What is SSH (Secure Shell) and what is its purpose in network communication?

SSH (Secure Shell) is a cryptographic network protocol that provides a secure way to access and manage remote machines over an unsecured network. It is widely used for secure remote administration of systems and secure file transfers.The purpose of SSH in network communication is to establish a secure and encrypted connection between two systems, allowing secure remote access and data transfer. It ensures the confidentiality and integrity of data by encrypting all communication between the client and the server. SSH also provides authentication mechanisms to verify the identity of the parties involved in the communication, preventing unauthorized access. It is commonly used by system administrators, developers, and users who need to remotely manage or access systems, as it offers a secure alternative to protocols like Telnet and FTP.

How does the NAS Idis DR-2216P utilize SSH protocol for secure remote access and file transfers?

The NAS Idis DR-2216P utilizes the SSH (Secure Shell) protocol for secure remote access and file transfers by implementing the following mechanisms:Encryption: SSH ensures secure communication by encrypting the data transferred between the client and the server. This prevents unauthorized access or eavesdropping on the network.Authentication: SSH employs various authentication methods to verify the identity of the client connecting to the NAS. This can include password-based authentication, public key authentication, or certificate-based authentication.Secure Remote Access: The NAS supports SSH remote access, allowing users to securely log in to the device remotely using an SSH client. This ensures that the connection is protected from potential attacks or unauthorized access.Secure File Transfers: The NAS supports secure file transfers using the SSH protocol. Users can securely transfer files between the NAS and their local machine using tools like Secure Copy (SCP) or Secure File Transfer Protocol (SFTP). These protocols ensure that the file transfers are encrypted and secure.Overall, by utilizing the SSH protocol, the NAS Idis DR-2216P provides a secure and encrypted environment for remote access and file transfers, ensuring the confidentiality and integrity of the data exchanged between the client and the NAS.

Can you explain the advantages and security features provided by SSH in the context of NAS systems, specifically in the case of the NAS Idis DR-2216P?

Sure! SSH (Secure Shell) is a network protocol that provides secure remote access to systems over an unsecured network. It offers several advantages and security features when used in the context of NAS (Network Attached Storage) systems, such as the NAS Idis DR-2216P. Here are some key points:Advantages of SSH in NAS systems:Secure Remote Access: SSH allows users to securely access and manage their NAS system remotely. It establishes an encrypted connection, preventing unauthorized access and protecting data transmission.Data Encryption: SSH encrypts all data transmitted between the client and the NAS system, ensuring that sensitive information, such as login credentials and files, remain secure.Authentication: SSH uses various authentication methods, including password-based authentication and public-key cryptography. This helps ensure that only authorized users can access the NAS system.Portability: SSH is widely supported across different operating systems and platforms. This allows users to access their NAS system from various devices, including Windows, macOS, Linux, and mobile devices.Security features provided by SSH in NAS systems:Encryption: SSH uses strong encryption algorithms, such as AES (Advanced Encryption Standard), to protect data confidentiality during transmission. This prevents eavesdropping and data interception.Secure File Transfer: SSH includes SFTP (SSH File Transfer Protocol), which provides a secure method for transferring files between the client and the NAS system. SFTP encrypts file transfers, ensuring data integrity and preventing unauthorized access.Two-Factor Authentication (2FA): SSH supports 2FA, which adds an extra layer of security by requiring users to provide two forms of identification, typically a password and a unique verification code. This helps prevent unauthorized access even if the password is compromised.Firewall Friendly: SSH can be configured to use different ports, making it firewall-friendly. It allows administrators to restrict access to the NAS system by allowing SSH traffic only from specific IP addresses or networks.Auditing and Logging: SSH provides detailed logging capabilities, allowing administrators to monitor and track SSH access and activities on the NAS system. This aids in identifying any unauthorized access attempts or suspicious activities.It's important to note that while SSH provides strong security features, it's crucial to properly configure and update the NAS system, including SSH settings, to ensure maximum security. Additionally, using strong passwords and regularly updating them further enhances the security of the NAS system.

