How to recover data from Synology RackStation RS212 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 Synology RackStation RS212

Synology RackStation RS212 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from RackStation RS212.

How to recover data from NAS Synology RackStation RS212

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 Synology also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

Can overheating or improper ventilation cause data loss on NAS Synology RackStation RS212 devices?

Yes, overheating or improper ventilation can potentially cause data loss on NAS Synology RackStation RS212 devices. NAS devices generate heat during operation, and if they are not properly ventilated or if the cooling system fails, the internal components can overheat. Overheating can lead to various issues, including data corruption or damage to the hard drives, which can result in data loss.

It is important to ensure that the NAS device is placed in a well-ventilated area and that the cooling system is functioning properly. Regularly cleaning the fans and ensuring that the airflow is not obstructed can help prevent overheating. Additionally, it is recommended to monitor the temperature of the NAS device and take appropriate measures if it exceeds safe levels, such as adding additional cooling or relocating the device to a cooler environment.

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

Although NAS RackStation RS212 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 Synology RackStation RS212. 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 Synology

How to recover data from a Synology

RackStation RS212 has 2 HDD slots, and it supports the following array types:

  • Synology Hybrid RAID;
  • RAID 1;
  • RAID 0;
  • Basic;
  • JBOD;

NAS supports:

  • EXT4;
  • EXT3 (External Disk Only);
  • FAT32 (External Disk Only);
  • NTFS (External Disk Only);
  • HFS+ (External Disk Only);

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 Synology RackStation RS212 network-attached storage keeps DSM (DiskStation Manager) 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 (1)

  • 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 RackStation RS212, feel free to leave a comment!
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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 steps involved in setting up remote access to files on the NAS Synology RackStation RS212?

    To set up remote access to files on the NAS Synology RackStation RS212, follow these steps:

    1. Connect the NAS to your network: Ensure that the NAS is properly connected to your local network using an Ethernet cable. Power on the NAS and wait for it to fully boot up.
    2. Configure network settings: Access the NAS administration interface by typing the NAS IP address into a web browser. Login using your admin credentials. Go to "Control Panel" and then "Network" to configure the network settings. Ensure that the NAS has a static IP address and is connected to the correct network.
    3. Enable File Services: In the NAS administration interface, go to "Control Panel" and then "File Services". Enable the necessary file services such as SMB (Windows File Service) or AFP (Apple File Service) based on your requirements. Save the settings.
    4. Set up shared folders: Create shared folders on the NAS to store your files. Go to "Control Panel" and then "Shared Folder". Click on "Create" to create a new shared folder. Specify the folder name, permissions, and other settings as desired. Repeat this step for each shared folder you want to create.
    5. Set up user accounts: Create user accounts on the NAS to control access to the shared folders. Go to "Control Panel" and then "User". Click on "Create" to create a new user account. Specify the username, password, and other settings as required. Repeat this step for each user account you want to create.
    6. Configure remote access: In the NAS administration interface, go to "Control Panel" and then "External Access". Enable the necessary external access methods such as QuickConnect or DDNS (Dynamic DNS) based on your preference. Follow the on-screen instructions to complete the setup process.
    7. Set up port forwarding (if required): If you are using DDNS or need to access the NAS from outside your local network, you may need to set up port forwarding on your router. Refer to the router's manual or documentation for instructions on how to configure port forwarding.
    8. Install and configure remote access applications: Install the necessary applications on your remote devices to access the NAS files remotely. Synology provides various applications like DS File, DS Finder, or File Station for different platforms. Download and install the appropriate application for your device. Launch the application and follow the on-screen instructions to configure remote access using the provided login credentials.

    Once you have completed these steps, you should be able to access your files remotely on the NAS Synology RackStation RS212 using the configured remote access methods and applications.

  • What security measures should be taken when accessing files on the NAS Synology RackStation RS212 remotely?

    When accessing files on the NAS Synology RackStation RS212 remotely, several security measures should be taken to ensure the safety and integrity of the data. Here are some recommended steps:

    1. Enable HTTPS: Use HTTPS instead of HTTP to encrypt the communication between your remote device and the NAS. This prevents eavesdropping and data interception.
    2. Use a VPN: Set up a Virtual Private Network (VPN) to establish a secure and encrypted connection between your remote device and the NAS. This adds an extra layer of security by creating a private network tunnel.
    3. Enable Two-Factor Authentication (2FA): Implement 2FA for remote access to the NAS. This requires users to provide a second form of authentication, such as a code generated by a mobile app, in addition to their password. It enhances security by preventing unauthorized access even if the password is compromised.
    4. Configure Firewall: Set up a firewall to control the incoming and outgoing network traffic. Restrict access to specific IP addresses or networks to minimize the risk of unauthorized access.
    5. Regularly Update Firmware: Keep the NAS firmware up to date with the latest security patches and updates. This ensures that any known vulnerabilities are patched, reducing the risk of exploitation.
    6. Disable Unused Services: Disable any unnecessary services or protocols on the NAS to minimize the attack surface. Only enable the services required for remote file access.
    7. Use Strong Usernames and Passwords: Implement strong and unique usernames and passwords for all user accounts on the NAS. Avoid using default or easily guessable credentials.
    8. Regularly Backup Data: Maintain regular backups of the NAS data to ensure that even if there is a security breach, you can restore the data to a previous state.
    9. Monitor Logs: Enable and review logs on the NAS to detect any suspicious activities or unauthorized access attempts. This helps in identifying and responding to security incidents.
    10. Educate Users: Provide training and awareness to users about best practices for remote access and security. Educate them about the risks associated with remote file access and the importance of following security measures.

    By following these security measures, you can enhance the security of accessing files on the NAS Synology RackStation RS212 remotely and protect your data from unauthorized access or breaches.

  • Are there any limitations or restrictions in accessing files on the NAS Synology RackStation RS212 from a remote location, such as file size or transfer speeds?

    Yes, there are certain limitations and restrictions when accessing files on a Synology RackStation RS212 from a remote location. Some of these limitations include:

    1. Bandwidth: The transfer speed will depend on the available internet bandwidth at both the remote location and the NAS device's location. Slow internet speeds can result in slower file transfer rates.
    2. File Size: The maximum file size that can be transferred or accessed remotely will depend on the file system used on the Synology NAS. For example, if the NAS is using the EXT4 file system, the maximum file size limit is 16TB.
    3. Network Configuration: The remote location must have proper network configurations, such as port forwarding or VPN setup, to allow remote access to the NAS device. These configurations may require some technical knowledge and setup.
    4. Security: Accessing files remotely may require setting up secure connections using protocols like HTTPS or VPN to ensure data security and prevent unauthorized access.
    5. NAS Performance: The performance of the NAS device itself, such as its processor, memory, and network interface, can also impact the file transfer speeds. Higher-end models typically offer better performance.

    It is recommended to check the specific specifications and capabilities of the Synology RackStation RS212 and consult the user manual or Synology's support resources for more detailed information on limitations and restrictions related to remote file access.

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