NAS Digiever DS-323128-RM Pro+ Data Recovery: Pro Tips for RAID Array Restoration

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS Digiever DS-323128-RM Pro+
• 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 the number of concurrent users or clients accessing a NAS Digiever DS-323128-RM Pro+ device affect data loss risks?

The number of concurrent users or clients accessing a NAS (Network Attached Storage) device like the Digiever DS-323128-RM Pro+ can affect data loss risks in several ways:

1. Increased Network Traffic: With more concurrent users accessing the NAS device, there will be an increase in network traffic. This increased load on the network can lead to slower data transfer speeds and potential data loss if the network becomes overwhelmed or experiences bottlenecks.
2. Higher Risk of Accidental Deletions or Modifications: As the number of users accessing the NAS simultaneously increases, the chances of accidental deletions or modifications to files also rise. Multiple users making changes to the same files simultaneously can result in conflicts and data loss if changes are not properly synchronized or if files are accidentally overwritten.
3. Increased Vulnerability to Malicious Activities: More concurrent users mean a larger attack surface for potential security breaches. If proper security measures are not in place, such as strong user authentication, access controls, and encryption, the risk of unauthorized access, data breaches, or data loss due to malware or hacking attempts can increase significantly.
4. Performance Impact: The number of concurrent users can impact the overall performance of the NAS device. If the device is not capable of handling a high number of simultaneous connections, it may become overloaded, leading to slower response times, increased latency, and potential data loss if the system becomes unresponsive or crashes.

To mitigate these risks and ensure data integrity on a NAS device with multiple concurrent users, it is important to:

• Implement robust user authentication and access controls to prevent unauthorized access.
• Regularly backup data to an off-site location or another NAS device to protect against accidental deletions, modifications, or hardware failures.
• Monitor and optimize network performance to handle the increased load efficiently.
• Implement redundancy and fault-tolerant configurations, such as RAID (Redundant Array of Independent Disks), to protect against hardware failures and data loss.
• Regularly update the NAS firmware and security patches to address any vulnerabilities and ensure the latest security measures are in place.
• Educate users about best practices for data management, including file versioning, avoiding simultaneous editing, and proper backup procedures.

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

Although the NAS DS-323128-RM Pro+ 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 DS-323128-RM Pro+. 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

DS-323128-RM Pro+ has 32 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• RAID 5;
• RAID 6;
• RAID 50;
• RAID 60;
• 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 DS-323128-RM Pro+ 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