- Why Regular Data Recovery Tools Can’t Restore Files from RAID
- Key Information About the NAS Digiever DS-8596-SRM 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 recommended practices for protecting NAS Digiever DS-8596-SRM Pro+ devices against physical theft or unauthorized access that can lead to data loss?
Yes, there are several recommended practices for protecting NAS Digiever DS-8596-SRM Pro+ devices against physical theft or unauthorized access:
- Secure physical location: Place the NAS device in a secure and locked room or cabinet to prevent physical theft.
- Access control: Implement strong password policies and use unique, complex passwords for all user accounts. Enable two-factor authentication (2FA) to add an extra layer of security.
- Regular firmware updates: Keep the NAS device's firmware up to date with the latest security patches and bug fixes to protect against known vulnerabilities.
- Network segmentation: Separate the NAS device from other network devices using VLANs or separate subnets to limit access to authorized users only.
- Firewall protection: Configure a firewall to restrict access to the NAS device from unauthorized networks or IP addresses.
- Disable unnecessary services: Disable any unnecessary services or protocols on the NAS device to reduce potential attack vectors.
- Data encryption: Enable data encryption on the NAS device to protect sensitive information in case of theft or unauthorized access.
- Regular backups: Implement a regular backup strategy to ensure data can be restored in case of data loss or ransomware attacks.
- Physical security measures: Use physical security measures such as surveillance cameras, access control systems, and alarms to protect the physical location of the NAS device.
- Employee training: Educate employees about the importance of data security, password hygiene, and the risks associated with physical theft or unauthorized access.
By following these recommended practices, you can significantly enhance the security of your NAS Digiever DS-8596-SRM Pro+ device and protect against physical theft or unauthorized access that may lead to data loss.
How to Remove Hard Disks from Your NAS and Connect Them to a PC
Although the NAS DS-8596-SRM 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:
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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.
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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.
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Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.
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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.
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Step-by-Step Data Recovery with Hetman RAID Recovery
This program restores data from damaged RAID arrays and is fully compatible with Digiever DS-8596-SRM 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-8596-SRM Pro+ has 8 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:
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Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.
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In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.
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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.
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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-8596-SRM 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 |
If the network interface of a NAS Digiever DS-8596-SRM Pro+ device is not functioning, it may still be possible to recover data from the device. Here are a few potential methods:
It's important to note that attempting data recovery on your own may carry some risks, such as potential data loss or further damage to the device. If the data on the NAS device is critical, it is recommended to consult with a professional data recovery service for the best chance of successful recovery.