Steps to Recover Your NAS QNAP REXP-1620U-RP RAID Array: Key Recovery Tips When It Breaks

Facing a broken ⭐ NAS RAID array? Stay calm and follow these steps to recover your data and restore system performance.

Steps to Recover Your NAS QNAP REXP-1620U-RP RAID Array: Key Recovery Tips When It Breaks

QNAP REXP-1620U-RP NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from REXP-1620U-RP.

Steps to Recover Your NAS QNAP REXP-1620U-RP RAID Array: Key Recovery Tips When It Breaks

RAID Recovery™ 2.6
Recover data from damaged RAID arrays inaccessible from a computer.
Download

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 QNAP 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 limitations or restrictions on file or folder names that can cause potential data loss on NAS QNAP REXP-1620U-RP devices?

Yes, there are certain limitations and restrictions on file and folder names that can potentially cause data loss on NAS QNAP REXP-1620U-RP devices. Some of these limitations include:

  1. Length Limitations: The maximum length for a file or folder name is 255 characters. If a file or folder name exceeds this limit, it may cause issues during file operations and can potentially result in data loss.
  2. Character Restrictions: Certain special characters are not allowed in file or folder names, such as / : * ? " < > |. Using these characters in a file or folder name can lead to data loss or corruption.
  3. Case Sensitivity: QNAP NAS devices are case-sensitive, so using different cases for the same file or folder name can result in duplicate files or folders, leading to confusion and potential data loss.
  4. Reserved Names: There are certain reserved names that cannot be used for files or folders, such as CON, PRN, AUX, NUL, COM1, COM2, COM3, etc. Using these reserved names can cause data loss or system errors.

It is important to follow these limitations and restrictions while naming files and folders on QNAP NAS devices to avoid potential data loss issues.

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

Although NAS REXP-1620U-RP 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 QNAP REXP-1620U-RP. 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 QNAP

How to recover data from a QNAP

REXP-1620U-RP has 16 HDD slots, and it supports the following array types:

  • RAID 50;
  • RAID 60;
  • RAID 6;
  • RAID 5;
  • RAID 10;
  • RAID 0;
  • RAID 1;
  • JBOD;

NAS supports:

  • ZFS;
  • EXT4;
  • EXT3;
  • exFAT;
  • FAT32 (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 QNAP REXP-1620U-RP network-attached storage keeps QTS (QuTS hero) 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

Feedback

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 REXP-1620U-RP, feel free to leave a comment!
  • Micah Haywood
    Micah Haywood 15.09.2023 12:43 #
    Is it possible to recover data from a NAS QNAP REXP-1620U-RP device that has suffered a power loss or sudden shutdown?
    • Hetman Software
      Hetman Software 15.09.2023 12:59 #

      Yes, it is possible to recover data from a NAS QNAP REXP-1620U-RP device that has suffered a power loss or sudden shutdown. However, the success of data recovery depends on various factors such as the extent of damage to the device, the type of data storage configuration (RAID level), and the expertise of the data recovery professionals.

      In case of a power loss or sudden shutdown, it is recommended to follow these steps:

      1. Power off the NAS device immediately to prevent further damage.
      2. Do not attempt to restart the device or perform any DIY data recovery methods, as it may lead to permanent data loss.
      3. Contact a professional data recovery service provider with experience in recovering data from QNAP NAS devices.
      4. Provide all the necessary details about the device, including the model, RAID configuration, and any other relevant information.
      5. The data recovery professionals will assess the situation and determine the best course of action to recover the data.

      It is important to note that data recovery from a NAS device can be a complex and time-consuming process. Therefore, it is always recommended to have regular backups of important data to avoid such situations.

Post comment
User
Leave a reply
Your email address will not be published. Required fields are marked *

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 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.

Share

Questions and answers

  • How do I configure the RAID settings on the QNAP REXP-1620U-RP NAS?

    To configure the RAID settings on the QNAP REXP-1620U-RP NAS, follow these steps:

    1. Connect the expansion unit to the QNAP NAS using the SAS cable.
    2. Power on the expansion unit and wait for it to initialize.
    3. Log in to the QTS (QNAP NAS operating system) web interface.
    4. Go to "Storage & Snapshots" and then "Storage Manager."
    5. Click on "Expand RAID Enclosure" to start the setup wizard.
    6. Select the expansion unit from the list and click "Next."
    7. Choose the RAID level you want to configure (e.g., RAID 0, RAID 1, RAID 5, RAID 6, etc.) and click "Next."
    8. Select the disks you want to include in the RAID configuration and click "Next."
    9. Review the summary of the RAID configuration and click "Apply."
    10. Wait for the RAID configuration to complete. This process may take some time, depending on the size and number of disks.
    11. Once the RAID configuration is finished, you can create volumes and configure other settings as needed.

