How to recover data from Synology DiskStation DS3622xs+ 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 DiskStation DS3622xs+

Synology DiskStation DS3622xs+ NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from DiskStation DS3622xs+.

How to recover data from NAS Synology DiskStation DS3622xs+

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.

How can quality of service (QoS) settings impact data transfer reliability on NAS Synology DiskStation DS3622xs+ devices?

Quality of Service (QoS) settings can have a significant impact on data transfer reliability on NAS Synology DiskStation DS3622xs+ devices. Here are a few ways QoS settings can affect data transfer reliability:

  1. Bandwidth Allocation: QoS settings allow you to prioritize and allocate bandwidth to specific applications or services. By allocating sufficient bandwidth to data transfer processes, you can ensure that they receive the necessary resources for uninterrupted and reliable transfer.
  2. Traffic Prioritization: QoS settings enable you to prioritize certain types of traffic over others. For example, you can prioritize data transfer traffic over web browsing or streaming services. By giving priority to data transfer, you can minimize the chances of interruptions or delays caused by other network activities.
  3. Congestion Management: QoS settings help in managing network congestion by controlling the flow of data. They can prevent network congestion from affecting data transfer reliability by prioritizing and regulating the transfer process. This ensures that data transfer processes receive adequate resources even during periods of high network traffic.
  4. Packet Prioritization: QoS settings can prioritize certain types of packets within a data transfer process. By giving higher priority to critical packets, such as those carrying important file chunks or metadata, you can ensure that they are transmitted with minimal delay and higher reliability.
  5. Latency Control: QoS settings can help control network latency, which is crucial for data transfer reliability. By prioritizing data transfer traffic and minimizing latency-inducing activities, such as background downloads or uploads, you can reduce the chances of packet loss and improve overall reliability.

It's important to configure QoS settings appropriately based on your network environment and requirements. By optimizing QoS settings on your NAS Synology DiskStation DS3622xs+ device, you can ensure reliable data transfer and minimize potential disruptions or performance issues.

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

Although NAS DiskStation DS3622xs+ 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 DiskStation DS3622xs+. 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

DiskStation DS3622xs+ has 12 HDD slots, and it supports the following array types:

  • Synology Hybrid RAID (SHR);
  • RAID 6;
  • RAID 5;
  • RAID 10;
  • RAID 1;
  • RAID 0;
  • Basic;
  • JBOD;

NAS supports:

  • Btrfs;
  • EXT4;
  • EXT3 (External Disk Only);
  • FAT32 (External Disk Only);
  • exFAT (External Disk Only);
  • NTFS (External Disk Only);
  • HFS+ (External Disk Read 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 DiskStation DS3622xs+ 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 DiskStation DS3622xs+, 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 key features and specifications of the Synology DiskStation DS3622xs+ that make it suitable for internet access?

    The Synology DiskStation DS3622xs+ is a high-performance network-attached storage (NAS) solution that offers several key features and specifications that make it suitable for internet access. Some of these features include:

    1. High-performance processor: The DS3622xs+ is powered by an Intel Xeon D-1567 12-core processor, which provides ample processing power to handle internet traffic and data transfers efficiently.
    2. Large storage capacity: It supports up to 12 drive bays, allowing for a significant amount of storage capacity. This is crucial for storing and accessing internet-related data, such as website files, media content, or cloud backups.
    3. Dual 10GbE ports: The DS3622xs+ is equipped with two 10 Gigabit Ethernet ports, enabling high-speed internet connectivity. This is particularly useful for businesses or individuals with demanding internet access requirements.
    4. SSD caching support: It supports SSD caching, allowing frequently accessed data to be stored on solid-state drives for faster retrieval. This feature enhances internet access performance by reducing latency and improving overall system responsiveness.
    5. Scalability and expandability: The DS3622xs+ is designed to be highly scalable, allowing users to easily expand their storage capacity as their internet access needs grow. It supports expansion units, which can be connected to increase the available drive bays.
    6. Advanced data protection: It offers various data protection features, including RAID configurations, snapshot technology, and built-in data encryption. These features ensure the security and integrity of internet-accessible data.
    7. Comprehensive software ecosystem: Synology provides a wide range of software applications and services that enhance internet access capabilities. These include file sharing, multimedia streaming, virtualization, surveillance, and backup solutions.

    Overall, the Synology DiskStation DS3622xs+ combines powerful hardware, high-speed connectivity, and advanced software features to provide a reliable and efficient NAS solution for internet access.

  • How does the Synology DiskStation DS3622xs+ ensure secure and reliable internet access for connected devices?

    The Synology DiskStation DS3622xs+ ensures secure and reliable internet access for connected devices through various features and technologies. Here are some ways it achieves this:

    1. Firewall Protection: The DS3622xs+ has a built-in firewall that helps protect against unauthorized access and malicious activities. It can filter incoming and outgoing network traffic, allowing only authorized connections.
    2. VPN Support: It supports Virtual Private Network (VPN) protocols such as OpenVPN and L2TP/IPSec, enabling users to create secure connections to the DiskStation from remote locations. This ensures that data transmitted between the connected devices and the DiskStation remains encrypted and secure.
    3. SSL/TLS Encryption: The DiskStation supports SSL/TLS encryption for secure data transfer over the internet. This ensures that sensitive information transmitted between the DiskStation and connected devices is encrypted and protected from eavesdropping or interception.
    4. Two-Factor Authentication (2FA): The DS3622xs+ supports 2FA, adding an extra layer of security to the login process. Users can enable 2FA to require a second verification step, such as a temporary code generated by a mobile app, in addition to their username and password.
    5. Automatic Updates and Security Fixes: Synology regularly releases firmware updates and security fixes for their DiskStation devices. These updates address vulnerabilities and enhance security, ensuring that the device remains protected against emerging threats.
    6. Application Whitelisting: The DiskStation allows users to define application whitelists, specifying which applications are allowed to access the internet. This prevents unauthorized applications from accessing the network and helps mitigate the risk of malware or unauthorized access.
    7. User Access Control: The DS3622xs+ provides comprehensive user access control, allowing administrators to define user permissions and access rights. This ensures that only authorized users can access specific files, folders, or services on the DiskStation.
    8. Network Intrusion Detection and Prevention: The DiskStation includes features like Network Intrusion Detection and Prevention System (IDS/IPS) that can detect and block suspicious network traffic, protecting against potential attacks and intrusions.

    By combining these security measures, the Synology DiskStation DS3622xs+ ensures that connected devices can access the internet securely and reliably, protecting data and preventing unauthorized access.

  • Can the Synology DiskStation DS3622xs+ be used as a central hub for managing and monitoring internet access for multiple users or devices?

    Yes, the Synology DiskStation DS3622xs+ can be used as a central hub for managing and monitoring internet access for multiple users or devices. It is equipped with comprehensive network management and security features that allow you to control and monitor internet access. You can set up user accounts, create access rules, manage bandwidth usage, and even enable content filtering to restrict access to certain websites or categories. Additionally, the DiskStation DS3622xs+ supports various VPN protocols, allowing you to establish secure remote connections for users accessing the internet from outside your network.

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