a disk diagnostic tool to check their health.
      3. Seek professional help: If the above steps do not work, it is recommended to contact a professional data recovery service. They have the expertise and specialized equipment to recover data from faulty disks or NAS devices.

      It's important to note that attempting data recovery on your own may risk further data loss or damage to the disks, so it's best to consult with a professional in such cases.

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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 benefits of using the NAS QNAP VS-4016U-RP Pro for centralized photo management?

    The key features and benefits of using the NAS QNAP VS-4016U-RP Pro for centralized photo management are:

    1. High storage capacity: The NAS QNAP VS-4016U-RP Pro offers a large storage capacity, allowing you to store a vast collection of photos in one centralized location.
    2. Redundant power supply: The NAS comes with a redundant power supply, ensuring that your photo collection remains accessible even in the event of a power outage or power supply failure.
    3. RAID support: The NAS supports various RAID configurations, including RAID 0, 1, 5, 6, 10, 50, and 60. This ensures data redundancy and protection against drive failures, preventing the loss of your valuable photo collection.
    4. High-performance hardware: The NAS is equipped with a powerful Intel Xeon processor and ample RAM, ensuring smooth and efficient photo management operations.
    5. Easy photo organization: The NAS provides a user-friendly interface and comprehensive photo management tools, allowing you to easily organize and categorize your photos into albums or folders.
    6. Centralized access and sharing: With the NAS, you can access and share your photo collection from anywhere using various devices, including computers, smartphones, and tablets. This makes it convenient to share your photos with friends, family, or clients.
    7. Backup and sync options: The NAS offers multiple backup and synchronization options, allowing you to create backups of your photo collection and synchronize them with other devices or cloud storage services for additional data protection.
    8. Advanced security features: The NAS provides robust security features, including data encryption, IP blocking, and access control, ensuring the privacy and integrity of your photo collection.
    9. Expandable storage capacity: The NAS supports expansion units, allowing you to easily increase the storage capacity as your photo collection grows.
    10. Energy-efficient design: The NAS is designed to be energy-efficient, reducing power consumption and operating costs while minimizing its environmental impact.
  • How does the NAS QNAP VS-4016U-RP Pro facilitate efficient organization, backup, and sharing of photos across multiple devices and users?

    The NAS QNAP VS-4016U-RP Pro facilitates efficient organization, backup, and sharing of photos across multiple devices and users through several features and functionalities:

    1. Centralized Storage: The NAS provides a centralized storage location for all photos, allowing easy access from multiple devices and users. It eliminates the need for scattered storage across different devices or cloud services.
    2. User Access Control: The NAS offers user access control, enabling administrators to assign different permissions and access levels to individual users. This ensures that only authorized users can view, modify, or delete photos, ensuring data security and privacy.
    3. File Organization: The NAS provides various file organization features like folders, tags, and metadata management. Users can create folders and subfolders to categorize photos based on events, dates, or any other criteria. Tags and metadata can be added to photos for quick and easy searching.
    4. Backup and Sync: The NAS supports automatic backup and synchronization of photos from different devices. Users can set up scheduled backups or real-time syncing to ensure that all photos are securely stored and up to date across multiple devices.
    5. Mobile Apps: QNAP offers mobile apps for iOS and Android devices, allowing users to access and manage their photos on the go. These apps provide features like photo uploading, browsing, sharing, and even offline access to photos.
    6. Collaboration and Sharing: The NAS enables easy collaboration and sharing of photos with other users or external parties. Users can share individual photos or entire albums/folders with specific permissions like view-only or edit access. Shared links can be password protected and have expiration dates for enhanced security.
    7. Cloud Integration: The NAS integrates with popular cloud services like Dropbox, Google Drive, or Microsoft OneDrive. This allows users to backup or sync their photos between the NAS and cloud storage, providing an additional layer of data protection and accessibility.

    Overall, the NAS QNAP VS-4016U-RP Pro provides a comprehensive and efficient solution for organizing, backing up, and sharing photos across multiple devices and users, ensuring data security, accessibility, and collaboration.

  • Can the NAS QNAP VS-4016U-RP Pro handle large volumes of photos and provide seamless access and retrieval options?

    Yes, the NAS QNAP VS-4016U-RP Pro is designed to handle large volumes of photos and provide seamless access and retrieval options. It is equipped with a powerful processor, ample storage capacity, and advanced file management features that make it suitable for storing and managing large photo collections. Additionally, it supports various photo management applications and features such as thumbnail generation, photo tagging, and intelligent searching, which enhance the accessibility and retrieval of photos stored on the NAS.

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