RAID Array Recovery on NAS QNAP TVS-EC1680U-SAS-RP: Steps to Recover Data After It Breaks

Has your NAS QNAP TVS-EC1680U-SAS-RP suddenly lost its network drive and you’re unsure what to do next? Did the RAID array collapse, making your files inaccessible? Is the device throwing errors during startup? Perhaps you accidentally rebuilt the RAID array or several hard drives failed at the same time?

RAID Array Recovery on NAS QNAP TVS-EC1680U-SAS-RP: Steps to Recover Data After It Breaks

QNAP TVS-EC1680U-SAS-RP NAS Data Recovery in 2025

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from an TVS-EC1680U-SAS-RP. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

RAID Array Recovery on NAS QNAP TVS-EC1680U-SAS-RP: Steps to Recover Data After It Breaks

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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Why Regular Data Recovery Tools Can’t Restore Files from RAID

Conventional hard drives store user data by writing it sequentially across the disk surface, which means an entire file is typically located on a single drive. In contrast, when data is written to a RAID array, each file is split into multiple fragments. These fragments are then distributed and written in sequence across all the drives in the array. Depending on the configuration, fragment sizes can range from 2 KB to 2 MB, so every file is physically stored across several disks at once.

This approach significantly increases read and write performance — after all, writing two halves of a 1 GB file to two drives simultaneously is much faster than writing the full 1 GB to a single disk. However, this same mechanism makes file recovery far more complex.

Different RAID levels use different methods to distribute and protect data. On top of that, manufacturers like QNAP often add their own proprietary structures and variations. As a result, data can be written to disks in many different formats, and each requires a specific approach during recovery.

How frequently should data be backed up to prevent loss on NAS QNAP TVS-EC1680U-SAS-RP devices?

To prevent data loss on NAS QNAP TVS-EC1680U-SAS-RP devices, it is recommended to back up the data frequently. The frequency of backups depends on the importance of the data and the rate of change in the files.

For critical data that is frequently updated, a daily backup schedule is advisable. This ensures that any changes made to the data throughout the day are backed up regularly, minimizing the risk of data loss.

For less critical data or data that doesn't change frequently, a weekly or monthly backup schedule may be sufficient. However, it's important to consider the potential impact of losing any data and make a decision based on the specific needs and requirements of your organization.

Additionally, it is recommended to follow the 3-2-1 backup strategy, which involves having at least three copies of your data, stored on two different types of media, with one copy stored off-site or in the cloud. This strategy provides an extra layer of protection against data loss.

Ultimately, the frequency of backups should be determined by the specific needs and risk tolerance of your organization, but regular and consistent backups are essential to prevent data loss on NAS devices.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS TVS-EC1680U-SAS-RP can be accessed over the network, you still need to remove its hard disks and connect them directly to a Windows PC. Only then can the recovery software properly scan and analyze the drives. Follow these steps:

  1. Power off the NAS and disconnect it from the power source.

    WARNING! Before removing any drives, carefully read the device manual. Improper actions may damage both the NAS enclosure and the hard disks in the RAID array.

  2. Remove the hard disks one by one, gently sliding each drive out of its slot. Remember that hard disks are highly sensitive: any impact or drop can cause serious physical damage.

  3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

  4. Connect the drives to your computer. In this video, we explain which ports you can use to connect hard disks and what to do if your PC does not have enough free connectors.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

Hetman Raid Recovery

This program restores data from damaged RAID arrays and is fully compatible with QNAP TVS-EC1680U-SAS-RP. Each hard disk in the array contains technical metadata describing how files were written. When launched, Hetman RAID Recovery analyzes this metadata, automatically reconstructs the damaged array, and provides access to its contents. After that, you can browse the recovered disk and save your files. The program can also restore files that were accidentally deleted from the network drive.

Go to view
How to recover data from a QNAP

How to recover data from a QNAP

TVS-EC1680U-SAS-RP has 16 HDD slots, and it supports the following array types:

  • RAID 50;
  • RAID 60;
  • 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);

How to Safely Recover Data from Disk Images

This utility allows you to create a complete copy of a disk and work with the disk image instead of the physical drive. This approach helps protect your data from:

  • Overwriting during the recovery process;
  • Additional data loss caused by bad sectors;
  • User errors.

