Practical Steps for Accessing Files on a RAID Disk Without Operational NAS Overland Storage SnapServer 210

Has your NAS Overland Storage SnapServer 210 suddenly lost its network drive and you’re unsure what to do next? Did the RAID array collapse, making your files inaccessible? Is the device throwing errors during startup? Perhaps you accidentally rebuilt the RAID array or several hard drives failed at the same time?

Practical Steps for Accessing Files on a RAID Disk Without Operational NAS Overland Storage SnapServer 210
Data Recovery Tool

Overland Storage SnapServer 210 NAS Data Recovery in 2025

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from an SnapServer 210. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

Practical Steps for Accessing Files on a RAID Disk Without Operational NAS Overland Storage SnapServer 210

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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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 Overland Storage 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.

How can hardware failure lead to data loss in NAS Overland Storage SnapServer 210 devices?

Hardware failure in NAS Overland Storage SnapServer 210 devices can lead to data loss in several ways:

  1. Hard Drive Failure: The SnapServer 210 typically uses multiple hard drives in a RAID configuration to store data. If one or more of these drives fail, it can result in data loss. The failure could be due to mechanical issues, firmware corruption, or other factors.
  2. Power Supply Failure: A malfunctioning power supply can cause sudden power outages or fluctuations, which may result in data corruption or loss. It can also damage the internal components of the SnapServer 210, including the hard drives.
  3. Controller Failure: The controller in the SnapServer 210 manages the storage system and facilitates data access. If the controller fails, it can lead to data inaccessibility or corruption.
  4. Fan Failure: The SnapServer 210 relies on fans to maintain optimal operating temperatures. If the fans fail, it can cause the device to overheat, potentially damaging the internal components and leading to data loss.
  5. Network Interface Failure: The SnapServer 210 connects to the network through its network interface. If the interface fails, it can result in the device becoming inaccessible, leading to data loss.
  6. Firmware or Software Corruption: Hardware failures can sometimes cause firmware or software corruption in the SnapServer 210. This corruption can lead to data loss or inaccessibility.

It is important to regularly back up data stored on NAS devices like the SnapServer 210 to minimize the risk of data loss in case of hardware failure.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS SnapServer 210 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:

  1. 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.

  2. 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.

  3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

  4. 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.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

Hetman Raid Recovery

This program restores data from damaged RAID arrays and is fully compatible with Overland Storage SnapServer 210. 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.

Go to view
How to recover data from a Overland Storage

How to recover data from a Overland Storage

SnapServer 210 has 4 HDD slots, and it supports the following array types:

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

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:

  1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

  2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

  3. 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.

    Hetman RAID Recovery: Image Creation Wizard

  4. 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.

    Hetman RAID Recovery: Choose a disk or save the image via FTP

Where Are the User’s Files Actually Stored?

The Overland Storage SnapServer 210 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

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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 210, feel free to leave a comment!
    Reply
  • Lewis Makepeace
    Lewis Makepeace 9.09.2023 10:46 #
    Is it possible to recover data from a NAS Overland Storage SnapServer 210 device that has been affected by a power surge or electrical malfunction?
    Reply
    • Hetman Software
      Hetman Software 9.09.2023 11:00 #

      Recovering data from a NAS device that has been affected by a power surge or electrical malfunction is possible, but it can be challenging and may require professional assistance. Here are a few steps you can take:

      1. Check the power supply: Ensure that the power supply to the NAS device is stable and functioning correctly. If there are any issues with the power supply, resolve them first.
      2. Assess physical damage: Inspect the NAS device for any visible physical damage caused by the power surge or electrical malfunction. Look for burnt components, blown capacitors, or any other signs of damage. If you find any, it's best to contact a professional data recovery service.
      3. Remove hard drives: If the NAS device is not functioning properly, you can try removing the hard drives and connecting them to a different computer to see if they are still accessible. Use a compatible interface or a USB adapter to connect the drives.
      4. Seek professional help: If the above steps don't work or if you are not comfortable handling the recovery process yourself, it is recommended to contact a professional data recovery service. They have specialized tools and expertise to deal with complex data recovery scenarios.

      Remember, attempting data recovery on your own can be risky and may further damage the device or data. It's always best to consult with professionals who have experience in dealing with NAS devices and power-related issues.

      Reply
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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 Overland Storage SnapServer 210 for data backup on NAS?