NAS Idis DR-2216P Recovery: Managing Faulty RAID Arrays

Name: How to recover data from a Idis
Uploaded: 2025-10-16T08:53:56+03:00
Description: How to recover data from a Idis

Has your NAS Idis DR-2216P suddenly lost its network drive and you’re unsure what to do next? Did the RAID array collapse, making your files inaccessible? Is the device throwing errors during startup? Perhaps you accidentally rebuilt the RAID array or several hard drives failed at the same time?

NAS Idis DR-2216P Recovery: Managing Faulty RAID Arrays

Data Recovery Tool

Idis DR-2216P NAS Data Recovery in 2025

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from an DR-2216P. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

Contents

Why Regular Data Recovery Tools Can’t Restore Files from RAID
Key Information About the NAS Idis DR-2216P
How to Remove Hard Disks from Your NAS and Connect Them to a PC

RAID Recovery™ 2.8

Recover data from damaged RAID arrays inaccessible from a computer.

Download

Why Regular Data Recovery Tools Can’t Restore Files from RAID

Conventional hard drives store user data by writing it sequentially across the disk surface, which means an entire file is typically located on a single drive. In contrast, when data is written to a RAID array, each file is split into multiple fragments. These fragments are then distributed and written in sequence across all the drives in the array. Depending on the configuration, fragment sizes can range from 2 KB to 2 MB, so every file is physically stored across several disks at once.

This approach significantly increases read and write performance — after all, writing two halves of a 1 GB file to two drives simultaneously is much faster than writing the full 1 GB to a single disk. However, this same mechanism makes file recovery far more complex.

Different RAID levels use different methods to distribute and protect data. On top of that, manufacturers like Idis often add their own proprietary structures and variations. As a result, data can be written to disks in many different formats, and each requires a specific approach during recovery.

Are there any specific network security measures to implement for safeguarding NAS Idis DR-2216P devices against data loss?

Yes, there are several network security measures that can be implemented to safeguard NAS Idis DR-2216P devices against data loss. Here are some recommendations:

Secure Network Configuration: Ensure that the NAS device is connected to a secure network. Use strong passwords for network access and disable any unnecessary services or ports.
Firewall Protection: Implement a firewall to restrict unauthorized access to the NAS device. Configure the firewall to only allow necessary network traffic and block all other incoming connections.
Regular Firmware Updates: Keep the NAS device's firmware up to date with the latest security patches. Manufacturers often release firmware updates to address vulnerabilities and improve security.
Enable Authentication and Access Controls: Implement strong authentication mechanisms such as two-factor authentication (2FA) to prevent unauthorized access. Also, configure access controls to restrict user privileges and limit access to sensitive data.
Data Encryption: Enable encryption for data stored on the NAS device. This ensures that even if the device is compromised, the data remains protected and unreadable.
Backup and Disaster Recovery: Implement a regular backup strategy to create copies of the data stored on the NAS device. Store backups in a separate location or on a different device to protect against data loss in case of device failure or physical damage.
Network Intrusion Detection System (NIDS): Deploy a NIDS to monitor network traffic and detect any suspicious activities or intrusion attempts. This helps in identifying and mitigating potential security threats.
Physical Security: Ensure that the NAS device is physically secured in a locked room or cabinet to prevent unauthorized access or theft.
User Education: Educate users about best practices for network security, such as avoiding suspicious links or attachments, using strong passwords, and regularly updating software.

By implementing these network security measures, you can significantly reduce the risk of data loss and enhance the overall security of your NAS Idis DR-2216P devices.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS DR-2216P can be accessed over the network, you still need to remove its hard disks and connect them directly to a Windows PC. Only then can the recovery software properly scan and analyze the drives. Follow these steps:

Power off the NAS and disconnect it from the power source.

WARNING! Before removing any drives, carefully read the device manual. Improper actions may damage both the NAS enclosure and the hard disks in the RAID array.
Remove the hard disks one by one, gently sliding each drive out of its slot. Remember that hard disks are highly sensitive: any impact or drop can cause serious physical damage.
Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.
Connect the drives to your computer. In this video, we explain which ports you can use to connect hard disks and what to do if your PC does not have enough free connectors.

