How to recover data from Netgear ReadyNAS RN3220 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 RN3220

Netgear ReadyNAS RN3220 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 RN3220.

How to recover data from NAS Netgear ReadyNAS RN3220

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.

Can regular data integrity checks help prevent data loss in NAS Netgear ReadyNAS RN3220 devices?

Yes, regular data integrity checks can help prevent data loss in NAS Netgear ReadyNAS RN3220 devices. Data integrity checks involve verifying the accuracy and consistency of data stored on the device. By regularly performing data integrity checks, you can identify and fix any potential issues or corruption in the data before they lead to data loss. This can include checking for file system errors, verifying checksums, and detecting any data inconsistencies. Regular data integrity checks can help ensure the reliability and integrity of your data, reducing the risk of data loss in Netgear ReadyNAS RN3220 devices.

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

Although NAS ReadyNAS RN3220 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 RN3220. 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 RN3220 has 12 HDD slots, and it supports the following array types:

  • RAID 0;
  • X-RAID;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 50;
  • RAID 60;
  • 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 RN3220 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 RN3220, feel free to leave a comment!
  • Lucas Upton
    Lucas Upton 11.09.2023 02:38 #
    What are the steps involved in data recovery from NAS Netgear ReadyNAS RN3220?
    • Hetman Software
      Hetman Software 11.09.2023 03:59 #

      The steps involved in data recovery from a NAS Netgear ReadyNAS RN3220 are as follows:

      1. Identify the issue: Determine the cause of the data loss, such as accidental deletion, hardware failure, or software corruption.
      2. Assess the situation: Evaluate the severity of the data loss and the potential for recovery. Determine if the data loss is due to logical or physical issues.
      3. Safeguard the NAS: Ensure that the NAS is powered off and disconnected from the network to prevent further damage or data loss. Avoid any attempts to recover data directly from the NAS to prevent overwriting or further corruption.
      4. Consult with professionals: If you are not experienced in data recovery, it is recommended to seek professional help from a reputable data recovery service. They have the necessary expertise and tools to handle the recovery process.
      5. Create a backup: Before attempting any recovery, it is essential to create a backup of the current state of the NAS. This backup will serve as a safeguard in case anything goes wrong during the recovery process.
      6. Recovery options: Depending on the nature of the data loss, there are different recovery options available. This could include using data recovery software, rebuilding the RAID array, or repairing the NAS hardware.
      7. Data recovery process: Follow the recommended steps provided by the data recovery service or software. This may involve connecting the NAS drives to a separate computer, running specialized software, or performing manual repairs.
      8. Restore the recovered data: Once the data is successfully recovered, it can be restored to a new NAS or another storage device. Ensure that the recovered data is thoroughly tested for integrity and completeness before using it.
      9. Prevent future data loss: After data recovery, it is crucial to implement measures to prevent future data loss. This may involve regular backups, redundant storage systems, and monitoring for any signs of potential issues.

      Note: It is important to remember that data recovery is a complex process, and success cannot be guaranteed in all cases. It is always recommended to consult with professionals for the best chance of recovering your data.

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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 are the recommended backup strategies for ensuring data protection on a Netgear ReadyNAS RN3220?

    There are several recommended backup strategies for ensuring data protection on a Netgear ReadyNAS RN3220. Here are a few options:

    1. RAID Configuration: The ReadyNAS RN3220 supports various RAID configurations (RAID 0, 1, 5, 6, 10) which provide redundancy and protect against drive failures. Setting up RAID ensures that even if one drive fails, your data remains accessible.
    2. Regular Data Backup: Regularly backing up your data is crucial for data protection. You can use the built-in backup features of the ReadyNAS RN3220 to schedule automatic backups to an external USB drive, another ReadyNAS device, or cloud storage services like Dropbox or Google Drive.
    3. Offsite Backup: Storing backups offsite is essential in case of disasters or physical damage to the primary location. You can replicate data from your ReadyNAS RN3220 to another ReadyNAS device located offsite using the built-in replication feature. Alternatively, you can use cloud backup services that are compatible with the ReadyNAS.
    4. Snapshots: The ReadyNAS RN3220 supports snapshot technology, which allows you to take point-in-time copies of your data. Snapshots provide an additional layer of protection against accidental deletions or modifications. If data gets corrupted or lost, you can easily restore it from a previous snapshot.
    5. Disaster Recovery Plan: It's important to have a comprehensive disaster recovery plan in place. This includes documenting the backup procedures, testing the backups regularly, and ensuring the availability of spare drives or hardware components in case of failures.

    Remember to regularly monitor the health of your drives, keep the firmware up to date, and follow best practices for data security, such as implementing strong passwords and encryption.

  • How does the Netgear ReadyNAS RN3220 facilitate data backup and restore processes?

    The Netgear ReadyNAS RN3220 facilitates data backup and restore processes through several features and functionalities:

    1. RAID Configuration: The RN3220 supports various RAID configurations, including RAID 0, 1, 5, 6, and 10. This allows for data redundancy and protection against drive failures.
    2. Backup Software: The ReadyNAS comes with built-in backup software that allows users to schedule regular backups of their data. This software supports both local and remote backups, providing flexibility and data protection.
    3. Snapshot Technology: The RN3220 includes snapshot technology, which takes point-in-time copies of data. These snapshots can be used for quick and easy data recovery in case of accidental deletion or data corruption.
    4. Replication: The ReadyNAS supports replication, allowing users to create copies of their data on another ReadyNAS device or even on a cloud storage service. This ensures data redundancy and protection against site disasters.
    5. Cloud Integration: The RN3220 offers cloud integration with popular cloud storage providers like Dropbox, Google Drive, and Amazon S3. This allows users to easily backup and restore their data to and from the cloud.
    6. File Versioning: The ReadyNAS keeps track of file versions, allowing users to restore previous versions of files if needed. This is particularly useful in case of accidental modifications or file corruption.
    7. Remote Access: The RN3220 provides remote access capabilities, allowing users to access and restore their data from anywhere using a web browser or mobile app. This is especially useful for remote or mobile workers who need to access their data on the go.

    Overall, the Netgear ReadyNAS RN3220 offers a range of features and functionalities that facilitate data backup and restore processes, ensuring data protection, redundancy, and easy recovery.

  • Can the Netgear ReadyNAS RN3220 be integrated with cloud backup services for additional data redundancy?

    Yes, the Netgear ReadyNAS RN3220 can be integrated with cloud backup services for additional data redundancy. The ReadyNAS supports various cloud backup services such as Amazon S3, Dropbox, Google Drive, and many others. By setting up cloud backup services on the ReadyNAS, you can automatically backup your data to the cloud, providing an extra layer of data redundancy and protection.

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