How to Avoid Data Loss on NAS D-Link DNS-343 and Recover Deleted Files Effectively

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How to Avoid Data Loss on NAS D-Link DNS-343 and Recover Deleted Files Effectively

D-Link DNS-343 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-343.

How to Avoid Data Loss on NAS D-Link DNS-343 and Recover Deleted Files Effectively

RAID Recovery™ 2.6
Recover data from damaged RAID arrays inaccessible from a computer.
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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 data be recovered from a NAS D-Link DNS-343 device after a malfunction or data loss event?

To recover data from a NAS D-Link DNS-343 device after a malfunction or data loss event, you can follow these steps:

  1. Identify the issue: Determine the cause of the malfunction or data loss. It could be due to hardware failure, accidental deletion, or other reasons.
  2. Check the hardware: Ensure that the NAS device is powered on and connected properly. Verify if the hard drives are functioning correctly and not physically damaged.
  3. Use data recovery software: If the issue is related to accidental deletion or logical errors, you can try using data recovery software. Connect the NAS device to a computer and use reliable data recovery software like Recuva, EaseUS Data Recovery Wizard, or TestDisk. These tools can scan the NAS drives and attempt to recover deleted or lost files.
  4. Seek professional help: If the data loss is due to hardware failure or the above methods don't work, it is recommended to contact a professional data recovery service. They have specialized tools and expertise to recover data from faulty NAS devices. However, be prepared for the cost involved in professional data recovery services.
  5. Prevent further data loss: Once you recover the data or decide to seek professional help, it's crucial to prevent further data loss. Avoid using the NAS device until the issue is resolved to prevent overwriting or damaging the existing data. Regularly backup your data to prevent future data loss events.

Remember, data recovery success depends on the extent of the damage and the actions taken after the data loss event. It's always recommended to have a backup strategy in place to minimize the impact of data loss.

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

Although NAS DNS-343 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-343. 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-343 has 4 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 10;
  • 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-343 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

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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-343, feel free to leave a comment!
  • Ike Harling
    Ike Harling 12.09.2023 17:43 #
    Are there any specific backup software recommended for data recovery from NAS D-Link DNS-343 devices?
    • Hetman Software
      Hetman Software 12.09.2023 18:00 #

      There are several backup software options available for data recovery from NAS D-Link DNS-343 devices. Some recommended software options include:

      1. Acronis True Image: Acronis True Image is a popular backup and recovery software that supports NAS devices, including D-Link DNS-343. It provides a comprehensive set of features for data backup, restoration, and disaster recovery.
      2. EaseUS Todo Backup: EaseUS Todo Backup is another reliable software that supports NAS devices. It offers features like scheduled backups, incremental backups, and disk cloning, making it suitable for data recovery from D-Link DNS-343.
      3. NovaBACKUP: NovaBACKUP is a backup software that supports a wide range of NAS devices, including D-Link DNS-343. It provides features like file-level and image-level backups, along with options for encryption and compression.
      4. Synology Hyper Backup: Although primarily designed for Synology NAS devices, Synology Hyper Backup can also be used to backup and recover data from other NAS devices, including D-Link DNS-343. It offers various backup methods and supports data deduplication for efficient storage utilization.

      It's important to note that the compatibility and effectiveness of backup software may vary, so it's recommended to check the specific software requirements and features before making a choice. Additionally, it's advisable to regularly update the firmware of the D-Link DNS-343 device to ensure compatibility and security.

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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 key security features offered by the D-Link DNS-343 NAS device to protect data stored on it?

