How to Extract Data from a RAID Disk When NAS Netgear ReadyNAS RN424 Fails to Power On

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS Netgear ReadyNAS RN424
• 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 Netgear 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 Netgear ReadyNAS RN424 devices?

Regular software updates and patches can enhance the security and stability of NAS Netgear ReadyNAS RN424 devices in several ways:

1. Security Vulnerability Fixes: Updates and patches often include fixes for known security vulnerabilities. By regularly updating the software on the ReadyNAS RN424, you ensure that any identified security weaknesses are addressed, minimizing the risk of unauthorized access or data breaches.
2. Bug Fixes and Stability Improvements: Updates and patches also address software bugs and stability issues. These fixes can prevent crashes, improve overall performance, and enhance the reliability of the NAS device.
3. Compatibility with New Technologies: As technology evolves, new standards and protocols may emerge. Regular software updates ensure that your ReadyNAS RN424 remains compatible with the latest technologies, preventing any compatibility issues and potential security vulnerabilities that may arise from using outdated software.
4. New Security Features: Updates and patches may introduce new security features or enhancements to existing ones. These additions can provide additional layers of protection against emerging threats, improving the overall security posture of the NAS device.
5. Firmware Updates: Firmware updates are a crucial part of software updates for NAS devices. These updates address vulnerabilities and improve the functionality of the device's firmware, which is responsible for managing the hardware components and overall system operations.
6. Access to Technical Support: By keeping your ReadyNAS RN424 up to date, you ensure that you have access to technical support from Netgear. If you encounter any issues or have questions regarding the device's security or stability, having the latest software version installed can help in troubleshooting and receiving assistance from the manufacturer.

It is important to regularly check for software updates and patches provided by Netgear and apply them promptly to ensure the security and stability of your ReadyNAS RN424 device.

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

Although the NAS ReadyNAS RN424 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 Netgear ReadyNAS RN424. 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 Netgear

ReadyNAS RN424 has 4 HDD slots, and it supports the following array types:

• RAID 0;
• X-RAID;
• RAID 1;
• RAID 5;
• RAID 6;
• JBOD;

NAS supports:

• Ext2;
• Ext3;
• Ext4;
• Btrfs;

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 Netgear ReadyNAS RN424 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