NAS Digiever DBS-4164 Data Recovery: Enhancing Success with RAID Arrays

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS Digiever DBS-4164
• How to Remove Hard Disks from Your NAS and Connect Them to a PC
  • Step-by-Step Data Recovery with Hetman RAID Recovery
  • How to Safely Recover Data from Disk Images
  • Where Are the User’s Files Actually Stored?
  • RAID Recovery Software: Detailed Comparison

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.

How can regular software updates and patches enhance the security and stability of NAS Digiever DBS-4164 devices?

Regular software updates and patches can enhance the security and stability of NAS Digiever DBS-4164 devices in the following ways:

1. Security Fixes: Software updates and patches often include security fixes that address vulnerabilities and weaknesses in the system. By regularly updating the software, you ensure that any known security issues are resolved, reducing the risk of unauthorized access or data breaches.
2. Bug Fixes: Updates and patches also address software bugs and glitches that can impact the stability and performance of the NAS device. By applying these fixes, you can ensure that the device operates smoothly and efficiently, minimizing the chances of system crashes or data corruption.
3. Compatibility: Updates and patches may include compatibility improvements, ensuring that the NAS device remains compatible with the latest operating systems, applications, and hardware. This helps to prevent any compatibility issues that could potentially compromise the security or stability of the device.
4. New Features: Software updates often introduce new features and functionalities that can enhance the overall user experience and productivity. However, it is important to evaluate the impact of these new features on security and stability before implementing them.
5. Vulnerability Management: Regular updates and patches help in managing vulnerabilities by addressing known security weaknesses promptly. This reduces the window of opportunity for attackers to exploit any vulnerabilities in the system.
6. Security Best Practices: Software updates and patches often incorporate security best practices and industry standards. By keeping the NAS device up to date, you ensure that it aligns with the latest security guidelines, making it more resilient against potential threats.

To ensure the security and stability of a NAS Digiever DBS-4164 device, it is crucial to regularly check for software updates and patches provided by the manufacturer. Additionally, it is recommended to follow best practices such as implementing strong passwords, enabling firewalls, and regularly monitoring system logs for any suspicious activities.

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

Although the NAS DBS-4164 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.

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   How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

This program restores data from damaged RAID arrays and is fully compatible with Digiever DBS-4164. 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.

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How to recover data from a Digiever

DBS-4164 has 4 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• RAID 5;
• RAID 6;
• 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.

   

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.

   

Where Are the User’s Files Actually Stored?

The Digiever DBS-4164 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