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How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

This program restores data from damaged RAID arrays and is fully compatible with Idis DR-2216P. Each hard disk in the array contains technical metadata describing how files were written. When launched, Hetman RAID Recovery analyzes this metadata, automatically reconstructs the damaged array, and provides access to its contents. After that, you can browse the recovered disk and save your files. The program can also restore files that were accidentally deleted from the network drive.

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How to recover data from a Idis

DR-2216P 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;

How to Safely Recover Data from Disk Images

This utility allows you to create a complete copy of a disk and work with the disk image instead of the physical drive. This approach helps protect your data from:

Overwriting during the recovery process;
Additional data loss caused by bad sectors;
User errors.

To create a disk image, follow these steps:

Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.
In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.
When the Image Creation Wizard opens, select whether you want to save the entire disk or only a specific region. Adjust the settings and click Next.
Choose the directory where the image will be saved. You may select any available disk connected to your PC or upload the image via FTP.

Where Are the User’s Files Actually Stored?

The Idis DR-2216P 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.

RAID Recovery Software: Detailed Comparison

Product	Operating system	RAID controller support	Supported file systems	Virtual RAID controller support	Data recovery from damaged RAID	File preview
Hetman RAID Recovery	Windows, Linux, MacOS	Yes, over 100 controllers	FAT, exFAT, NTFS, ReFS, APFS, HFS+, Ext4, Ext3, Ext2, ReiserFS, Btrfs, VMFS, Hikvision, XFS, UFS, ZFS	Yes	Yes	Yes
DiskInternals RAID Recovery	Windows	Yes, over 10 controllers	FAT, NTFS, Ext2/3/4, HFS+	No	Yes	Yes
R-Studio	Windows, Mac, Linux	Yes, over 20 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes
UFS Explorer RAID Recovery	Windows, Mac, Linux	Yes, over 100 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes
EaseUS Data Recovery	Windows	Yes, over 20 controllers	FAT, NTFS, Ext2/3/4, HFS+	No	Yes	Yes
ReclaiMe Free RAID Recovery	Windows	Yes, over 100 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes

Feedback

We will be happy to answer your questions!

Comments (3)

Hetman Software: Data Recovery 9.08.2022 12:31 #

If you want to ask a question about data recovery, from NAS DR-2216P, feel free to leave a comment!

Reply
Wes Smith 26.08.2023 18:51 #

Is it possible to recover data from a NAS Idis DR-2216P device that has been infected by malware or viruses?

Reply
- Hetman Software 26.08.2023 19:59 #
  Yes, it is possible to recover data from a NAS device that has been infected by malware or viruses. However, the process may vary depending on the severity of the infection and the specific measures taken by the malware.
  Here are some general steps you can take to recover data from an infected NAS device:
  Disconnect the NAS device from the network: This is important to prevent further spread of the malware and to ensure that your data remains secure.
  Scan the NAS device: Use an updated antivirus or antimalware software to scan the NAS device and remove any detected malware or viruses. Make sure to use a reputable and trusted security software.
  Identify the extent of the damage: Assess the impact of the malware on your data. Determine if any files have been encrypted or deleted, and note any changes or modifications made by the malware.
  Restore from backups: If you have regular backups of your data, restore the files from a clean backup source. This is typically the most reliable and secure method to recover your data.
  Seek professional help: If you don't have backups or if the malware has caused extensive damage to your data, consider consulting a professional data recovery service. They have specialized tools and expertise to recover data from infected devices.
  Prevent future infections: Once the data recovery process is complete, take steps to strengthen the security of your NAS device. Update the firmware, apply security patches, and implement strong passwords. Regularly scan for malware and keep your antivirus software up to date.
  Remember, prevention is always better than cure. Regularly backing up your data and implementing robust security measures can help minimize the impact of malware infections and ensure data recovery is easier in the event of an incident.
  Reply

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Updated:
16.10.2025 8:53

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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.

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 xaker.ru, 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 is SSH (Secure Shell) and what is its purpose in network communication?

