- 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 Synology 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 user training or education help in minimizing data loss incidents on NAS Synology Diskstation DS108j devices?
User training or education can help in minimizing data loss incidents on NAS Synology Diskstation DS108j devices in the following ways:
- Understanding Backup Strategies: Educating users about the importance of regular backups and implementing a proper backup strategy can significantly reduce the risk of data loss. Users should be trained on how to set up and schedule backups, as well as how to verify the integrity of the backed-up data.
- Security Awareness: Users should be educated about the importance of strong passwords, enabling two-factor authentication, and regularly updating the firmware and software on their NAS devices. This helps in preventing unauthorized access and potential data breaches.
- Data Access Controls: Users should be trained on how to set up appropriate access controls and permissions for different users or groups. This ensures that only authorized individuals have access to specific files or folders, reducing the risk of accidental deletion or modification.
- RAID Configuration and Monitoring: Users should be educated on the different RAID configurations available and how to choose the appropriate one for their needs. Additionally, they should be trained on monitoring the health of their RAID arrays and taking appropriate actions in case of any warnings or failures.
- Regular Maintenance and Updates: Users should be educated on the importance of regular maintenance tasks like disk checks, firmware updates, and system health monitoring. This helps in identifying and resolving any potential issues before they lead to data loss.
- User Error Prevention: Users should be trained on best practices to avoid common user errors that can lead to data loss, such as accidental deletion, overwriting files, or improper file management. This includes techniques like double-checking before deleting, using versioning or file history features, and organizing files properly.
By providing users with the necessary knowledge and skills, organizations can minimize the risk of data loss incidents on NAS Synology Diskstation DS108j devices, ensuring the safety and integrity of their data.
How to take hard disks out of the NAS and connect them to a PC?
Although NAS Diskstation DS108j 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 Synology Diskstation DS108j. 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.
Diskstation DS108j has 1 HDD slots, and it supports the following array types:
- Nie wspiera;
NAS supports:
- EXT3;
- FAT (External Disk Only);
- NTFS (External Disk Read Only);
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 Synology Diskstation DS108j network-attached storage keeps DSM (DiskStation Manager) 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 |