- Why Regular Data Recovery Tools Can’t Restore Files from RAID
- Key Information About the NAS Digiever DS-16364-RM Pro+
- How to Remove Hard Disks from Your NAS and Connect Them to a PC
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 Digiever 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.
Are there any guidelines for configuring security settings on NAS Digiever DS-16364-RM Pro+ devices to prevent unauthorized access and potential data loss?
Yes, there are several guidelines that can help you configure security settings on NAS Digiever DS-16364-RM Pro+ devices to prevent unauthorized access and potential data loss. Here are some key recommendations:
- Change Default Passwords: The first step is to change the default passwords for both the administrator and user accounts. Use strong, unique passwords that are not easily guessable.
- Enable Firewall: Enable the built-in firewall on the NAS device to restrict incoming and outgoing network traffic. Configure the firewall rules to allow only necessary services and block all other unnecessary ports.
- Disable Unused Services: Disable any unused services or protocols on the NAS device to minimize potential attack vectors. Only enable the necessary services required for your specific use case.
- Enable Two-Factor Authentication (2FA): Enable 2FA for all user accounts to add an extra layer of security. This ensures that even if someone obtains the password, they would still need a second factor (e.g., a mobile app or SMS code) to access the NAS.
- Regularly Update Firmware: Keep the NAS firmware up to date with the latest security patches and bug fixes. Regularly check for updates and apply them promptly to protect against known vulnerabilities.
- Implement Access Control: Configure access control lists (ACLs) to restrict access to specific folders or files. Only grant permissions to authorized users or groups, and regularly review and update these access controls.
- Regularly Backup Data: Implement a regular backup strategy to ensure that data is securely backed up and can be restored in case of any data loss or ransomware attack. Store backups on a separate device or off-site location.
- Monitor and Audit: Enable logging and monitoring features on the NAS device to track any suspicious activities or unauthorized access attempts. Regularly review logs and audit trails to identify potential security incidents.
- Physical Security: Ensure that the NAS device is physically secured in a locked room or cabinet to prevent unauthorized access or tampering.
- Educate Users: Train and educate all users on best security practices, such as avoiding suspicious links or attachments, using strong passwords, and being cautious with sharing sensitive information.
It is important to note that these guidelines are general recommendations, and you should consult the official documentation and support resources provided by Digiever for specific instructions and best practices for your NAS model.
How to Remove Hard Disks from Your NAS and Connect Them to a PC
Although the NAS DS-16364-RM Pro+ 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:
-
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.
-
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.
-
Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.
-
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.
Go to view
Step-by-Step Data Recovery with Hetman RAID Recovery
This program restores data from damaged RAID arrays and is fully compatible with Digiever DS-16364-RM Pro+. 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.
How to recover data from a Digiever
DS-16364-RM Pro+ has 16 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;
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:
-
Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.
-
In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.
-
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.
-
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 Digiever DS-16364-RM Pro+ 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
| Product | Operating system | RAID controller support | Supported file systems | Virtual RAID controller support | Data recovery from damaged RAID | File preview |
|---|---|---|---|---|---|---|
| Hetman RAID Recovery | Windows, Linux, MacOS | Yes, over 100 controllers | FAT, exFAT, NTFS, ReFS, APFS, HFS+, Ext4, Ext3, Ext2, ReiserFS, Btrfs, VMFS, Hikvision, XFS, UFS, ZFS | Yes | Yes | Yes |
| DiskInternals RAID Recovery | Windows | Yes, over 10 controllers | FAT, NTFS, Ext2/3/4, HFS+ | No | Yes | Yes |
| R-Studio | Windows, Mac, Linux | Yes, over 20 controllers | FAT, NTFS, Ext2/3/4, HFS+ | Yes | Yes | Yes |
| UFS Explorer RAID Recovery | Windows, Mac, Linux | Yes, over 100 controllers | FAT, NTFS, Ext2/3/4, HFS+ | Yes | Yes | Yes |
| EaseUS Data Recovery | Windows | Yes, over 20 controllers | FAT, NTFS, Ext2/3/4, HFS+ | No | Yes | Yes |
| ReclaiMe Free RAID Recovery | Windows | Yes, over 100 controllers | FAT, NTFS, Ext2/3/4, HFS+ | Yes | Yes | Yes |
Yes, data recovery from a NAS Digiever DS-16364-RM Pro+ device can be performed even if there are issues with the storage drive or media errors. However, the success of data recovery depends on the extent of the issues and the severity of the errors.
If there are minor issues or media errors, data recovery software or tools can be used to recover the data from the NAS device. These tools can often fix minor errors and retrieve the data without much difficulty.
However, if there are major issues with the storage drive or severe media errors, it may require professional data recovery services. These services have specialized tools and expertise to deal with complex data recovery scenarios. They can disassemble the device, repair or replace faulty components, and extract the data from the damaged drive.
It is important to note that data recovery can be a complex and time-consuming process, and there is no guarantee of 100% success. It is always recommended to have regular backups of important data to avoid data loss in such situations.