    Note: It's important to ensure that you have a backup of your data before configuring RAID settings, as the process may involve data loss if not done correctly.

  • What are the recommended network settings for optimal performance on the QNAP REXP-1620U-RP NAS?

    To achieve optimal performance on the QNAP REXP-1620U-RP NAS, it is recommended to configure the following network settings:

    1. Network Interface: Connect the NAS to a high-speed network interface, such as a Gigabit Ethernet (GbE) or 10GbE port. This ensures fast data transfer rates between the NAS and connected devices.
    2. Link Aggregation: If your network infrastructure supports it, enable link aggregation (also known as port trunking or bonding) on the NAS. This allows you to combine multiple network interfaces into a single logical interface, increasing bandwidth and providing redundancy.
    3. Jumbo Frames: Enable jumbo frames on the NAS and the connected devices, such as switches and network adapters, if supported. Jumbo frames increase the maximum transmission unit (MTU) size, reducing the overhead and improving data transfer efficiency.
    4. Quality of Service (QoS): Configure QoS settings on the NAS to prioritize network traffic. This ensures that critical applications and services receive sufficient bandwidth and reduces the impact of network congestion on performance.
    5. Network Switch: Use a high-quality network switch that supports the required network speeds and features. Ensure that the switch is properly configured to handle the network traffic and provides sufficient bandwidth to the NAS.
    6. Network Cables: Use high-quality Ethernet cables, preferably Cat 6 or higher, to ensure reliable and fast data transmission between the NAS and connected devices.
    7. IP Configuration: Assign a static IP address to the NAS instead of relying on DHCP. This ensures that the NAS always has a consistent IP address, making it easier to access and manage.
    8. Firewall and Security: Configure appropriate firewall rules and security settings to protect the NAS from unauthorized access and ensure network security.

    It is also recommended to regularly update the firmware of the NAS and any connected devices to ensure that you have the latest features, bug fixes, and security patches.

  • Can you provide step-by-step instructions for setting up iSCSI on the QNAP REXP-1620U-RP NAS?

    Sure! Here are step-by-step instructions for setting up iSCSI on the QNAP REXP-1620U-RP NAS:

    1. Connect the QNAP REXP-1620U-RP NAS to your network and power it on.
    2. Open a web browser on your computer and enter the IP address of the NAS to access the QNAP web interface.
    3. Log in to the QNAP web interface using your admin credentials.
    4. Once logged in, click on "Storage & Snapshots" on the left-hand menu.
    5. In the Storage & Snapshots menu, click on "iSCSI & Fibre Channel" under the "Storage" section.
    6. Click on the "iSCSI Target" tab.
    7. Click on the "Create" button to create a new iSCSI target.
    8. In the "Create iSCSI Target" window, enter a name for the iSCSI target and configure the settings as per your requirements.
    9. Click on the "Next" button.
    10. In the "Create iSCSI LUN" window, click on the "Create LUN" button to create a new LUN (Logical Unit Number) for the iSCSI target.
    11. Enter a name for the LUN and configure the settings such as capacity, block size, and thin provisioning as per your requirements.
    12. Click on the "Next" button.
    13. In the "Select iSCSI target" window, select the iSCSI target you created in step 8.
    14. Click on the "Next" button.
    15. In the "Select iSCSI LUN" window, select the LUN you created in step 10.
    16. Click on the "Next" button.
    17. In the "Configure iSCSI initiator" window, select the appropriate options for the iSCSI initiator, such as authentication and access permissions.
    18. Click on the "Next" button.
    19. In the "Review" window, review the settings you have configured for the iSCSI target and LUN.
    20. If everything looks correct, click on the "Apply" button to create the iSCSI target and LUN.
    21. Once the iSCSI target and LUN are created, you can connect to them from your iSCSI initiator (such as a server or workstation).
    22. On your iSCSI initiator, configure the iSCSI initiator software to connect to the iSCSI target using the IP address or hostname of the QNAP NAS.
    23. Once connected, you can use the iSCSI target as a block-level storage device on your iSCSI initiator.

    That's it! You have successfully set up iSCSI on the QNAP REXP-1620U-RP NAS.

Hello! This is AI-based Hetman Software virtual assistant, and it will answer any of your questions right away.
Start Chat