Faulty RAID Array Recovery Techniques for NAS Digiever DS-2109 UHD

Has your NAS Digiever DS-2109 UHD 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?

Faulty RAID Array Recovery Techniques for NAS Digiever DS-2109 UHD
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Digiever DS-2109 UHD 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 DS-2109 UHD. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

Faulty RAID Array Recovery Techniques for NAS Digiever DS-2109 UHD

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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 Digiever 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.

Can data be lost during the process of upgrading or updating the NAS Digiever DS-2109 UHD device's firmware?

Yes, there is a possibility of data loss during the process of upgrading or updating the firmware on the Digiever DS-2109 UHD NAS device. It is always recommended to backup your data before performing any firmware updates to minimize the risk of data loss. In case something goes wrong during the update process, having a backup will ensure that your data is safe and can be restored.

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

Although the NAS DS-2109 UHD 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 Digiever DS-2109 UHD. 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 Digiever

How to recover data from a Digiever

DS-2109 UHD 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;

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 Digiever DS-2109 UHD 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.

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 DS-2109 UHD, feel free to leave a comment!
    Reply
  • Dicky Horler
    Dicky Horler 25.08.2023 04:44 #
    Can data recovery from a NAS Digiever DS-2109 UHD device be performed if there are issues with the storage pool or configurations?
    Reply
    • Hetman Software
      Hetman Software 25.08.2023 06:00 #

      Yes, data recovery can be performed on a Digiever DS-2109 UHD device even if there are issues with the storage pool or configurations. However, it is important to note that the success of data recovery depends on the specific issue and the extent of the damage to the device.

      If there are issues with the storage pool or configurations, it is recommended to contact Digiever support or a professional data recovery service for assistance. They can help diagnose the problem and provide guidance on how to recover the data. In some cases, it may be necessary to rebuild the storage pool or restore the configurations before attempting data recovery.

      It is crucial to avoid any further modifications or changes to the device to prevent data loss or overwrite the existing data.

      Reply
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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 features and functionalities of the web interface of the NAS Digiever DS-2109 UHD?

    The web interface of the NAS Digiever DS-2109 UHD offers several key features and functionalities, including:

    1. User-friendly interface: The web interface is designed to be intuitive and easy to navigate, allowing users to access and manage their NAS efficiently.
    2. Centralized storage management: Users can easily configure and manage their storage space, including creating and deleting folders, setting access permissions, and monitoring storage usage.
    3. File sharing and collaboration: The web interface allows users to share files and folders with others, either by generating share links or granting specific access permissions. It also supports collaboration features such as file versioning and comments.
    4. Remote access and mobile support: Users can access their NAS remotely through the web interface, enabling them to manage their files and data from anywhere. The interface is also optimized for mobile devices, ensuring a seamless experience on smartphones and tablets.
    5. Backup and disaster recovery: The NAS Digiever DS-2109 UHD web interface provides comprehensive backup options, including scheduled backups, incremental backups, and offsite replication. Users can easily configure backup tasks and restore files when needed.
    6. Media streaming and transcoding: The web interface supports media streaming, allowing users to access and play their multimedia files directly from the NAS. It also offers transcoding capabilities, converting media files into different formats for smooth playback on various devices.
    7. Surveillance management: The NAS Digiever DS-2109 UHD is equipped with surveillance features, and the web interface provides a dedicated section for managing IP cameras and video recordings. Users can configure camera settings, view live streams, and playback recorded footage.
    8. App ecosystem and customization: The web interface supports a range of apps and add-ons, allowing users to extend the functionality of their NAS. Users can install and manage apps directly from the interface, tailoring their NAS to their specific needs.
    9. System monitoring and notifications: The web interface provides real-time monitoring of system health, including CPU usage, memory usage, and network activity. Users can also set up email notifications for various events, such as storage capacity reaching a threshold or backup tasks completing.
    10. Security and access controls: The web interface offers robust security features, allowing users to set up user accounts and define access permissions. It also supports encryption protocols, firewall settings, and other security measures to protect data stored on the NAS.
  • How user-friendly is the web interface of the NAS Digiever DS-2109 UHD, and what customization options does it offer?

    The web interface of the NAS Digiever DS-2109 UHD is designed to be user-friendly and intuitive. It offers a straightforward navigation system with a well-organized layout, making it easy for users to find and access the various features and settings.

    The web interface provides a range of customization options, allowing users to tailor the NAS to their specific needs. Some of the customization options include:

    1. User and group management: Users can create multiple user accounts and assign specific access permissions to different folders and files.
    2. File/folder management: Users can create, delete, and organize folders to store their files. They can also set access permissions for each folder, controlling who can view, edit, or delete the files.
    3. Network settings: Users can configure network settings, such as IP address, DNS, and port forwarding, to ensure seamless connectivity.
    4. RAID configuration: The NAS supports various RAID levels, and users can customize the RAID configuration based on their storage requirements and data redundancy needs.
    5. System monitoring: The web interface provides real-time monitoring of system resources, including CPU usage, memory usage, and network traffic. Users can customize the monitoring settings and receive alerts for critical events.
    6. Backup and synchronization: Users can set up automatic backup and synchronization tasks to external storage devices or cloud services. They can customize the backup schedules and choose specific files or folders to be included.
    7. Application management: The NAS supports various applications and services, such as media servers, surveillance systems, and cloud services. Users can customize the installation and configuration of these applications according to their preferences.

    Overall, the web interface of the NAS Digiever DS-2109 UHD offers a user-friendly experience with a wide range of customization options to meet the specific needs of users.

  • Can you provide a step-by-step guide on how to access and navigate the web interface of the NAS Digiever DS-2109 UHD for managing storage and accessing files remotely?

    Sure! Here is a step-by-step guide on how to access and navigate the web interface of the NAS Digiever DS-2109 UHD:

    1. Connect your NAS Digiever DS-2109 UHD to your network using an Ethernet cable.
    2. Make sure your computer is also connected to the same network.
    3. Open a web browser on your computer.
    4. In the address bar, type in the IP address of your NAS Digiever DS-2109 UHD. If you don't know the IP address, you can use a network scanning tool to find it.
    5. Press Enter to access the web interface of your NAS.
    6. You should now see the login page of the web interface.
    7. Enter the username and password for your NAS. The default username is "admin" and the default password is "admin". If you have changed the credentials, use the updated ones.
    8. Click on the "Login" button to proceed.
    9. Once logged in, you will be taken to the main dashboard of the web interface.
    10. From here, you can navigate through various tabs and menus to manage your storage and access files remotely.
    11. The main dashboard may include options like "File Browser," "Storage Manager," "User Management," "Network Settings," etc.
    12. To access files remotely, click on the "File Browser" or similar option.
    13. In the file browser, you can browse through the files and folders on your NAS, upload or download files, create new folders, and perform other file management tasks.
    14. To manage storage, click on the "Storage Manager" or similar option.
    15. In the storage manager, you can create or delete storage volumes, configure RAID settings, monitor disk health, and perform other storage-related tasks.
    16. Similarly, you can explore other tabs and menus to access various features and settings of your NAS Digiever DS-2109 UHD.

    Remember to refer to the user manual or documentation provided by Digiever for detailed instructions specific to your NAS model.
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