    The Overland Storage SnapServer 210 offers several key features and capabilities for data backup on NAS:

    1. High-capacity storage: The SnapServer 210 provides up to 32TB of storage capacity, allowing for the backup and storage of large amounts of data.
    2. RAID protection: The device supports RAID levels 0, 1, 5, and 6, providing data redundancy and protection against drive failures.
    3. Snapshot technology: The SnapServer 210 utilizes snapshot technology to create point-in-time copies of data, allowing for quick and efficient backups without impacting ongoing operations.
    4. Replication and disaster recovery: The device supports replication to another SnapServer or offsite location, enabling disaster recovery and ensuring data availability in case of hardware failure or site-wide disasters.
    5. Data deduplication: The SnapServer 210 includes data deduplication capabilities, which eliminate redundant data and reduce storage requirements, optimizing backup efficiency.
    6. Backup software integration: The device is compatible with popular backup software solutions, such as Veeam, Arcserve, and Symantec Backup Exec, allowing for seamless integration into existing backup workflows.
    7. Scalability: The SnapServer 210 can be easily expanded by adding additional drives or connecting to other SnapServer units, providing scalability to accommodate growing data backup needs.
    8. User-friendly interface: The device features a user-friendly web-based interface, making it easy to configure and manage backup settings and schedules.
    9. Data security: The SnapServer 210 supports data encryption, ensuring that data stored on the NAS is protected from unauthorized access.
    10. Cross-platform compatibility: The device is compatible with both Windows and Mac operating systems, allowing for easy integration into mixed computing environments.
  • How does the Overland Storage SnapServer 210 ensure data reliability and redundancy for backup purposes?

    The Overland Storage SnapServer 210 ensures data reliability and redundancy for backup purposes through several features:

    1. RAID Technology: The SnapServer 210 supports RAID levels 0, 1, 5, 6, and 10. RAID (Redundant Array of Independent Disks) technology combines multiple physical drives into a single logical unit, providing data redundancy and protection against drive failures. This ensures that even if one or more drives fail, the data remains intact and accessible.
    2. Hot Spare Drives: The SnapServer 210 allows for the configuration of hot spare drives. These drives are kept in standby mode and can automatically replace a failed drive in the RAID array, minimizing downtime and ensuring continuous data availability.
    3. Snapshots: The SnapServer 210 supports snapshot technology, which enables the creation of point-in-time copies of data. Snapshots capture the state of the data at a specific moment, allowing for quick and efficient recovery in case of accidental deletion, data corruption, or other issues. Snapshots can be scheduled at regular intervals to provide multiple recovery points.
    4. Replication: The SnapServer 210 supports data replication, allowing for the creation of redundant copies of data on another SnapServer device or remote location. Replication ensures that data is stored in multiple locations, providing an additional layer of protection against data loss due to hardware failures, natural disasters, or other unforeseen events.
    5. Backup Software Integration: The SnapServer 210 is compatible with various backup software solutions, enabling seamless integration with existing backup infrastructure. This ensures that backups can be scheduled, managed, and monitored effectively, enhancing data reliability and redundancy.

    Overall, the combination of RAID technology, hot spare drives, snapshots, replication, and backup software integration in the SnapServer 210 ensures data reliability and redundancy, minimizing the risk of data loss and enabling efficient backup and recovery operations.

  • What are the recommended best practices for setting up and managing data backup on the Overland Storage SnapServer 210 NAS device?

    Here are some recommended best practices for setting up and managing data backup on the Overland Storage SnapServer 210 NAS device:

    1. Determine your backup requirements: Before setting up data backup, assess your organization's backup needs. Consider factors such as the amount of data, frequency of backups, and recovery time objectives (RTOs) and recovery point objectives (RPOs) required.
    2. Implement a backup schedule: Create a backup schedule that suits your organization's needs. Determine the frequency of backups (daily, weekly, etc.) and the retention period for each backup.
    3. Use multiple backup methods: Utilize a combination of full backups, incremental backups, and differential backups to optimize backup efficiency and minimize storage requirements. Full backups capture all data, while incremental backups only capture changes since the last backup, and differential backups capture changes since the last full backup.
    4. Enable snapshot technology: The Overland Storage SnapServer 210 NAS device supports snapshot technology, which allows for point-in-time copies of data. Enable and configure snapshots to provide an additional layer of data protection and faster recovery options.
    5. Utilize offsite backup: Implement an offsite backup strategy to protect against disasters and ensure data availability in case of on-site failures. This can involve replicating data to another SnapServer device at a different location or using cloud-based backup services.
    6. Regularly test backups: Perform periodic tests to ensure the integrity and recoverability of your backups. Test the restoration process to validate that backups are working as expected and that data can be recovered successfully.
    7. Monitor backup status: Regularly monitor the backup status and review backup logs to ensure backups are running without errors. Set up email notifications or alerts to promptly address any backup failures or issues.
    8. Secure backups: Implement appropriate security measures to protect backup data. This can include encryption of backup data, securing access to backup devices, and restricting user permissions to prevent unauthorized access or modification.
    9. Document backup procedures: Maintain thorough documentation of backup procedures, including the backup schedule, configuration settings, and recovery procedures. This documentation will be helpful in case of staff turnover or during disaster recovery scenarios.
    10. Regularly review and update backup strategy: Periodically review and update your backup strategy to accommodate changes in data growth, business requirements, and technology advancements. Regularly reassess your backup solution to ensure it aligns with your organization's evolving needs.

    Remember, it is recommended to consult the Overland Storage SnapServer 210 NAS device's documentation and support resources for specific guidelines and best practices tailored to your setup.
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