How to recover data from Buffalo TeraStation WS5220DN08W6 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 Buffalo TeraStation WS5220DN08W6

Buffalo TeraStation WS5220DN08W6 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from TeraStation WS5220DN08W6.

How to recover data from NAS Buffalo TeraStation WS5220DN08W6

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 Buffalo 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 regular disk health monitoring and analysis help in preventing potential data loss on NAS Buffalo TeraStation WS5220DN08W6 devices?

Regular disk health monitoring and analysis can help in preventing potential data loss on NAS Buffalo TeraStation WS5220DN08W6 devices in the following ways:

  1. Early detection of disk failures: By regularly monitoring the health of the disks in the NAS device, you can identify any signs of potential failures such as bad sectors, high temperature, or increased read/write errors. This early detection allows you to take necessary actions like replacing the failing disk before it completely fails, minimizing the risk of data loss.
  2. Predictive analysis: Disk health monitoring tools often provide predictive analysis capabilities that can forecast the remaining lifespan of a disk based on its current health status. This information helps you plan for disk replacements in advance, ensuring that you don't experience unexpected data loss due to sudden disk failures.
  3. RAID array monitoring: NAS devices like Buffalo TeraStation WS5220DN08W6 often use RAID configurations for data redundancy and protection. Regular disk health monitoring allows you to keep an eye on the RAID array's status, ensuring that all disks are functioning correctly and the array is in a healthy state. This helps prevent data loss by detecting any issues with the RAID array, such as degraded or failed disks, and allowing you to take appropriate actions to rebuild or replace the faulty disks.
  4. Proactive maintenance: Monitoring disk health regularly enables you to proactively perform maintenance tasks such as disk defragmentation, firmware updates, or system optimizations. These actions can improve the overall performance and reliability of the NAS device, reducing the chances of data loss due to system errors or inefficiencies.
  5. Data backup and recovery: Disk health monitoring can also remind you to regularly backup your data stored on the NAS device. By having up-to-date backups, you can quickly recover your data in case of disk failures or other catastrophic events.

Overall, regular disk health monitoring and analysis provide insights into the status of the disks and the NAS system, allowing you to take proactive measures to prevent potential data loss and ensure the reliability and availability of your data.

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

Although NAS TeraStation WS5220DN08W6 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 Buffalo TeraStation WS5220DN08W6. 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 Buffalo

How to recover data from a Buffalo

TeraStation WS5220DN08W6 has 2 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • 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 Buffalo TeraStation WS5220DN08W6 network-attached storage keeps Windows Storage Server 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


We will be happy to answer your questions!

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 TeraStation WS5220DN08W6, feel free to leave a comment!
  • Jonathan Raycroft
    Jonathan Raycroft 1.09.2023 07:51 #
    Will data recovery from a NAS Buffalo TeraStation WS5220DN08W6 device be successful if the device was damaged by water or fire?
    • Hetman Software
      Hetman Software 1.09.2023 08:00 #

      The success of data recovery from a water or fire-damaged NAS Buffalo TeraStation WS5220DN08W6 device will depend on the extent of the damage. In general, water and fire can cause significant damage to electronic devices, including NAS devices.

      If the device has been exposed to water, it is crucial to ensure that it is completely dry before attempting any data recovery. Water damage can cause corrosion and short circuits, which may further damage the device and make data recovery more difficult.

      Similarly, fire damage can lead to physical damage to the device's components, including the hard drives where the data is stored. The heat from the fire can melt or warp the internal components, making it challenging to recover the data.

      In both cases, it is recommended to contact a professional data recovery service with experience in dealing with water or fire-damaged devices. They have specialized tools and techniques to handle such situations and maximize the chances of successful data recovery.

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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, 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.


Questions and answers

  • What are the key features and specifications of the additional hard drive compatible with the NAS Buffalo TeraStation WS5220DN08W6?

