Expert Insights for RAID Array Data Recovery on NAS Raidon Mobile Rack iR2774 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.

How can a NAS Raidon Mobile Rack iR2774 device's power management settings impact data availability and potential loss?

The power management settings of a NAS Raidon Mobile Rack iR2774 device can have a significant impact on data availability and potential loss. Here are a few ways in which these settings can affect data:

1. Power Failure: If the power management settings are not properly configured, the device may shut down unexpectedly during a power outage. This can lead to data loss or corruption if any ongoing read or write operations are interrupted.
2. Disk Spinning: Power management settings can control how quickly the hard disks spin down when not in use. If the disks spin down too quickly, it can cause delays when accessing data, especially if the disks need to spin up again. This can impact data availability and slow down overall system performance.
3. RAID Rebuilds: In a RAID configuration, if a disk fails and needs to be replaced, the power management settings can affect how quickly the RAID array rebuilds the data onto the new disk. If the settings are too aggressive and cause the disks to spin down frequently, it may prolong the rebuild process, increasing the risk of data loss if another disk fails during this time.
4. Data Integrity: Power management settings can also impact the overall health and integrity of the data stored on the disks. For example, if the settings cause the disks to spin down too frequently, it can increase the wear and tear on the disks, potentially leading to disk failures and data loss.

To mitigate these risks, it is important to configure power management settings appropriately for the specific needs of the NAS device and the data it stores. It is recommended to strike a balance between power savings and data availability, ensuring that the device remains operational during power outages and that the disks are not excessively spun down, especially in critical RAID configurations.

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

Although NAS Mobile Rack iR2774 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 iR2774. 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 iR2774 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 iR2774 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