- 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?
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 Infortrend 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 Infortrend EonStor GS 4024B devices?
The use of specific file-sharing protocols can have an impact on data loss risks on NAS Infortrend EonStor GS 4024B devices in the following ways:
- Security vulnerabilities: Different file-sharing protocols have varying levels of security. Some protocols may have known vulnerabilities that can be exploited by attackers to gain unauthorized access to the NAS device and potentially cause data loss. It is important to choose protocols that have strong security measures in place.
- Encryption: File-sharing protocols that support encryption can help protect data from being intercepted or tampered with during transmission. By using protocols with encryption capabilities, the risk of data loss due to unauthorized access or interception can be reduced.
- Access control: Certain file-sharing protocols provide more robust access control mechanisms than others. Access control ensures that only authorized users have the necessary permissions to access and modify data on the NAS device. Using protocols that offer granular access control options can help mitigate the risk of accidental or malicious data loss.
- Data integrity: Some file-sharing protocols include features that verify the integrity of transferred data. These protocols use checksums or hash functions to ensure that the data received is identical to the data sent. By using protocols that have built-in data integrity checks, the risk of data loss due to corruption or tampering can be minimized.
- Compatibility: Different file-sharing protocols may have varying levels of compatibility with different operating systems and software applications. Incompatibility issues can lead to data loss if files become inaccessible or corrupted during transfer. It is important to choose protocols that are widely supported and compatible with the systems and applications used in the NAS environment.
In summary, the choice of file-sharing protocols can significantly impact the data loss risks on NAS Infortrend EonStor GS 4024B devices. It is crucial to select protocols with strong security measures, encryption capabilities, access control mechanisms, data integrity checks, and compatibility to minimize the risk of data loss.
How to take hard disks out of the NAS and connect them to a PC?
Although NAS EonStor GS 4024B 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:
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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.
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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.
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Make sure to mark each hard disk in accordance with how they were installed inside the NAS.
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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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Restoring data with Hetman RAID Recovery
This program recovers data from damaged RAID arrays and is fully compatible with Infortrend EonStor GS 4024B. 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.
EonStor GS 4024B has 24 HDD slots, and it supports the following array types:
- RAID 0;
- RAID 1;
- RAID 5;
- RAID 6;
- RAID 50;
- RAID 60;
- JBOD;
NAS supports:
- exFAT, VFAT, FAT 12 / 16 / 32;
- NTFS / ReFS;
- APFS / HFS+;
- Ext2 / 3 / 4 / ReiserFS / XFS / UFS / ZFS / Btrfs;
- VMFS / HikvisionFS;
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:
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Make sure that you have enough free space to save the image. The image file size usually equals the disk size.
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Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.
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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.
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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 Infortrend EonStor GS 4024B 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 |
Data recovery from a NAS device like the Infortrend EonStor GS 4024B should not affect the existing data if done correctly. However, it is always recommended to take precautionary measures to minimize the risk of data loss during the recovery process.
Here are a few guidelines to follow:
Remember, data recovery can be a delicate process, so it's essential to choose a reputable data recovery service and follow their guidance to minimize any potential risks.