How to recover data from Buffalo TeraStation TS3420RN1604 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 TS3420RN1604

Buffalo TeraStation TS3420RN1604 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 TS3420RN1604.

How to recover data from NAS Buffalo TeraStation TS3420RN1604

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 known issues with specific anti-virus software that can result in data loss on NAS Buffalo TeraStation TS3420RN1604 devices?

There are no specific known issues with anti-virus software that result in data loss on NAS Buffalo TeraStation TS3420RN1604 devices. However, it is always recommended to use compatible and trusted anti-virus software that is compatible with your NAS device to avoid any potential conflicts or issues. It is also essential to regularly update the firmware and software on your NAS device to ensure optimal performance and security.

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

Although NAS TeraStation TS3420RN1604 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 TS3420RN1604. 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.

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How to recover data from a Buffalo

How to recover data from a Buffalo

TeraStation TS3420RN1604 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 TS3420RN1604 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 TS3420RN1604, feel free to leave a comment!
  • Mel Jinkinson
    Mel Jinkinson 2.09.2023 02:48 #
    Is it possible to recover data from a NAS Buffalo TeraStation TS3420RN1604 device that has undergone a firmware update?
    • Hetman Software
      Hetman Software 2.09.2023 03:59 #

      Yes, it is generally possible to recover data from a NAS device, such as the Buffalo TeraStation TS3420RN1604, even after a firmware update. However, it depends on the specific circumstances and the extent of the changes made during the firmware update.

      If the firmware update process was completed successfully and did not involve any data loss or corruption, your data should still be intact and accessible after the update. In this case, you should be able to access your data as usual.

      However, if the firmware update process encountered any issues or errors that resulted in data loss or corruption, the situation becomes more complicated. In such cases, data recovery may be necessary to retrieve your files.

      To recover data from a NAS device that has undergone a firmware update, you can try the following steps:

      1. Check the NAS device: Ensure that the firmware update was completed successfully and that the device is functioning properly. Make sure all connections are secure and try accessing the data.
      2. Consult the user manual and support resources: Review the user manual and any available documentation or support resources provided by Buffalo to troubleshoot any issues you may encounter. Buffalo's website and customer support can also provide guidance.
      3. Seek professional data recovery assistance: If the data on the NAS device is critical and cannot be accessed through normal means, it may be necessary to seek professional data recovery services. These specialized companies have the expertise and tools to recover data from various storage devices, including NAS devices.

      It is important to note that data recovery is not always guaranteed, especially in cases of severe data corruption or hardware failure. Therefore, it is always recommended to regularly backup your important data to avoid potential data loss situations.

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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

  • How does the data backup process work on the NAS Buffalo TeraStation TS3420RN1604?

    The data backup process on the NAS Buffalo TeraStation TS3420RN1604 can be done using various methods. Here is a general overview of how the process works:

    1. Configuration: First, you need to set up the TeraStation NAS device and connect it to your network. This involves configuring network settings, creating user accounts, and setting up shared folders.
    2. Backup Software: Buffalo provides a built-in backup software called NovaBACKUP for their TeraStation devices. You can install this software on your computer or server that needs to be backed up. Alternatively, you can use other third-party backup software that supports NAS devices.
    3. Backup Source Selection: Once the backup software is installed and configured, you can select the files, folders, or entire volumes that you want to back up from your computer or server. You can choose to back up specific data or perform a full system backup.
    4. Backup Schedule: You can set up a backup schedule to automate the backup process. This allows you to define when and how frequently the backups should occur. You can choose daily, weekly, or monthly schedules, and specify the time of day for the backups to run.
    5. Backup Destination: In the backup software, you need to specify the Buffalo TeraStation NAS as the backup destination. You will provide the NAS's IP address or hostname, along with the appropriate login credentials to access the shared folders.
    6. Backup Execution: Once the backup schedule is set up, the software will automatically initiate the backup process based on the defined schedule. The software will transfer the selected files and folders from the source computer or server to the specified shared folders on the TeraStation NAS.
    7. Incremental Backups: To optimize storage space and reduce backup time, the backup software typically performs incremental backups. This means that only the changed or new files since the last backup are transferred during subsequent backup runs.
    8. Verification and Logging: After each backup, the software may perform a verification process to ensure the integrity of the backup data. It may also generate logs or reports to provide information about the backup status, errors, or warnings.
    9. Restoration: In case of data loss or corruption on the source computer or server, you can restore the backed-up data from the TeraStation NAS. The backup software will provide options to browse and select the specific files or folders you want to restore, and initiate the restoration process.

    It is important to refer to the user manual or documentation provided by Buffalo for detailed instructions specific to the TeraStation TS3420RN1604 model and the included backup software.

  • What are the available options for scheduling and automating data backups on the NAS Buffalo TeraStation TS3420RN1604?

    The Buffalo TeraStation TS3420RN1604 offers several options for scheduling and automating data backups. These options include:

    1. Built-in Backup Software: The TeraStation comes with its own built-in backup software called NovaBACKUP. This software allows you to schedule automatic backups of your data to the NAS. You can choose to back up specific files, folders, or entire volumes, and set the backup frequency and timing according to your needs.
    2. Third-Party Backup Software: The TeraStation also supports third-party backup software such as Acronis True Image, Symantec Backup Exec, and others. These software solutions offer advanced features and flexibility in scheduling and automating backups.
    3. Rsync: The TeraStation supports the Rsync protocol, which is a popular method for synchronizing and backing up data between different devices. Rsync allows you to set up automated backups to the NAS from other devices on your network, or even from remote locations over the internet.
    4. Snapshot Replication: The TeraStation TS3420RN1604 also supports snapshot replication, which is a feature that takes point-in-time copies of your data. You can schedule regular snapshots to be taken automatically, ensuring that you always have multiple versions of your data to restore from in case of accidental deletion or corruption.
    5. Cloud Backup: The TeraStation can be configured to automatically back up your data to cloud storage services such as Amazon S3, Microsoft Azure, or Dropbox. This provides an additional layer of protection for your data by storing it off-site.

    Overall, the TeraStation TS3420RN1604 offers a range of options for scheduling and automating data backups, allowing you to choose the method that best suits your needs and preferences.

  • Can the NAS Buffalo TeraStation TS3420RN1604 perform incremental backups to save storage space and optimize backup times?

    Yes, the NAS Buffalo TeraStation TS3420RN1604 supports incremental backups. Incremental backups only back up the changes made since the last backup, saving storage space and optimizing backup times. This feature allows for efficient and effective backup processes, especially when dealing with large amounts of data.

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