How to Manage RAID Arrays for NAS Digiever DS-8220-SRM Pro+ Data Recovery

Has your NAS Digiever DS-8220-SRM Pro+ 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?

How to Manage RAID Arrays for NAS Digiever DS-8220-SRM Pro+ Data Recovery
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Digiever DS-8220-SRM Pro+ 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-8220-SRM Pro+. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

How to Manage RAID Arrays for NAS Digiever DS-8220-SRM Pro+ Data Recovery

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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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 elevation of privileges or compromised user accounts lead to data loss or unauthorized access on NAS Digiever DS-8220-SRM Pro+ devices?

Yes, elevation of privileges or compromised user accounts can potentially lead to data loss or unauthorized access on NAS Digiever DS-8220-SRM Pro+ devices. If an attacker gains elevated privileges or compromises a user account with administrative access, they may be able to bypass security measures or manipulate settings on the device, potentially resulting in data loss or unauthorized access to sensitive information stored on the NAS device. It is important to ensure that proper security measures, such as strong passwords, access controls, and regular firmware updates, are in place to mitigate these risks.

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

Although the NAS DS-8220-SRM 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.

    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-8220-SRM 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.

Go to view
How to recover data from a Digiever

How to recover data from a Digiever

DS-8220-SRM Pro+ has 8 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.

    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-8220-SRM 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

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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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-8220-SRM Pro+, feel free to leave a comment!
    Reply
  • Clay Rawlins
    Clay Rawlins 23.08.2023 20:45 #
    Is it possible to recover data from a NAS Digiever DS-8220-SRM Pro+ device that has been affected by a controller card failure or interface problem?
    Reply
    • Hetman Software
      Hetman Software 23.08.2023 22:00 #

      Recovering data from a NAS device that has been affected by a controller card failure or interface problem can be challenging. However, it is possible to recover data in some cases. Here are a few steps you can try:

      1. Check for physical issues: Ensure that all cables are properly connected and there are no loose connections. Sometimes, a loose cable can cause the interface problem.
      2. Replace the controller card: If the controller card has failed, you may need to replace it with a new one. Consult the manufacturer or a professional technician to ensure compatibility and proper installation.
      3. Seek professional help: If the above steps do not 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, keep in mind that professional data recovery services can be expensive.

      Remember to always have a backup of your important data to avoid such situations in the future.

      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

  • How does the NAS Digiever DS-8220-SRM Pro+ function as an email server, and what features does it offer compared to traditional email servers?

    The NAS Digiever DS-8220-SRM Pro+ functions as an email server by providing a platform for hosting and managing email accounts and facilitating the exchange of emails within an organization. It offers several features compared to traditional email servers:

    1. All-in-one Solution: The DS-8220-SRM Pro+ combines the functionality of a Network Attached Storage (NAS) device with an email server. This integration allows for centralized storage and management of email data, reducing the need for separate hardware and simplifying the setup process.
    2. High Scalability: The DS-8220-SRM Pro+ supports a large number of email accounts, making it suitable for small to medium-sized businesses with growing email needs. It offers flexible storage options, allowing for easy expansion of storage capacity as the organization's email requirements increase.
    3. Enhanced Security: This NAS email server provides robust security features to protect sensitive email data. It supports SSL/TLS encryption for secure email communication and implements various authentication methods to prevent unauthorized access. Additionally, it offers anti-spam and anti-virus filters to minimize the risk of malicious emails.
    4. Webmail Interface: The DS-8220-SRM Pro+ includes a web-based interface that allows users to access their emails conveniently from any web browser. This eliminates the need for dedicated email client software and enables users to manage their emails, contacts, and calendars remotely.
    5. Collaboration Tools: The email server supports collaboration features like shared calendars, address books, and task management. These tools facilitate effective communication and coordination among team members, enhancing productivity within the organization.
    6. Backup and Recovery: The DS-8220-SRM Pro+ offers comprehensive backup and recovery options for email data. It allows for scheduled backups to external devices or cloud storage, ensuring data integrity and minimizing the risk of data loss.
    7. Integration with Other Applications: The email server can integrate with other business applications, such as customer relationship management (CRM) software or file-sharing platforms. This integration enables seamless data exchange and enhances workflow efficiency.

