How to recover data from Overland Storage SnapServer DX2 NAS

Is your network drive gone, and you are wondering what to do? Has a RAID system crashed, and your files are no longer accessible? Does your device display an error while booting? Have you accidentally rebuilt your RAID system? Are several hard disks out of order?

How to recover data from NAS Overland Storage SnapServer DX2

Overland Storage SnapServer DX2 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from SnapServer DX2.

How to recover data from NAS Overland Storage SnapServer DX2

Recover data from damaged RAID arrays inaccessible from a computer.

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 Overland Storage 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 system logs or event notifications to monitor for early detection of data loss on NAS Overland Storage SnapServer DX2 devices?

Yes, there are specific system logs and event notifications that can be monitored for early detection of data loss on Overland Storage SnapServer DX2 devices. Some of the key logs and notifications to monitor include:

  1. System Event Logs: These logs provide information about system events, errors, warnings, and other activities. Monitoring these logs can help identify any issues or errors that may lead to data loss.
  2. Disk Health and SMART Monitoring: SnapServer DX2 devices support SMART (Self-Monitoring, Analysis, and Reporting Technology) monitoring for hard drives. Monitoring the SMART data can help detect early signs of drive failure or data loss.
  3. RAID Array Health: The SnapServer DX2 devices use RAID (Redundant Array of Independent Disks) for data protection. Monitoring the RAID array health can help identify any issues with the array, such as failed drives or degraded performance, which may result in data loss.
  4. Backup and Replication Status: Monitoring the status of backups and replication jobs can help ensure that data is being properly backed up and replicated to other devices or locations. Any failures or errors in these processes can indicate potential data loss.
  5. Network Connectivity and Errors: Monitoring network connectivity and errors can help identify any issues with the network connection to the SnapServer DX2 device. Network problems can lead to data loss if the device is unable to communicate with other systems or backup targets.

It is important to regularly review and monitor these logs and event notifications to detect any potential issues or errors that may result in data loss. Additionally, configuring email alerts or integrating with a centralized monitoring system can help ensure timely notifications of any critical events.

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

Although NAS SnapServer DX2 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 Overland Storage SnapServer DX2. 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 Overland Storage

How to recover data from a Overland Storage

SnapServer DX2 has 12 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 50;
  • RAID 60;
  • JBOD;
  • DynamicRAID;

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 Overland Storage SnapServer DX2 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 SnapServer DX2, feel free to leave a comment!
  • Frederic Fox
    Frederic Fox 9.09.2023 07:53 #
    How to make backup for NAS Overland Storage SnapServer DX2?
    • Hetman Software
      Hetman Software 9.09.2023 08:00 #

      To make a backup for a NAS Overland Storage SnapServer DX2, you can follow these steps:

      1. Connect an external storage device: Attach an external hard drive or a network-attached storage (NAS) device to the SnapServer DX2. Ensure that the external storage has enough capacity to store the backup.
      2. Configure the backup destination: Access the SnapServer DX2 management interface through a web browser. Log in with the administrator credentials. Navigate to the "Backup" or "Storage" section and specify the external storage device as the backup destination.
      3. Select the data to be backed up: Determine the folders, files, or shares that need to be included in the backup. You can choose specific directories or the entire NAS.
      4. Schedule the backup: Set up a backup schedule according to your requirements. Decide whether you want to perform a full backup or incremental backups at regular intervals. You can typically configure daily, weekly, or monthly backups.
      5. Configure backup settings: Specify any additional backup settings, such as compression, encryption, or retention policies. These settings may vary depending on the backup software or NAS management interface.
      6. Start the backup: Once you have configured the backup settings, initiate the backup process. The SnapServer DX2 should start copying the selected data to the external storage device.
      7. Monitor the backup progress: Keep an eye on the backup progress to ensure it completes successfully. Most NAS devices provide a status indicator or progress bar to monitor the backup process.
      8. Test the backup: After the backup is complete, verify the integrity of the backup data. Restore a sample file or directory from the backup to ensure it can be successfully recovered.
      9. Regularly update the backup: Maintain a regular backup schedule to ensure that your data is continuously protected. Adjust the backup settings as needed and periodically check the backup logs for any errors or warnings.

      Remember to store the external storage device containing the backup in a secure location, preferably off-site, to safeguard against data loss in case of a disaster or theft.

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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 settings that need to be configured on the NAS Overland Storage SnapServer DX2 for optimal performance and security?