SSH (Secure Shell) is a cryptographic network protocol that provides a secure way to access and manage remote machines over an unsecured network. It is widely used for secure remote administration of systems and secure file transfers.
The purpose of SSH in network communication is to establish a secure and encrypted connection between two systems, allowing secure remote access and data transfer. It ensures the confidentiality and integrity of data by encrypting all communication between the client and the server. SSH also provides authentication mechanisms to verify the identity of the parties involved in the communication, preventing unauthorized access. It is commonly used by system administrators, developers, and users who need to remotely manage or access systems, as it offers a secure alternative to protocols like Telnet and FTP.
How does the NAS Idis DR-2216P utilize SSH protocol for secure remote access and file transfers?
The NAS Idis DR-2216P utilizes the SSH (Secure Shell) protocol for secure remote access and file transfers by implementing the following mechanisms:
1. Encryption: SSH ensures secure communication by encrypting the data transferred between the client and the server. This prevents unauthorized access or eavesdropping on the network.
2. Authentication: SSH employs various authentication methods to verify the identity of the client connecting to the NAS. This can include password-based authentication, public key authentication, or certificate-based authentication.
3. Secure Remote Access: The NAS supports SSH remote access, allowing users to securely log in to the device remotely using an SSH client. This ensures that the connection is protected from potential attacks or unauthorized access.
4. Secure File Transfers: The NAS supports secure file transfers using the SSH protocol. Users can securely transfer files between the NAS and their local machine using tools like Secure Copy (SCP) or Secure File Transfer Protocol (SFTP). These protocols ensure that the file transfers are encrypted and secure.
Overall, by utilizing the SSH protocol, the NAS Idis DR-2216P provides a secure and encrypted environment for remote access and file transfers, ensuring the confidentiality and integrity of the data exchanged between the client and the NAS.
Can you explain the advantages and security features provided by SSH in the context of NAS systems, specifically in the case of the NAS Idis DR-2216P?
Sure! SSH (Secure Shell) is a network protocol that provides secure remote access to systems over an unsecured network. It offers several advantages and security features when used in the context of NAS (Network Attached Storage) systems, such as the NAS Idis DR-2216P. Here are some key points:
Advantages of SSH in NAS systems:
1. Secure Remote Access: SSH allows users to securely access and manage their NAS system remotely. It establishes an encrypted connection, preventing unauthorized access and protecting data transmission.
2. Data Encryption: SSH encrypts all data transmitted between the client and the NAS system, ensuring that sensitive information, such as login credentials and files, remain secure.
3. Authentication: SSH uses various authentication methods, including password-based authentication and public-key cryptography. This helps ensure that only authorized users can access the NAS system.
4. Portability: SSH is widely supported across different operating systems and platforms. This allows users to access their NAS system from various devices, including Windows, macOS, Linux, and mobile devices.
Security features provided by SSH in NAS systems:
1. Encryption: SSH uses strong encryption algorithms, such as AES (Advanced Encryption Standard), to protect data confidentiality during transmission. This prevents eavesdropping and data interception.
2. Secure File Transfer: SSH includes SFTP (SSH File Transfer Protocol), which provides a secure method for transferring files between the client and the NAS system. SFTP encrypts file transfers, ensuring data integrity and preventing unauthorized access.
3. Two-Factor Authentication (2FA): SSH supports 2FA, which adds an extra layer of security by requiring users to provide two forms of identification, typically a password and a unique verification code. This helps prevent unauthorized access even if the password is compromised.
4. Firewall Friendly: SSH can be configured to use different ports, making it firewall-friendly. It allows administrators to restrict access to the NAS system by allowing SSH traffic only from specific IP addresses or networks.
5. Auditing and Logging: SSH provides detailed logging capabilities, allowing administrators to monitor and track SSH access and activities on the NAS system. This aids in identifying any unauthorized access attempts or suspicious activities.
It's important to note that while SSH provides strong security features, it's crucial to properly configure and update the NAS system, including SSH settings, to ensure maximum security. Additionally, using strong passwords and regularly updating them further enhances the security of the NAS system.