    The D-Link DNS-343 NAS device offers several key security features to protect data stored on it. Some of these features include:

    1. RAID Protection: The DNS-343 supports multiple RAID configurations (RAID 0, 1, 5, 10, and JBOD) to provide data redundancy and protection against drive failures.
    2. User Authentication: It supports user authentication with password protection. Each user can have their own username and password to access the NAS device and its data.
    3. Access Control Lists (ACL): ACL allows administrators to define specific access permissions for individual users or groups. This helps in controlling who can access and modify the data stored on the NAS device.
    4. Secure Sockets Layer (SSL) Encryption: The DNS-343 supports SSL encryption for secure data transfer over the network. This ensures that data transmitted between the NAS device and connected devices is encrypted and protected from unauthorized access.
    5. FTP/SFTP Support: The device supports FTP and SFTP protocols for secure file transfer. This allows users to securely transfer files to and from the NAS device over the internet.
    6. IP Filtering: The NAS device has IP filtering capabilities, allowing administrators to restrict access to specific IP addresses or IP ranges. This adds an extra layer of security by limiting access to trusted devices only.
    7. Event Logging and Email Alerts: The DNS-343 can generate event logs and send email alerts to administrators in case of any suspicious activity or unauthorized access attempts. This helps in monitoring and identifying potential security threats.
    8. Antivirus Integration: The device can be integrated with compatible antivirus software to scan files stored on the NAS device for malware and viruses.

    It is important to note that while the D-Link DNS-343 offers these security features, it is still essential for users to follow best practices such as regularly updating firmware, using strong passwords, and implementing network-level security measures to ensure the overall security of the NAS device and the data stored on it.

  • How does the D-Link DNS-343 NAS device ensure data confidentiality and prevent unauthorized access to stored files?

    The D-Link DNS-343 NAS device ensures data confidentiality and prevents unauthorized access to stored files through several security measures:

    1. User Authentication: The device requires users to authenticate themselves with a username and password before accessing the files. This ensures that only authorized users can access the data.
    2. Access Control Lists (ACL): The DNS-343 supports ACLs, allowing administrators to define specific permissions for individual users or groups. This enables fine-grained control over who can read, write, or modify files on the NAS.
    3. Secure Socket Layer (SSL)/Transport Layer Security (TLS): The device supports SSL/TLS encryption for secure communication between the NAS and connected devices. This prevents eavesdropping or interception of data during transmission.
    4. Data Encryption: The DNS-343 supports various encryption protocols, such as AES (Advanced Encryption Standard), to encrypt the stored data. This ensures that even if someone gains unauthorized access to the physical NAS device, they cannot read the encrypted data without the encryption key.
    5. Firewall and Network Security: The device has built-in firewall capabilities to protect against unauthorized access from the network. It can also support Virtual Local Area Networks (VLANs) to segregate traffic and enhance network security.
    6. Active Directory Integration: The DNS-343 can integrate with an existing Active Directory (AD) server, allowing administrators to manage user access and permissions centrally. This ensures that only authorized users can access the NAS and its files.
    7. Firmware Updates: D-Link regularly releases firmware updates for their NAS devices, which often include security patches and enhancements. Keeping the device's firmware up to date helps protect against potential vulnerabilities and ensures the latest security features are in place.

    By implementing these security measures, the D-Link DNS-343 NAS device aims to safeguard data confidentiality and prevent unauthorized access to stored files.

  • Can the D-Link DNS-343 NAS device be integrated with encryption technologies to enhance data security? If so, what encryption methods are supported?

    Yes, the D-Link DNS-343 NAS device can be integrated with encryption technologies to enhance data security. It supports several encryption methods, including:

    1. RAID Encryption: The DNS-343 supports RAID 1, RAID 5, RAID 1+0, and RAID 5+Hot Spare configurations. RAID encryption provides protection against data loss by encrypting the data stored on the NAS drives.
    2. Secure Sockets Layer (SSL) Encryption: The DNS-343 supports SSL encryption for secure data transmission over the network. SSL encrypts the data transferred between the NAS device and connected devices, ensuring data integrity and confidentiality.
    3. AES Encryption: The DNS-343 supports AES (Advanced Encryption Standard) encryption. AES is a widely used encryption algorithm that provides strong data security. It encrypts the data stored on the NAS drives, protecting it from unauthorized access.
    4. User-Level Encryption: The DNS-343 allows users to enable encryption on specific folders or shares. This user-level encryption ensures that only authorized users with the encryption key can access the encrypted data.

    By utilizing these encryption methods, the D-Link DNS-343 NAS device can enhance data security and protect sensitive information stored on the device.

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