Expert Guidance for RAID Array Data Recovery on NAS Raidon Mobile Rack ST2760-S3 Devices

Contents

• Why can’t ordinary software tools restore files from RAID?
• How to take hard disks out of the NAS and connect them to a PC?
  • Restoring data with Hetman RAID Recovery
  • Safe recovery from disk images
  • Where are user’s files stored?
  • Comparison of software for RAID recovery

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 Raidon also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

Are there any guidelines for configuring security settings on NAS Raidon Mobile Rack ST2760-S3 devices to prevent unauthorized access and potential data loss?

Yes, there are guidelines for configuring security settings on NAS Raidon Mobile Rack ST2760-S3 devices to prevent unauthorized access and potential data loss. Here are some recommendations:

1. Change the default username and password: The first step is to change the default login credentials for the NAS device. Use a strong and unique password that is not easily guessable.
2. Enable firewall and port forwarding: Configure the built-in firewall on the NAS device to restrict access to only necessary ports. If remote access is required, set up port forwarding only for the required ports and disable unnecessary services.
3. Disable unnecessary services: Disable any unnecessary services or protocols on the NAS device to minimize potential attack vectors. Only enable the services that are needed for your specific use case.
4. Regularly update firmware: Keep the NAS device's firmware up to date by regularly checking for and applying any available updates. Firmware updates often include security patches and bug fixes.
5. Use strong network encryption: Enable SSL/TLS encryption for remote access to the NAS device. This ensures that data transmitted over the network is encrypted and secure.
6. Implement strong user access controls: Create separate user accounts with appropriate access privileges for different users or groups. Only grant necessary permissions to each user to minimize the risk of unauthorized access.
7. Enable two-factor authentication (2FA): Implement two-factor authentication for accessing the NAS device. This adds an extra layer of security by requiring a second verification step, such as a code sent to a mobile device, in addition to the username and password.
8. Regularly backup data: Implement a regular backup strategy to ensure that your data is protected in case of any unforeseen events. This can help mitigate the impact of potential data loss.
9. Physically secure the NAS device: Place the NAS device in a secure location to prevent unauthorized physical access. Consider using a lockable cabinet or rack to protect the device from theft.
10. Monitor and log activity: Enable logging and monitoring features on the NAS device to keep track of any suspicious activity. Regularly review the logs to identify any potential security issues or unauthorized access attempts.

It is important to note that these are general guidelines, and the specific steps may vary depending on the NAS device and its configuration options. Always refer to the manufacturer's documentation and security best practices for your specific device.

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

Although NAS Mobile Rack ST2760-S3 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.

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   How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Raidon Mobile Rack ST2760-S3. 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.

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How to recover data from a Raidon

Mobile Rack ST2760-S3 has 2 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• JBOD;

NAS supports:

• APFS / HFS+;
• Ext2 / Ext3 / Ext4;

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 Tools – Save 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.

   

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.

   

Where are user’s files stored?

The Raidon Mobile Rack ST2760-S3 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