How to Avoid Data Loss on NAS Thecus N4910U-S/R and Recover Deleted Files Expertly

Ensure ⭐ NAS data integrity with RAID configurations and backup routines to recover deleted files and prevent loss.

How to Avoid Data Loss on NAS Thecus N4910U-S/R and Recover Deleted Files Expertly

Thecus N4910U-S/R NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from N4910U-S/R.

How to Avoid Data Loss on NAS Thecus N4910U-S/R and Recover Deleted Files Expertly

RAID Recovery™ 2.6
Recover data from damaged RAID arrays inaccessible from a computer.
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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 Thecus also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

Can malware or ransomware attacks lead to data loss in NAS Thecus N4910U-S/R devices?

Yes, malware or ransomware attacks can potentially lead to data loss in NAS Thecus N4910U-S/R devices. Malware can infect the NAS device and corrupt or delete data, while ransomware can encrypt the data and demand a ransom for its release. It is important to take preventive measures such as regularly updating the firmware, using strong passwords, enabling firewall protection, and implementing regular backups to minimize the risk of data loss. Additionally, having a robust security solution in place can help detect and mitigate potential malware or ransomware attacks.

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

Although NAS N4910U-S/R 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.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

Hetman Raid Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Thecus N4910U-S/R. 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 Thecus

How to recover data from a Thecus

N4910U-S/R has 4 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 10;
  • JBOD;

NAS supports:

  • EXT3;
  • EXT4;
  • XFS;

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 ToolsSave 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.

    Hetman Raid Recovery: Image Creation Wizard
  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.

    Hetman Raid Recovery: hoose any disk connected to this PC, or save the image by FTP

Where are user’s files stored?

The Thecus N4910U-S/R 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

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

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Comments (3)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 9.08.2022 12:31 #
    If you want to ask a question about data recovery, from NAS N4910U-S/R, feel free to leave a comment!
  • Kurt McNair-Wilson
    Kurt McNair-Wilson 13.09.2023 04:46 #
    Can data recovery from a NAS Thecus N4910U-S/R device be done if the device is showing signs of disk or storage media errors?
    • Hetman Software
      Hetman Software 13.09.2023 04:59 #

      Yes, data recovery from a NAS Thecus N4910U-S/R device can be done even if the device is showing signs of disk or storage media errors. However, the success of the recovery depends on the severity of the errors and the extent of the damage to the disks or storage media.

      In case of disk or storage media errors, it is recommended to stop using the device immediately to prevent further damage. Then, you can contact a professional data recovery service provider who specializes in NAS devices to assess the situation and attempt data recovery.

      These experts have the necessary tools and expertise to handle disk errors, repair damaged disks, and recover data from the NAS device. However, it is important to note that data recovery can be a complex and time-consuming process, and there is no guarantee of 100% success.

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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

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Questions and answers

  • What are the key features and capabilities of the Thecus N4910U-S/R NAS for data backup?

    The Thecus N4910U-S/R NAS offers several key features and capabilities for data backup:

    1. High Performance: The NAS is powered by an Intel Skylake Xeon processor and supports up to 64GB of DDR4 ECC RAM, ensuring fast and efficient data backup.
    2. Storage Capacity: It supports up to four 3.5-inch SATA hard drives, allowing for a large storage capacity for data backup.
    3. RAID Support: The NAS supports various RAID levels (RAID 0, 1, 5, 6, 10, 50, 60, JBOD) for data redundancy and protection against drive failures.
    4. Data Protection: It offers data protection features like snapshot technology, which allows users to take point-in-time snapshots of their data for easy recovery in case of accidental deletion or corruption.
    5. Backup Options: The NAS supports multiple backup options, including local backup to external USB drives or other NAS devices, remote backup to another location over the network, and cloud backup to popular cloud storage services.
    6. Data Synchronization: It supports real-time or scheduled data synchronization between multiple NAS devices, ensuring data consistency across different locations.
    7. Data Encryption: The NAS provides hardware-accelerated AES-NI encryption to secure data during transmission and storage, protecting it from unauthorized access.
    8. Disaster Recovery: It offers disaster recovery features like iSCSI failover and high availability, ensuring continuous access to data even in the event of hardware failures or network disruptions.
    9. Data Deduplication and Compression: The NAS supports data deduplication and compression techniques to optimize storage space and reduce backup times.
    10. User-Friendly Interface: The NAS comes with an intuitive web-based interface that makes it easy to set up and manage data backup tasks.

    Overall, the Thecus N4910U-S/R NAS provides a robust and feature-rich solution for data backup, offering high performance, data protection, and various backup options to meet the needs of businesses and individuals.

  • How does the Thecus N4910U-S/R NAS ensure data integrity and reliability during the backup process?

    The Thecus N4910U-S/R NAS ensures data integrity and reliability during the backup process through several mechanisms:

    1. RAID Support: The NAS supports various RAID levels, including RAID 0, 1, 5, 6, 10, and JBOD. RAID provides data redundancy by distributing data across multiple drives and allows for recovery in case of a drive failure.
    2. Snapshot Technology: The NAS utilizes snapshot technology to create a point-in-time copy of data. This ensures that even if the original data is modified or deleted during the backup process, a consistent and reliable copy is maintained.
    3. Data Scrubbing: The NAS performs regular data scrubbing to identify and correct any errors or inconsistencies in the stored data. This helps maintain data integrity and reliability over time.
    4. Data Deduplication and Compression: The NAS can reduce the storage footprint by deduplicating and compressing data during the backup process. This not only saves storage space but also ensures that only unique data is stored, reducing the chances of data corruption.
    5. Multiple Backup Options: The Thecus N4910U-S/R NAS supports various backup options, such as local backups, remote replication, and cloud backup integration. Having multiple backup options ensures that data is protected and available even in case of hardware failures or disasters.
    6. Error Checking and Self-Healing: The NAS performs regular error checking and self-healing mechanisms to identify and correct any data errors or inconsistencies. This helps maintain data integrity and reliability by proactively identifying and resolving issues.

    Overall, the Thecus N4910U-S/R NAS employs a combination of RAID technology, snapshot technology, data scrubbing, deduplication, compression, multiple backup options, and error checking to ensure data integrity and reliability during the backup process.

  • Can the Thecus N4910U-S/R NAS be integrated with existing backup software and systems for seamless data backup operations?

    Yes, the Thecus N4910U-S/R NAS can be integrated with existing backup software and systems for seamless data backup operations. It supports various backup protocols and features, such as Rsync, Time Machine, and iSCSI Thin Provisioning, which allow it to easily integrate with different backup software and systems. Additionally, it supports Windows Backup, Acronis True Image, and other third-party backup software, making it compatible with a wide range of backup solutions.

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