    The additional hard drive compatible with the NAS Buffalo TeraStation WS5220DN08W6 should have the following key features and specifications:

    1. Form Factor: 3.5-inch SATA hard drive.
    2. Capacity: It should support various capacities, typically ranging from 1TB to 16TB or more.
    3. RPM: It is recommended to use a 7200 RPM drive for optimal performance.
    4. Interface: SATA III (6 Gb/s) or higher for faster data transfer speeds.
    5. NAS Compatibility: The hard drive should be specifically designed for use in network-attached storage (NAS) devices.
    6. RAID Support: It should support RAID configurations like RAID 0, 1, 5, 6, 10, or JBOD (depending on your requirements).
    7. Hot-Swappable: The hard drive should be hot-swappable, allowing for easy replacement or expansion without powering down the NAS.
    8. Cache: A larger cache (e.g., 64MB or 128MB) can improve performance by storing frequently accessed data.
    9. Reliability: Look for drives with high MTBF (Mean Time Between Failures) ratings and advanced error correction technologies.
    10. Power Consumption: Opt for energy-efficient drives to minimize power usage and heat generation.
    11. Noise and Vibration: Consider drives with low noise and vibration levels, especially if the NAS is located in a noise-sensitive environment.
    12. Brand and Warranty: Choose reputable brands known for their reliability and customer support. Look for a warranty period of at least 3 years.

    It is always recommended to check the NAS manufacturer's website or user manual for a list of officially supported hard drives to ensure compatibility and optimal performance.

  • How can I install and configure the additional hard drive in the NAS Buffalo TeraStation WS5220DN08W6?

    To install and configure an additional hard drive in the NAS Buffalo TeraStation WS5220DN08W6, follow these steps:

    1. Power off the TeraStation and disconnect all cables.
    2. Remove the front panel by pressing the release latch on the right side and sliding it to the right.
    3. Locate the empty drive bay and remove the drive tray by pulling the latch on the front.
    4. Insert the additional hard drive into the drive tray, ensuring it is properly aligned with the connectors.
    5. Slide the drive tray back into the empty drive bay until it clicks into place.
    6. Replace the front panel by sliding it to the left until it locks into position.
    7. Connect the TeraStation to power and network cables.
    8. Power on the TeraStation and wait for it to boot up.
    9. Access the TeraStation's web-based configuration interface by entering its IP address in a web browser.
    10. Log in to the interface using the administrator credentials.
    11. Navigate to the "Storage" or "Disks" section of the configuration interface.
    12. Locate the newly installed hard drive and click on it to select it.
    13. Follow the on-screen prompts to initialize and format the hard drive.
    14. Once the formatting is complete, you can configure the new hard drive for storage, backup, or other purposes according to your needs.
    15. You may also need to configure RAID settings if you want to use the new hard drive as part of a RAID array. Consult the TeraStation's user manual or the manufacturer's website for detailed instructions on configuring RAID.

    Note: It is recommended to consult the TeraStation's user manual or the manufacturer's website for specific instructions and any additional steps that may be required for your particular model.

  • What are the benefits of adding an additional hard drive to the NAS Buffalo TeraStation WS5220DN08W6 in terms of storage capacity and data redundancy?

    Adding an additional hard drive to the NAS Buffalo TeraStation WS5220DN08W6 can provide several benefits in terms of storage capacity and data redundancy.

    1. Increased Storage Capacity: By adding an extra hard drive, you can expand the overall storage capacity of the NAS. This allows you to store more data, files, and media without worrying about running out of space.
    2. Data Redundancy and Fault Tolerance: The TeraStation WS5220DN08W6 supports RAID configurations, such as RAID 1 (Mirroring) or RAID 5 (Striping with Parity). With an additional hard drive, you can set up these RAID configurations to ensure data redundancy and fault tolerance.
    • RAID 1: With two hard drives, the data is mirrored across both drives. If one drive fails, the other drive contains an exact copy of the data, ensuring data integrity and availability.
    • RAID 5: In a RAID 5 configuration with three or more drives, the data is striped across multiple drives with parity information. This provides both increased storage capacity and fault tolerance. If one drive fails, the data can be rebuilt using the parity information stored on the remaining drives.
    1. Improved Performance: Depending on the RAID configuration, adding an additional hard drive can improve read and write speeds. RAID configurations like RAID 0 (Striping) can distribute data across multiple drives, allowing for faster access and transfer rates.
    2. Easy Expansion: The TeraStation WS5220DN08W6 is designed to support hot-swappable drives, meaning you can add or replace drives without shutting down the system. This makes it easy to expand storage capacity or replace faulty drives without any downtime.

    Overall, adding an additional hard drive to the NAS Buffalo TeraStation WS5220DN08W6 provides increased storage capacity, data redundancy, fault tolerance, improved performance, and easy expansion options.

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