How to recover data from Netgear ReadyNAS RN422 NAS

Is your network drive gone, and you are wondering what to do? Has a RAID system crashed, and your files are no longer accessible? Does your device display an error while booting? Have you accidentally rebuilt your RAID system? Are several hard disks out of order?

How to recover data from NAS Netgear ReadyNAS RN422

Netgear ReadyNAS RN422 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from ReadyNAS RN422.

How to recover data from NAS Netgear ReadyNAS RN422

Recover data from damaged RAID arrays inaccessible from a computer.

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 Netgear 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 the use of specific file-sharing protocols impact data loss risks on NAS Netgear ReadyNAS RN422 devices?

The use of specific file-sharing protocols can impact data loss risks on NAS Netgear ReadyNAS RN422 devices in the following ways:

  1. Unsecured Protocols: Certain file-sharing protocols, such as FTP (File Transfer Protocol) or SMB (Server Message Block), may transmit data in an unencrypted format. This exposes the data to potential interception and unauthorized access, increasing the risk of data loss.
  2. Vulnerabilities: Different file-sharing protocols may have varying levels of security vulnerabilities. Outdated or poorly implemented protocols can be exploited by attackers to gain unauthorized access to the NAS device and its data, leading to potential data loss.
  3. Access Control: Some protocols offer more granular control over access permissions and user authentication than others. If a file-sharing protocol lacks robust access control mechanisms, it increases the risk of unauthorized users gaining access to sensitive data and potentially causing data loss.
  4. Compatibility and Interoperability: Certain file-sharing protocols may not be fully compatible or interoperable with the NAS device, leading to data corruption or loss during file transfers. Incompatibilities can result in incomplete or damaged files, increasing the risk of data loss.
  5. Backup and Recovery: The choice of file-sharing protocols may impact the availability and effectiveness of backup and recovery mechanisms. Some protocols may not support efficient backup solutions, making it harder to recover lost data in case of failures or accidents.

To mitigate these risks, it is recommended to:

  • Use secure file-sharing protocols such as SFTP (Secure File Transfer Protocol) or HTTPS (Hypertext Transfer Protocol Secure) that encrypt data during transmission.
  • Keep the NAS firmware and protocols up to date to address any security vulnerabilities.
  • Implement strong access control mechanisms, including user authentication and permission management, to restrict unauthorized access.
  • Regularly backup data using compatible and reliable protocols to ensure data can be recovered in case of loss or failure.
  • Regularly monitor and audit the NAS device for any suspicious activity or unauthorized access attempts.

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

Although NAS ReadyNAS RN422 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 Netgear ReadyNAS RN422. 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 Netgear

How to recover data from a Netgear

ReadyNAS RN422 has 2 HDD slots, and it supports the following array types:

  • RAID 0;
  • X-RAID;
  • RAID 1;
  • JBOD;

NAS supports:

  • Ext2;
  • Ext3;
  • Ext4;
  • Btrfs;

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 Netgear ReadyNAS RN422 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


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 ReadyNAS RN422, feel free to leave a comment!
  • Walter Lovell
    Walter Lovell 11.09.2023 03:58 #
    Can data recovery from a NAS Netgear ReadyNAS RN422 device be performed if there are issues with the network interface card or port?
    • Hetman Software
      Hetman Software 11.09.2023 04:00 #

      Yes, data recovery from a NAS Netgear ReadyNAS RN422 device can still be performed even if there are issues with the network interface card or port. The data recovery process typically involves accessing the hard drives directly rather than relying on the network connection.

      To recover data from a Netgear ReadyNAS RN422, you can remove the hard drives from the NAS device and connect them to a computer using a compatible interface such as SATA or USB. Once connected, you can use data recovery software or services to scan and recover the data from the hard drives.

      It's important to note that if the data loss is due to a hardware failure within the NAS device itself, it is recommended to seek professional data recovery services to avoid further damage or data loss.

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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, 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.


