How to Retrieve Lost Data from Faulty RAID Arrays in NAS Huawei OceanStor Dorado 8000 V6

Recovering a faulty RAID array from ⭐ NAS drives made simple with our detailed recovery methods.

How to Retrieve Lost Data from Faulty RAID Arrays in NAS Huawei OceanStor Dorado 8000 V6

Huawei OceanStor Dorado 8000 V6 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from OceanStor Dorado 8000 V6.

How to Retrieve Lost Data from Faulty RAID Arrays in NAS Huawei OceanStor Dorado 8000 V6

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 Huawei also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

Are there any specific precautions to take while migrating data between NAS Huawei OceanStor Dorado 8000 V6 devices?

Yes, there are some precautions to consider while migrating data between Huawei OceanStor Dorado 8000 V6 devices. Here are a few:

  1. Backup: Before starting the migration process, it is important to take a complete backup of the data on the source NAS device. This ensures that in case of any data loss or corruption during migration, you can restore the data from the backup.
  2. Verify compatibility: Ensure that the source and destination NAS devices are compatible in terms of hardware, firmware, and software versions. Check the compatibility matrix provided by Huawei to ensure a smooth migration process.
  3. Plan the migration: Develop a detailed migration plan that includes the migration timeline, resource allocation, and any potential risks or challenges. This will help in executing the migration process smoothly and efficiently.
  4. Network bandwidth: Consider the network bandwidth available between the source and destination NAS devices. If the data volume is large, it is recommended to have a high-speed network connection to minimize the migration time.
  5. Validate data integrity: Before starting the migration, verify the integrity of the data on the source NAS device. Run integrity checks or data validation processes to ensure that the data is complete and error-free.
  6. Test migration process: Perform a test migration on a small subset of data to validate the migration process and identify any potential issues or errors. This will help in fine-tuning the migration plan and reduce the risk of data loss or disruption.
  7. Monitor the migration: During the migration process, closely monitor the progress and performance of the migration. Keep track of any error messages or warnings and take appropriate actions if required.
  8. Post-migration validation: Once the migration is complete, validate the data on the destination NAS device to ensure that it matches the source data. Perform data integrity checks and test the accessibility of the migrated data.

It is recommended to consult the official documentation, user manuals, and support resources provided by Huawei for detailed instructions and best practices specific to your NAS device model and firmware version.

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

Although NAS OceanStor Dorado 8000 V6 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

    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 Huawei OceanStor Dorado 8000 V6. 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.

Go to view
How to recover data from a Huawei

How to recover data from a Huawei

OceanStor Dorado 8000 V6 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 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 Huawei OceanStor Dorado 8000 V6 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 OceanStor Dorado 8000 V6, feel free to leave a comment!
  • Kelsey Smith
    Kelsey Smith 26.08.2023 03:43 #
    Is it possible to recover data from a NAS Huawei OceanStor Dorado 8000 V6 device if the device is experiencing firmware update or installation problems?
    • Hetman Software
      Hetman Software 26.08.2023 04:59 #

      It is possible to recover data from a NAS Huawei OceanStor Dorado 8000 V6 device even if it is experiencing firmware update or installation problems. However, the process may vary depending on the specific issue and the severity of the problem.

      If the firmware update or installation process is interrupted or fails, it could potentially cause data corruption or loss. In such cases, it is recommended to contact Huawei technical support for assistance. They can provide guidance on troubleshooting the issue and recovering the data.

      In some cases, it may be necessary to perform a firmware recovery or reinstallation process to fix the problem. This process typically involves booting the device from a recovery image or using specialized tools provided by Huawei. It is important to follow the instructions provided by Huawei or seek professional assistance to avoid further data loss.

      Additionally, it is always recommended to have regular backups of important data to mitigate the risk of data loss in case of any unforeseen issues with the device.

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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

  • How does the NAS Huawei OceanStor Dorado 8000 V6 facilitate centralized photo management for businesses or organizations?

    The NAS Huawei OceanStor Dorado 8000 V6 provides several features and capabilities that facilitate centralized photo management for businesses or organizations. Here are some ways it enables centralized photo management:

    1. High Storage Capacity: The OceanStor Dorado 8000 V6 offers high storage capacity, allowing businesses or organizations to store a large number of photos in a central location. This eliminates the need for multiple storage devices and ensures all photos are easily accessible from a single platform.
    2. Scalability: The NAS system is highly scalable, enabling businesses or organizations to expand their storage capacity as their photo collection grows. It supports the addition of more drives or expansion enclosures, allowing for seamless scalability without disrupting existing operations.
    3. High Performance: The OceanStor Dorado 8000 V6 delivers high-performance storage capabilities, ensuring quick and efficient access to photos. It utilizes advanced technologies like solid-state drives (SSDs), intelligent caching, and data tiering to optimize performance and reduce latency, providing fast retrieval of photos even in high-demand scenarios.
    4. Data Protection: The NAS system incorporates various data protection mechanisms to safeguard photos against loss or corruption. It supports RAID configurations, which distribute data across multiple drives for redundancy and fault tolerance. Additionally, it offers backup and snapshot features, allowing businesses or organizations to create copies of photos at different points in time for easy recovery in case of accidental deletion or data corruption.
    5. Centralized Management: The OceanStor Dorado 8000 V6 provides centralized management capabilities, allowing businesses or organizations to efficiently manage their entire photo collection from a single interface. It offers features like file-level access controls, user authentication, and permission management, ensuring secure and controlled access to photos based on user roles and responsibilities.
    6. Integration with Applications: The NAS system can integrate with various photo management applications or software, enabling businesses or organizations to leverage specialized tools for organizing, categorizing, and editing photos. This integration streamlines workflows and enhances productivity by providing a seamless experience between the storage system and photo management applications.

