How to recover data from D-Link DNS-320 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 D-Link DNS-320

D-Link DNS-320 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from DNS-320.

How to recover data from NAS D-Link DNS-320

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 D-Link also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

How can hardware failure lead to data loss in NAS D-Link DNS-320 devices?

Hardware failure in NAS D-Link DNS-320 devices can lead to data loss in several ways:

  1. Disk failure: The most common hardware failure in NAS devices is the failure of hard drives. If one or both of the hard drives in the DNS-320 fail, it can result in data loss. The NAS device may not be able to access the data on the failed drive, and if the data is not backed up elsewhere, it can be permanently lost.
  2. Power supply failure: If the power supply unit (PSU) of the DNS-320 fails, it can cause the NAS device to shut down abruptly. This sudden power loss can lead to data corruption or loss if the device was in the middle of writing or reading data.
  3. Controller failure: The controller in the DNS-320 manages the communication between the hard drives and the rest of the system. If the controller fails, it can prevent the NAS device from accessing the data on the hard drives, resulting in data loss.
  4. Network interface failure: The NAS device relies on its network interface to connect to the network and allow users to access their data remotely. If the network interface fails, it can make the NAS device inaccessible, preventing users from accessing their data.
  5. Firmware or software corruption: Hardware failures can sometimes cause firmware or software corruption in the NAS device. This can result in the device becoming unresponsive or unable to access the data on the hard drives.

To mitigate the risk of data loss due to hardware failure, it is important to regularly back up the data on the NAS device to an external storage device or cloud storage. Additionally, using RAID (Redundant Array of Independent Disks) configurations such as RAID 1 can provide some level of data redundancy by mirroring the data across multiple hard drives.

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

Although NAS DNS-320 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 D-Link DNS-320. 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 D-Link

How to recover data from a D-Link

DNS-320 has 2 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • JBOD;

NAS supports:

  • exFAT, VFAT, FAT 12 / 16 / 32;
  • NTFS / ReFS;
  • APFS / HFS+;
  • Ext2 / 3 / 4 / ReiserFS / XFS / UFS / ZFS / Btrfs;
  • VMFS / HikvisionFS;

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 D-Link DNS-320 network-attached storage keeps OS Linux 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 DNS-320, feel free to leave a comment!
  • Bramwell Hooker
    Bramwell Hooker 12.09.2023 22:47 #
    Is it possible to recover data from a NAS D-Link DNS-320 device that has been physically damaged due to a power surge?
    • Hetman Software
      Hetman Software 12.09.2023 22:59 #

      It is possible to recover data from a physically damaged NAS device, but the success of the recovery depends on the extent of the damage. If the power surge only affected the power supply or other internal components, it may be possible to repair or replace those parts and retrieve the data. However, if the damage is extensive, such as to the hard drives or other critical components, the recovery process may be more challenging or even impossible. It is recommended to contact a professional data recovery service for an assessment of the device and to determine the feasibility of data recovery in your specific case.

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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 capabilities of the D-Link DNS-320 NAS for data backup purposes?

    The D-Link DNS-320 NAS (Network Attached Storage) device offers several key features and capabilities for data backup purposes. Some of the notable ones include:

    1. Storage capacity: The DNS-320 NAS comes with two drive bays, allowing for up to two hard drives to be installed. This provides ample storage capacity for backing up large amounts of data.
    2. RAID support: The device supports RAID 0 and RAID 1 configurations, allowing for data redundancy and increased performance. RAID 0 stripes the data across both drives for improved speed, while RAID 1 mirrors the data on both drives for enhanced data protection.
    3. Automatic backup: The DNS-320 NAS supports scheduled and automatic backups. You can set up regular backup jobs to automatically back up specific files or folders at designated intervals, ensuring that your data is always up to date.
    4. Remote access and file sharing: The device enables remote access to your data, allowing you to access and retrieve your backup files from anywhere with an internet connection. Additionally, you can share files with others securely, making it convenient for collaborative work or sharing files with friends and family.
    5. USB ports and printer sharing: The NAS includes USB ports that can be used to connect external storage devices for additional backup options. It also supports printer sharing, allowing you to connect a printer directly to the NAS and share it across your network.
    6. FTP and cloud backup support: The DNS-320 NAS supports FTP (File Transfer Protocol), enabling you to backup or retrieve files from FTP servers. It also offers integration with popular cloud storage services like Dropbox, making it easy to backup your data to the cloud for added redundancy and disaster recovery.
    7. User-friendly interface: The NAS comes with an intuitive web-based user interface that simplifies the setup and management of backup tasks. It provides easy access to various settings and options, allowing users to customize their backup preferences effortlessly.
    8. Data protection and security: The DNS-320 NAS supports multiple security features, including password protection, encrypted file transfers, and access control lists. These measures help ensure the safety and privacy of your backup data.