Questions and answers

  • What network protocols are supported by the Netgear ReadyNAS RN422?

    The Netgear ReadyNAS RN422 supports the following network protocols:

    1. TCP/IP (IPv4 and IPv6)
    2. DHCP client or static IP
    3. CIFS/SMB for Windows file sharing
    4. AFP for Mac file sharing
    5. NFS for Linux/Unix file sharing
    6. FTP and SFTP for file transfer
    7. HTTP and HTTPS for web access
    8. SNMP for network monitoring
    9. SSH for secure remote access
    10. iSCSI for block-level storage
    11. Rsync for remote backup
    12. WebDAV for remote file access
    13. Bonjour for easy network discovery (Zeroconf)
    14. UPnP and DLNA for media streaming
    15. VLAN support for network segmentation
    16. Link aggregation (802.3ad) for increased bandwidth and fault tolerance.
  • How does the ReadyNAS RN422 utilize network protocols to enhance data transfer and access?

    The ReadyNAS RN422 utilizes various network protocols to enhance data transfer and access. Some of the key protocols it supports are:

    1. SMB (Server Message Block): This protocol allows the ReadyNAS to share files and folders with Windows-based devices on the network. It ensures seamless file access and transfer between the ReadyNAS and Windows computers.
    2. AFP (Apple Filing Protocol): AFP is used to share files and folders with Apple devices such as Mac computers and iOS devices. It provides efficient and optimized file access for Apple users, ensuring compatibility and smooth data transfer.
    3. NFS (Network File System): NFS is a protocol commonly used in Unix and Linux environments. The ReadyNAS supports NFS to enable file sharing and access with Unix/Linux-based devices. It allows seamless integration with these systems and facilitates fast and efficient data transfer.
    4. FTP (File Transfer Protocol): The ReadyNAS supports FTP, which is a standard protocol for transferring files over the internet. It allows users to access and transfer files remotely using FTP clients, ensuring secure and reliable data transfer.
    5. HTTP/HTTPS: The ReadyNAS also supports HTTP and HTTPS protocols, enabling web-based file access and management. Users can access their files and manage the ReadyNAS using a web browser interface, ensuring easy and convenient data transfer.
    6. iSCSI (Internet Small Computer System Interface): iSCSI is a protocol that allows the ReadyNAS to present its storage as a block-level device to other devices on the network. This enables efficient and direct access to the storage, making it ideal for virtualization and high-performance storage applications.

    By supporting these network protocols, the ReadyNAS RN422 ensures compatibility with various operating systems and devices, enabling seamless data transfer and access across the network.

  • Can the ReadyNAS RN422 support multiple network protocols simultaneously, and if so, what are the advantages of this feature?

    Yes, the ReadyNAS RN422 can support multiple network protocols simultaneously. It supports protocols such as SMB/CIFS, AFP, NFS, FTP, HTTP/S, and iSCSI.

    The advantages of this feature include:

    1. Flexibility: Supporting multiple protocols allows the ReadyNAS to seamlessly integrate into different network environments. It can be accessed by various devices and operating systems, including Windows, Mac, Linux, and mobile devices.
    2. Cross-platform compatibility: Different devices and operating systems often use different network protocols. With support for multiple protocols, the ReadyNAS ensures compatibility and smooth file sharing across different platforms.
    3. Enhanced data sharing: Multiple protocols enable simultaneous access to the same data by different devices and users. This enhances collaboration and productivity in environments where diverse devices and operating systems are present.
    4. Data protection: By supporting various protocols, the ReadyNAS allows for flexible backup and replication options. It can be integrated into existing backup solutions using different protocols, ensuring data redundancy and protection.
    5. Performance optimization: Different protocols have varying performance characteristics. By supporting multiple protocols, the ReadyNAS can deliver optimal performance based on the specific requirements of different devices and applications.

    Overall, the ability to support multiple network protocols simultaneously expands the usability and functionality of the ReadyNAS RN422, making it a versatile and adaptable storage solution.

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