To create a disk image, follow these steps:

  1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

  2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

  3. When the Image Creation Wizard opens, select whether you want to save the entire disk or only a specific region. Adjust the settings and click Next.

    Hetman RAID Recovery: Image Creation Wizard
  4. Choose the directory where the image will be saved. You may select any available disk connected to your PC or upload the image via FTP.

    Hetman RAID Recovery: Choose a disk or save the image via FTP

Where Are the User’s Files Actually Stored?

The QNAP TVS-EC1680U-SAS-RP 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.

RAID Recovery Software: Detailed Comparison

Product Operating system RAID controller support Supported file systems Virtual RAID controller support Data recovery from damaged RAID File preview
Hetman RAID Recovery Windows, Linux, MacOS Yes, over 100 controllers FAT, exFAT, NTFS, ReFS, APFS, HFS+, Ext4, Ext3, Ext2, ReiserFS, Btrfs, VMFS, Hikvision, XFS, UFS, ZFS Yes Yes Yes
DiskInternals RAID Recovery Windows Yes, over 10 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
R-Studio Windows, Mac, Linux Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
UFS Explorer RAID Recovery Windows, Mac, Linux Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
EaseUS Data Recovery Windows Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
ReclaiMe Free RAID Recovery Windows Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes

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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 TVS-EC1680U-SAS-RP, feel free to leave a comment!
  • Mac Greenup
    Mac Greenup 15.09.2023 04:38 #
    Is it possible to recover data from a NAS QNAP TVS-EC1680U-SAS-RP device that has been affected by a power supply or voltage fluctuation issue?
    • Hetman Software
      Hetman Software 15.09.2023 05:59 #

      Yes, it is possible to recover data from a NAS QNAP TVS-EC1680U-SAS-RP device that has been affected by a power supply or voltage fluctuation issue. However, the success of data recovery depends on the extent of the damage caused by the power supply issue.

      Here are a few steps you can take to attempt data recovery:

      1. Power off the NAS: If you haven't already done so, power off the NAS immediately to prevent further damage.
      2. Check the power supply: Ensure that the power supply is functioning properly and providing the correct voltage. If necessary, replace the power supply with a new one.
      3. Check the hard drives: Power off the NAS and remove the hard drives. Inspect them for any physical damage such as burnt components or melted connectors. If you find any damage, consult a professional data recovery service.
      4. Test the hard drives: Connect the hard drives to a different computer using a SATA to USB adapter or an external hard drive enclosure. Check if the drives are recognized by the computer. If they are recognized, attempt to access the data on the drives.
      5. Consult professional data recovery services: If you are unable to access the data on the hard drives or if the drives are not recognized by the computer, it is recommended to consult professional data recovery services. They have specialized tools and expertise to recover data from damaged NAS devices.

      Remember to always have a backup of your important data to avoid data loss in case of such incidents.

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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 different file access levels available on the QNAP TVS-EC1680U-SAS-RP NAS system?

    The QNAP TVS-EC1680U-SAS-RP NAS system provides several file access levels, including:

    1. Local access: Users can access files and folders directly on the NAS system using a connected computer or device within the local network.
    2. Remote access: Users can access files and folders on the NAS system from outside the local network using various remote access methods such as FTP, SFTP, WebDAV, or QNAP's proprietary myQNAPcloud service.
    3. User-based access control: The NAS system supports user accounts and allows administrators to assign different access permissions to each user. This ensures that users only have access to the files and folders they are authorized to access.
    4. Group-based access control: Users can be organized into groups, and access permissions can be assigned to entire groups instead of individual users. This simplifies the management of access control, especially in larger environments with numerous users.
    5. Shared folder access control: Administrators can set specific access permissions for shared folders on the NAS system. This allows fine-grained control over who can read, write, or modify files within each shared folder.
    6. Access control based on IP address: The NAS system can restrict access to specific IP addresses or IP ranges. This provides an additional layer of security by allowing only authorized devices or networks to access the files and folders on the NAS.
    7. Access control based on protocols: Administrators can enable or disable specific file access protocols (e.g., SMB/CIFS, AFP, NFS) to control which protocols are allowed for accessing the NAS system.

    Overall, the QNAP TVS-EC1680U-SAS-RP NAS system offers a comprehensive range of file access levels to ensure secure and controlled access to files and folders stored on the system.

  • How can I configure and manage file access levels on the QNAP TVS-EC1680U-SAS-RP NAS?

