NAS Digiever DS-325128-RM Pro+ Data Recovery Simplified: RAID Array Insights

Contents

• 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?
  • Restoring data with Hetman RAID Recovery
  • Safe recovery from disk images
  • Where are user’s files stored?
  • Comparison of software for RAID recovery

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 Digiever 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 Digiever DS-325128-RM Pro+ devices?

User training or education can help in minimizing data loss incidents on NAS Digiever DS-325128-RM Pro+ devices in the following ways:

1. Understanding device functionality: Proper training can help users understand the features and functionality of the NAS device. This knowledge enables users to use the device correctly and avoid accidental data loss.
2. Backup and recovery procedures: Users can be trained on the importance of regular data backups and how to perform them effectively. This ensures that even if data is lost or corrupted, it can be easily recovered from the backup.
3. Security best practices: Education on security best practices can help users understand the importance of strong passwords, enabling encryption, and implementing access controls. This reduces the risk of unauthorized access and potential data breaches.
4. Firmware and software updates: Users can be educated on the importance of keeping the NAS device's firmware and software up to date. Regular updates often include security patches that address vulnerabilities and reduce the risk of data loss.
5. Network and physical security: Training can help users understand the significance of network security measures such as firewalls, antivirus software, and intrusion detection systems. Additionally, users can be educated on physical security practices to prevent unauthorized access or theft of the NAS device.
6. User access management: Users can be trained on how to manage user accounts and access permissions effectively. This ensures that only authorized individuals have access to sensitive data, reducing the risk of accidental or intentional data loss.
7. Incident response and reporting: Users can be educated on how to respond to data loss incidents promptly and report them to the appropriate IT personnel. This helps in taking immediate action to mitigate the impact of the incident and recover the lost data.

By providing comprehensive training and education to users, organizations can significantly minimize data loss incidents on NAS Digiever DS-325128-RM Pro+ devices and ensure the safety and security of their data.

How to take hard disks out of the NAS and connect them to a PC?

Although NAS DS-325128-RM Pro+ 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:

1. 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.

2. 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.

3. Make sure to mark each hard disk in accordance with how they were installed inside the NAS.

4. 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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   How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Digiever DS-325128-RM Pro+. 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.

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How to recover data from a Digiever

DS-325128-RM Pro+ has 32 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:

1. Make sure that you have enough free space to save the image. The image file size usually equals the disk size.

2. Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.

3. 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.

   

4. 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 Digiever DS-325128-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.

Comparison of software for RAID recovery