How to recover data from Buffalo TeraStation TS6400DN4804 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 TS6400DN4804

Buffalo TeraStation TS6400DN4804 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 TS6400DN4804.

How to recover data from NAS Buffalo TeraStation TS6400DN4804

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.

Are there any recommended practices for protecting NAS Buffalo TeraStation TS6400DN4804 devices against physical theft or unauthorized access that can lead to data loss?

Yes, there are several recommended practices for protecting NAS Buffalo TeraStation TS6400DN4804 devices against physical theft or unauthorized access. Here are some of them:

  1. Physical Security: Keep the TeraStation in a secure location, such as a locked server room or a locked cabinet, to prevent physical theft.
  2. Access Control: Implement strong user authentication mechanisms, such as unique usernames and complex passwords, to restrict access to the TeraStation. Avoid using default credentials and regularly update passwords.
  3. User Permissions: Assign appropriate user permissions to limit access to sensitive data. Only grant access to authorized users who require it for their work.
  4. Firewall and Network Segmentation: Configure a firewall to restrict incoming and outgoing network traffic to the TeraStation. Additionally, consider segmenting your network to isolate the TeraStation from other devices.
  5. Encryption: Enable encryption on the TeraStation to protect data stored on the device. This ensures that even if the device is stolen, the data remains unreadable without the encryption key.
  6. Firmware Updates: Regularly update the firmware of the TeraStation to address any security vulnerabilities and ensure you have the latest security patches.
  7. Backup and Disaster Recovery: Implement a regular backup strategy to ensure data is securely backed up and can be restored in case of data loss or theft.
  8. Surveillance and Alarms: Consider installing surveillance cameras and alarms in the vicinity of the TeraStation to deter theft and unauthorized access. This can also help in identifying perpetrators if an incident occurs.
  9. Regular Auditing: Conduct regular audits of user access logs and system logs to detect any suspicious activity or unauthorized access attempts.
  10. Training and Awareness: Educate users about best practices for data security, including password hygiene, phishing awareness, and physical security measures.

By implementing these recommended practices, you can significantly enhance the security of your NAS Buffalo TeraStation TS6400DN4804 and protect against physical theft or unauthorized access that can lead to data loss.

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

Although NAS TeraStation TS6400DN4804 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 TS6400DN4804. 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 TS6400DN4804 has 4 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • 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 TS6400DN4804 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


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 TS6400DN4804, feel free to leave a comment!
  • Dominic Leftwich
    Dominic Leftwich 1.09.2023 22:45 #
    Is it possible to recover data from a NAS Buffalo TeraStation TS6400DN4804 device that has been affected by a power surge or electrical malfunction?
    • Hetman Software
      Hetman Software 1.09.2023 23:02 #

      It is possible to recover data from a NAS Buffalo TeraStation TS6400DN4804 device that has been affected by a power surge or electrical malfunction, but it depends on the extent of the damage caused by the surge or malfunction.

      In some cases, the data may still be intact on the hard drives inside the NAS device, but the device itself may be non-functional. In this case, you can remove the hard drives from the NAS and connect them to a computer using a SATA to USB adapter or by installing them directly into a computer. You can then attempt to recover the data using data recovery software or by seeking professional help from a data recovery service.

      However, if the power surge or electrical malfunction has caused physical damage to the hard drives themselves, data recovery becomes much more difficult and may require the assistance of a professional data recovery service. They have specialized equipment and expertise to recover data from physically damaged drives.

      It is important to note that attempting data recovery on your own may further damage the drives or result in permanent data loss. It is recommended to seek professional help if the data on the NAS device is critical and valuable.

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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

  • Can the NAS Buffalo TeraStation TS6400DN4804 operate seamlessly with Wi-Fi standard, or does it require a wired connection for optimal performance?

    The NAS Buffalo TeraStation TS6400DN4804 does not have built-in Wi-Fi capability. It requires a wired connection for optimal performance. However, you can connect the NAS to a Wi-Fi router using an Ethernet cable, allowing devices on the Wi-Fi network to access the NAS.

  • What are the specific Wi-Fi standards supported by the NAS Buffalo TeraStation TS6400DN4804, and does it offer compatibility with the latest Wi-Fi protocols?

    The NAS Buffalo TeraStation TS6400DN4804 does not support Wi-Fi standards or protocols directly. It is a network-attached storage device designed to connect to a wired network using Ethernet. It does not have built-in Wi-Fi capabilities. Therefore, it does not offer compatibility with any Wi-Fi protocols.

  • Are there any limitations or considerations to keep in mind when using the NAS Buffalo TeraStation TS6400DN4804 with Wi-Fi, such as potential speed or range limitations?

    Yes, there are some limitations and considerations to keep in mind when using the NAS Buffalo TeraStation TS6400DN4804 with Wi-Fi.

    1. Speed limitations: The speed of the Wi-Fi connection will depend on the Wi-Fi standard supported by the TeraStation and the connected devices. The TS6400DN4804 supports Wi-Fi 5 (802.11ac) standard, which can provide high speeds, but the actual speed may be limited by factors like signal interference, distance from the router, and the capabilities of the connected devices.
    2. Range limitations: Wi-Fi signals have a limited range, and the effective range can be affected by various factors like obstructions (walls, furniture), interference from other electronic devices, and the physical layout of your environment. The TS6400DN4804's Wi-Fi range may not be as extensive as that of a dedicated Wi-Fi router, so it's important to consider the distance between the NAS and the Wi-Fi router to ensure a stable connection.
    3. Interference: The TS6400DN4804's Wi-Fi performance can be affected by interference from other Wi-Fi networks, Bluetooth devices, cordless phones, microwave ovens, and other electronic devices operating in the same frequency range. It's recommended to choose an optimal Wi-Fi channel and place the NAS away from potential sources of interference.
    4. Security: Wi-Fi networks are susceptible to security risks, such as unauthorized access or data interception. Ensure that you have enabled proper security measures like Wi-Fi encryption (WPA2/WPA3) and strong passwords to protect your data.
    5. Multiple users: If you have multiple users accessing the NAS simultaneously over Wi-Fi, the overall network performance may be affected. The Wi-Fi bandwidth needs to be shared among all connected devices, so heavy usage by one device may impact the speed experienced by others.
    6. Wired connection: For optimal performance and stability, consider using a wired Ethernet connection instead of Wi-Fi if possible, especially for tasks that require high data transfer speeds or low latency.

    It's important to evaluate your specific requirements and environment to determine if the TS6400DN4804's Wi-Fi capabilities meet your needs or if additional networking options like wired connections or Wi-Fi range extenders are necessary.

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