    To configure and manage file access levels on the QNAP TVS-EC1680U-SAS-RP NAS, you can follow these steps:

    1. Access the NAS web interface: Open a web browser and enter the IP address of your NAS in the address bar. Login with your admin credentials.
    2. Create user accounts: Go to "Control Panel" > "User" > "User Home" and click on "Create" to add user accounts. Provide a username, password, and assign appropriate access privileges.
    3. Create user groups: Go to "Control Panel" > "User" > "User Group" and click on "Create" to add user groups. Specify a group name and assign users to the group.
    4. Configure shared folders: Go to "Control Panel" > "Shared Folders" and click on "Create" to add shared folders. Provide a folder name, select the desired volume, and set access privileges for individual users or groups.
    5. Set access privileges: In the "Shared Folders" section, select a shared folder and click on the "Privilege Settings" tab. Here, you can define access privileges for different users and groups, such as read-only, read/write, or deny access.
    6. Enable advanced folder permissions: In the "Shared Folders" section, select a shared folder and click on the "Advanced Permissions" tab. Here, you can set advanced folder permissions, including ACL (Access Control List) settings for fine-grained control over access levels.
    7. Enable Windows ACL support: If you want to use Windows ACL permissions, go to "Control Panel" > "Shared Folders" > "Advanced Permissions" > "Enable Windows ACL." This allows you to manage access permissions using Windows-style ACLs.
    8. Set up quota limits: To manage storage usage, you can set quota limits for individual users or groups. Go to "Control Panel" > "Shared Folders" > "Quota" to configure quota settings.
    9. Apply changes: After configuring access levels, click on "Apply" or "Save" to save the settings.

    By following these steps, you can configure and manage file access levels on your QNAP TVS-EC1680U-SAS-RP NAS according to your specific requirements.

  • What are the security implications and best practices for setting file access levels on the QNAP TVS-EC1680U-SAS-RP NAS?

    Setting file access levels on the QNAP TVS-EC1680U-SAS-RP NAS is crucial for maintaining the security and integrity of your data. Here are some security implications and best practices to consider:

    1. Principle of Least Privilege: Follow the principle of least privilege, granting users and applications only the minimum level of access required to perform their tasks. This helps minimize the potential damage caused by compromised accounts.
    2. User Access Control: Create separate user accounts for each individual accessing the NAS, ensuring that each user has a unique username and password. Avoid using default or common credentials.
    3. Group Permissions: Organize users into groups based on their roles and responsibilities. Assign appropriate group permissions to ensure efficient management of file access rights.
    4. Folder-Level Permissions: Set access permissions at the folder level to control who can read, write, or execute files within specific directories. Regularly review and update these permissions as needed.
    5. Network Access Control: Utilize firewall settings to restrict access to the NAS from specific IP addresses or networks. This prevents unauthorized access attempts from external sources.
    6. Two-Factor Authentication (2FA): Enable 2FA for user authentication to add an extra layer of security. This requires users to provide a second form of verification, such as a one-time password or biometric authentication, in addition to their regular credentials.
    7. Regular Firmware Updates: Keep the NAS firmware up to date to ensure that security patches and enhancements are applied promptly. Regularly check for firmware updates provided by QNAP and apply them as recommended.
    8. Data Encryption: Enable encryption for sensitive data stored on the NAS. QNAP provides options for both shared folder encryption and full disk encryption. This protects your data in case of physical theft or unauthorized access.
    9. Regular Backups: Implement a regular backup strategy to protect your data from accidental deletion, hardware failures, or ransomware attacks. Store backups on separate media or off-site to ensure data availability in case of a disaster.
    10. Audit Logs and Monitoring: Enable and regularly review audit logs to track user activities and identify any suspicious behavior. Implement monitoring tools to detect and alert on any unusual access patterns or security incidents.
    11. Disable Unused Services: Disable any unnecessary services or features on the NAS to reduce the attack surface. Only enable the services that are required for your specific needs.
    12. Secure Remote Access: If remote access is required, use secure protocols such as VPN (Virtual Private Network) or SSH (Secure Shell) to establish a secure connection. Avoid exposing the NAS directly to the internet without proper security measures in place.

    By following these best practices, you can enhance the security of your QNAP TVS-EC1680U-SAS-RP NAS and protect your data from unauthorized access or breaches.