    Overall, the D-Link DNS-320 NAS offers a comprehensive set of features and capabilities for data backup purposes, providing users with reliable and flexible backup solutions for their personal or small business needs.

  • How can I set up and configure data backup on the D-Link DNS-320 NAS using different backup methods?

    To set up and configure data backup on the D-Link DNS-320 NAS using different backup methods, you can follow these steps:

    1. Connect the D-Link DNS-320 NAS to your network and access its web interface by entering its IP address in a web browser.
    2. Log in to the web interface using your administrator credentials.
    3. Go to the "Backup" section or tab in the web interface.
    4. Choose the backup method you want to use. The DNS-320 NAS supports various backup methods, including:

    a. Local Backup: This method allows you to back up data from the NAS to an external USB drive connected to the NAS. Select the "Local Backup" option and follow the prompts to configure the backup settings, such as the source folders and destination USB drive.

    b. Remote Backup: This method allows you to back up data from the NAS to another network storage device or NAS. Select the "Remote Backup" option and provide the necessary details, such as the remote NAS IP address, login credentials, and destination folder.

    c. Cloud Backup: This method allows you to back up data from the NAS to a cloud storage service. Select the "Cloud Backup" option and choose the cloud storage provider you want to use. Follow the prompts to configure the necessary settings, such as account credentials and destination folder.

    d. Scheduled Backup: This method allows you to schedule regular backups of specific folders on the NAS. Select the "Scheduled Backup" option and configure the backup schedule, source folders, and destination.

    1. Once you have selected the backup method and configured the necessary settings, click on the "Apply" or "Save" button to save the changes.
    2. The DNS-320 NAS will now start performing the backup according to the configured settings. You can monitor the backup progress and check the backup logs in the web interface.

    Note: The exact steps and options may vary slightly depending on the firmware version of your D-Link DNS-320 NAS. It is recommended to refer to the user manual or online documentation provided by D-Link for detailed instructions specific to your device.

  • What are the best practices for ensuring reliable and efficient data backup on the D-Link DNS-320 NAS, including scheduling, redundancy, and disaster recovery options?

    Here are some best practices for ensuring reliable and efficient data backup on the D-Link DNS-320 NAS:

    1. Implement Regular Backup Schedules: Set up a regular backup schedule to ensure that your data is consistently backed up. This can be done daily, weekly, or monthly, depending on your needs and the frequency of data changes.
    2. Use Redundant Backup Methods: It is recommended to have multiple backup methods in place to ensure redundancy. Consider using a combination of local backups to the NAS, off-site backups, and cloud backups. This way, if one backup method fails, you still have other copies of your data.
    3. Utilize RAID Configuration: The D-Link DNS-320 NAS supports RAID configurations (RAID 0, 1, JBOD). RAID provides data redundancy and improves performance. RAID 1, for example, mirrors data across multiple drives, ensuring that if one drive fails, the data is still accessible from the other drive.
    4. Enable Automatic Backup: Configure the NAS to automatically back up specific folders or files. This ensures that your important data is regularly backed up without manual intervention.
    5. Test Backup Restores: Regularly test the restoration process by restoring files from your backups to ensure they are working correctly. This validates the integrity of your backup data and ensures you can recover your files in case of a disaster.
    6. Monitor Backup Status: Keep an eye on the backup status and logs provided by the NAS. This allows you to identify any issues or failures in the backup process promptly.
    7. Implement Off-Site Backup: Consider having an off-site backup solution in addition to the NAS. This can be achieved by using cloud storage services or physically storing backups in a different location. Off-site backups provide protection against physical damage or theft of the NAS.
    8. Encrypt Backup Data: Enable encryption for your backups to ensure the security of your data. This prevents unauthorized access to your backups, especially if they are stored off-site or in the cloud.
    9. Plan for Disaster Recovery: Have a disaster recovery plan in place to handle unforeseen events like hardware failures, natural disasters, or data corruption. This plan should include steps for data restoration and the necessary hardware or software required for recovery.
    10. Regularly Update Firmware: Keep your NAS firmware up to date to ensure you have the latest security patches and bug fixes. This helps maintain the reliability and efficiency of your backup system.

    Remember, it is essential to tailor these best practices to your specific requirements and regularly review and update your backup strategy as your needs evolve.

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