    Overall, the NAS Digiever DS-8220-SRM Pro+ provides a feature-rich email server solution that combines storage, security, scalability, and collaboration tools, offering a comprehensive and efficient platform for managing email communication within organizations.

  • What are the advantages and disadvantages of using the NAS Digiever DS-8220-SRM Pro+ as an email server compared to other dedicated email server solutions?

    Advantages of using the NAS Digiever DS-8220-SRM Pro+ as an email server compared to other dedicated email server solutions:

    1. Cost-effective: The NAS Digiever DS-8220-SRM Pro+ is a Network Attached Storage device that can be utilized as an email server. It eliminates the need for purchasing separate hardware for email server purposes, making it a cost-effective solution.
    2. Storage capacity: The DS-8220-SRM Pro+ offers ample storage capacity, allowing you to store a large number of email messages and attachments. This is especially beneficial for businesses that deal with a high volume of email communication.
    3. Data security: The NAS device provides built-in security features such as data encryption, access controls, and RAID configurations. This ensures the safety and confidentiality of your email data.
    4. Centralized management: The DS-8220-SRM Pro+ allows for centralized management of email accounts, making it easier to create, manage, and monitor email addresses for your organization.

    Disadvantages of using the NAS Digiever DS-8220-SRM Pro+ as an email server compared to other dedicated email server solutions:

    1. Limited email-specific features: The DS-8220-SRM Pro+ is primarily designed as a network storage device and may lack some advanced features found in dedicated email server solutions. It may not provide the same level of functionality and customization options as dedicated email servers.
    2. Scalability limitations: Although the DS-8220-SRM Pro+ offers significant storage capacity, it may have limitations when it comes to scaling up to accommodate rapidly growing email requirements. Dedicated email server solutions often provide more flexible scaling options.
    3. Reliability: While the DS-8220-SRM Pro+ is a reliable NAS device, it may not offer the same level of reliability and uptime as dedicated email server solutions. Dedicated servers are specifically designed to handle high email traffic and offer better redundancy and failover mechanisms.
    4. Support and updates: Dedicated email server solutions often come with dedicated support and regular updates to address security vulnerabilities and introduce new features. The DS-8220-SRM Pro+ may not receive the same level of support and updates for email server-specific requirements.

    Overall, using the NAS Digiever DS-8220-SRM Pro+ as an email server can be a viable option for small to medium-sized businesses looking for a cost-effective solution with sufficient storage capacity. However, for organizations with more advanced email server needs, dedicated email server solutions may offer a more comprehensive feature set, scalability, reliability, and support.

  • Can the NAS Digiever DS-8220-SRM Pro+ effectively handle a large number of email accounts and high email traffic, and what are the recommended specifications for optimal performance in this regard?

    The Digiever DS-8220-SRM Pro+ is a Network Attached Storage (NAS) device primarily designed for video surveillance storage and management. While it can handle email accounts and traffic to some extent, it may not be the most optimal solution for handling a large number of email accounts and high email traffic.

    The Digiever DS-8220-SRM Pro+ has the following specifications:

    • Processor: Intel Core i3 3.3GHz dual-core
    • Memory: 4GB DDR3 (expandable up to 16GB)
    • Network: 4 Gigabit Ethernet ports
    • Storage: Supports up to 8 hard drives (up to 64TB total capacity)

    To handle a large number of email accounts and high email traffic, a dedicated email server or email hosting service would be more appropriate. These solutions are specifically designed to handle the complexities and demands of email processing, storage, and delivery.

    If you still want to use the Digiever DS-8220-SRM Pro+ for email purposes, here are some recommendations for optimal performance:

    1. Upgrade the memory: Consider upgrading the memory to the maximum supported capacity (16GB) to ensure smoother operation when handling multiple email accounts and high traffic.
    2. Utilize RAID configuration: Configure the hard drives in a RAID configuration to improve performance, redundancy, and data protection.
    3. Optimize network settings: Ensure that the network settings are optimized for email traffic by prioritizing email traffic and allocating sufficient bandwidth.
    4. Regularly monitor and maintain the system: Keep an eye on system performance, disk usage, and network utilization. Regularly update the firmware and software to benefit from bug fixes and performance improvements.

    It is important to note that the Digiever DS-8220-SRM Pro+ is not specifically designed or optimized for email services. Therefore, it is recommended to consider a dedicated email server solution for optimal performance and reliability.
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