    Configuring the NAS Overland Storage SnapServer DX2 for optimal performance and security involves several key settings. Here are some of the important ones:

    1. Network Configuration: Set up the appropriate IP address, subnet mask, gateway, and DNS settings to ensure proper network connectivity.
    2. RAID Configuration: Configure the appropriate RAID level (e.g., RAID 5, RAID 6) based on your storage requirements and redundancy needs.
    3. Access Controls: Set up user accounts with strong passwords and assign appropriate access permissions to ensure secure file access and prevent unauthorized access.
    4. Firewall Settings: Configure the built-in firewall to restrict network traffic and allow only necessary services and ports.
    5. Encryption: Enable encryption for data at rest and data in transit to ensure data security and privacy.
    6. Backup and Snapshot Settings: Configure regular backups and snapshots to protect against data loss and enable quick recovery.
    7. Network File Sharing: Set up appropriate network file sharing protocols like SMB (Server Message Block) or NFS (Network File System) to allow easy access to files across the network.
    8. Antivirus and Malware Protection: Install and configure antivirus and malware protection software to scan files and prevent the spread of malicious software.
    9. Monitoring and Alerting: Enable monitoring and alerting features to receive notifications about system health, storage usage, and potential issues.
    10. Firmware Updates: Regularly update the firmware of the NAS device to ensure you have the latest security patches and performance improvements.

    Remember, the specific settings may vary based on your organization's requirements and the specific model of the NAS device. It is recommended to consult the product documentation or contact the manufacturer for detailed instructions.

  • How can the SnapServer DX2 be configured to ensure efficient data backup and disaster recovery?

    To ensure efficient data backup and disaster recovery on the SnapServer DX2, you can follow these steps:

    1. Implement a regular backup schedule: Set up a backup schedule that suits your needs, whether it's daily, weekly, or monthly. This ensures that your data is backed up regularly and reduces the risk of data loss.
    2. Utilize RAID technology: The SnapServer DX2 supports RAID levels 0, 1, 5, 6, and 10. Configuring your storage array with RAID provides data redundancy and protects against drive failures. Choose a RAID level that balances your storage capacity and performance requirements.
    3. Enable Snapshots: Snapshots allow you to take point-in-time copies of your data. By enabling snapshots, you can quickly restore files or folders to a previous state without relying solely on traditional backups. Configure snapshot schedules to capture multiple versions of your data throughout the day.
    4. Implement offsite replication: Replicating your data to an offsite location provides an additional layer of protection against disasters like fire, flood, or theft. Configure the SnapServer DX2 to replicate data to another SnapServer or a remote location using the built-in replication features.
    5. Use backup software: Consider using backup software that is compatible with the SnapServer DX2. Backup software can provide advanced features like deduplication, compression, and encryption. It also allows you to automate the backup process and manage backups efficiently.
    6. Test backups and disaster recovery plans: Regularly test your backups and disaster recovery plans to ensure they are working correctly. Perform test restores to verify that your data can be recovered successfully. This helps identify any issues or gaps in your backup strategy and allows you to make necessary adjustments.
    7. Monitor and maintain your SnapServer DX2: Regularly monitor the status of your SnapServer DX2 using the management interface. Ensure that firmware and software updates are applied promptly to address any security vulnerabilities or performance improvements.

    By following these steps, you can configure the SnapServer DX2 to ensure efficient data backup and disaster recovery, minimizing the risk of data loss and maximizing data availability.

  • What are the recommended settings for user access control and permissions on the SnapServer DX2 to protect sensitive data and ensure proper data management?

    To protect sensitive data and ensure proper data management on the SnapServer DX2, it is recommended to follow these settings for user access control and permissions:

    1. Create User Accounts: Set up individual user accounts for each person who needs access to the data. This allows you to assign specific permissions to each user.
    2. Use Strong Passwords: Ensure that all user accounts have strong passwords that are difficult to guess. Encourage users to use a combination of uppercase and lowercase letters, numbers, and special characters.
    3. Role-Based Access Control (RBAC): Implement RBAC to assign permissions based on roles rather than individual users. This simplifies access control management and reduces the risk of granting unnecessary permissions.
    4. Least Privilege Principle: Follow the principle of least privilege, granting users only the minimum permissions required to perform their tasks. This minimizes the potential impact of a compromised account.
    5. Access Control Lists (ACLs): Utilize ACLs to control access to specific files and folders. These lists allow you to define which users or groups have read, write, or execute permissions on a granular level.
    6. Regularly Review and Update Permissions: Conduct periodic reviews of user permissions to ensure that they are still appropriate. Remove unnecessary access rights and update permissions as roles change within the organization.
    7. Enable Auditing and Logging: Enable auditing and logging features on the SnapServer DX2 to track and monitor user activity. This helps identify any suspicious or unauthorized access attempts.
    8. Data Encryption: Enable encryption for sensitive data stored on the SnapServer DX2. This adds an extra layer of protection, ensuring that even if unauthorized access occurs, the data remains encrypted and unreadable.
    9. Regular Backups: Implement a regular backup strategy to ensure data can be restored in case of accidental deletion, data corruption, or a security breach.
    10. Train Users: Educate users on best practices for data security, including the importance of not sharing passwords, being cautious with email attachments, and regularly updating their passwords.

    Remember to consult the SnapServer DX2's user manual or contact the manufacturer's support for specific instructions on configuring access control and permissions settings for your device.

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