    Overall, the NAS Huawei OceanStor Dorado 8000 V6 simplifies centralized photo management for businesses or organizations by offering high storage capacity, scalability, performance, data protection, centralized management, and integration capabilities.

  • What are some key features and capabilities of the NAS Huawei OceanStor Dorado 8000 V6 that make it suitable for centralized photo management?

    The Huawei OceanStor Dorado 8000 V6 is a high-performance all-flash storage system that offers several key features and capabilities that make it suitable for centralized photo management. Some of these features include:

    1. High Capacity: The Dorado 8000 V6 provides a massive storage capacity of up to 6 PB (Petabytes), allowing organizations to store a vast number of photos in a centralized manner.
    2. High Performance: With the use of advanced flash technologies like NVMe (Non-Volatile Memory Express), the Dorado 8000 V6 delivers exceptional performance, enabling fast and efficient photo management operations.
    3. Low Latency: The NVMe technology, combined with Huawei's proprietary algorithms, ensures low latency access to stored photos. This means that photos can be accessed quickly, allowing for smooth browsing and retrieval.
    4. Data Deduplication and Compression: The Dorado 8000 V6 incorporates advanced data deduplication and compression techniques, which help to reduce storage space requirements. This is particularly beneficial for photo management, as it allows for efficient storage utilization.
    5. High Availability: The storage system is designed with high availability features such as RAID (Redundant Array of Independent Disks) and active-active controller configurations. These features ensure that photos are always accessible, even in the event of hardware failures.
    6. Scalability: The Dorado 8000 V6 is highly scalable, allowing organizations to easily expand their storage capacity as their photo management needs grow. This scalability ensures that the system can accommodate a growing number of photos over time.
    7. Data Protection: The storage system offers various data protection mechanisms, including snapshots, clones, and remote replication. These features help to safeguard the stored photos against data loss or corruption.
    8. Easy Management: The Dorado 8000 V6 comes with user-friendly management tools that simplify the administration and monitoring of the storage system. This makes it easier for organizations to manage and organize their centralized photo repository.

    Overall, the high capacity, performance, low latency, data reduction techniques, scalability, and data protection features of the Huawei OceanStor Dorado 8000 V6 make it well-suited for centralized photo management, providing organizations with a reliable and efficient solution for storing and accessing their photo assets.

  • How does the NAS Huawei OceanStor Dorado 8000 V6 ensure data security and integrity when it comes to centralized photo management?

    The NAS Huawei OceanStor Dorado 8000 V6 ensures data security and integrity in centralized photo management through several mechanisms:

    1. Encryption: The system supports data encryption at rest and in transit. It uses industry-standard encryption algorithms to protect data from unauthorized access or interception.
    2. Access Control: The NAS provides robust access control mechanisms to regulate who can access and modify the photo data. It supports user authentication, role-based access control, and fine-grained access control policies.
    3. Data Integrity Checks: The system employs data integrity checks, such as checksums or hash functions, to verify the integrity of stored photo data. This ensures that the data remains unchanged and uncorrupted over time.
    4. Backup and Disaster Recovery: The NAS supports backup and disaster recovery features, allowing users to create regular backups of photo data and restore it in case of data loss or system failures. This helps to ensure data availability and minimize the risk of permanent data loss.
    5. Data Replication: The NAS supports data replication across multiple storage nodes or sites. This helps to protect against data loss due to hardware failures or natural disasters, ensuring that photo data remains accessible even in the event of a failure.
    6. Audit Trails: The system maintains detailed audit trails of all user activities and modifications made to the photo data. This helps in monitoring and tracking any unauthorized access or data tampering attempts.
    7. Compliance with Regulations: The NAS complies with various industry regulations and standards related to data security and privacy, such as GDPR (General Data Protection Regulation) or HIPAA (Health Insurance Portability and Accountability Act). This ensures that the centralized photo management solution meets the necessary security requirements.

    Overall, the NAS Huawei OceanStor Dorado 8000 V6 employs a combination of encryption, access control, data integrity checks, backup and recovery, data replication, audit trails, and compliance measures to ensure the security and integrity of photo data in centralized management.

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