- Why Regular Data Recovery Tools Can’t Restore Files from RAID
- Key Information About the NAS Digiever DS-8572-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 steps to take after detecting or suspecting data loss on a NAS Digiever DS-8572-SRM Pro+ device?
If you suspect or detect data loss on a NAS Digiever DS-8572-SRM Pro+ device, here are some recommended steps to take:
- Stay calm: It's crucial to remain composed and avoid making any hasty decisions that could potentially worsen the situation.
- Verify the issue: Double-check if the data loss is indeed occurring and confirm the extent of the loss. Ensure that the problem is not due to any temporary network or connectivity issues.
- Isolate the device: If possible, disconnect the NAS device from the network to prevent any further data loss or potential damage.
- Contact support: Reach out to Digiever's technical support team immediately to report the issue. They can provide guidance specific to your device and assist you in troubleshooting or recovering the lost data.
- Follow support instructions: Cooperate with the support team and follow their instructions carefully. They may ask you to provide system logs or perform certain diagnostic steps to identify the cause of the data loss.
- Backup verification: If you have a backup of your data, verify its integrity and ensure it is up to date. If necessary, restore the data from the backup onto the NAS device.
- Professional data recovery: If you don't have a backup or if the data loss is severe, you may need to consider professional data recovery services. Consult with experts who specialize in NAS data recovery to explore your options.
- Take preventive measures: Once the data loss issue is resolved, take steps to prevent future occurrences. Regularly backup your data, implement redundant storage systems, and ensure your NAS device is up to date with the latest firmware and security patches.
Remember, it's always advisable to consult with the manufacturer's support team or seek professional assistance in critical data loss situations.
How to Remove Hard Disks from Your NAS and Connect Them to a PC
Although the NAS DS-8572-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-8572-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-8572-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-8572-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 |
Yes, it is possible to recover data from a NAS Digiever DS-8572-SRM Pro+ device that has been affected by a hardware malfunction or component failure. However, the success of data recovery depends on the extent of the damage and the availability of specialized data recovery services.
In such cases, it is recommended to contact a professional data recovery service provider who specializes in NAS devices. They have the expertise and tools to diagnose the issue, repair or replace the faulty hardware components, and recover the data from the affected device.
It is important to note that attempting to recover data without proper knowledge and experience can potentially worsen the situation and lead to permanent data loss. Therefore, it is advisable to seek professional assistance for data recovery from a malfunctioning NAS device.