How to recover data from Instek AS5416-3U 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 Instek AS5416-3U

Instek AS5416-3U NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from AS5416-3U.

How to recover data from NAS Instek AS5416-3U

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 Instek 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 RAID (Redundant Array of Independent Disks) configurations impact data loss in NAS Instek AS5416-3U devices?

RAID configurations can have a significant impact on data loss in NAS Instek AS5416-3U devices. Here are a few ways RAID can affect data loss in these devices:

  1. Redundancy: RAID configurations, such as RAID 1 (mirroring) or RAID 5 (striping with parity), provide redundancy by distributing data across multiple disks. If one disk fails, the redundant data on other disks can be used to rebuild the lost data. This helps in minimizing data loss due to disk failures.
  2. Fault tolerance: RAID configurations enhance fault tolerance by allowing the system to continue functioning even if one or more disks fail. The NAS device can still serve data from the remaining disks, ensuring minimal downtime and reducing the risk of data loss.
  3. Data recovery: In case of disk failures, RAID configurations provide options for data recovery. For example, RAID 5 can rebuild the lost data by using the parity information stored on other disks. This helps in recovering data without the need for a complete backup, minimizing data loss.
  4. Performance impact: Depending on the RAID configuration, there can be a performance impact on the NAS device. RAID 1, for example, provides redundancy but doesn't offer performance improvements, while RAID 5 offers both redundancy and improved read performance. It's essential to choose a RAID configuration that balances performance and data protection needs.
  5. RAID controller failure: While RAID configurations can protect against individual disk failures, they may not safeguard against RAID controller failures. If the RAID controller fails, it can lead to data loss or make data inaccessible. It's important to ensure the RAID controller is reliable and has proper backup mechanisms in place to mitigate such risks.

Overall, RAID configurations in NAS Instek AS5416-3U devices can significantly reduce the risk of data loss due to disk failures, enhance fault tolerance, and provide options for data recovery. However, it's crucial to regularly monitor the health of the RAID array, maintain backups, and ensure the RAID controller is reliable to minimize the chances of data loss.

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

Although NAS AS5416-3U 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 Instek AS5416-3U. 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 Instek

How to recover data from a Instek

AS5416-3U has 12 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 50;
  • RAID 60;
  • 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 Instek AS5416-3U 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

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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 AS5416-3U, feel free to leave a comment!
  • Jeff Upton
    Jeff Upton 8.09.2023 23:42 #
    Can data recovery from a NAS Instek AS5416-3U device be done if the storage disks have been physically removed or replaced?
    • Hetman Software
      Hetman Software 8.09.2023 23:59 #

      If the storage disks have been physically removed or replaced from a NAS (Network Attached Storage) device, data recovery becomes more challenging. The ability to recover data will depend on several factors:

      1. RAID Configuration: If the NAS device uses a RAID configuration (such as RAID 0, RAID 1, RAID 5, etc.), the data may still be recoverable even if the disks have been replaced. In this case, the NAS device should be able to rebuild the RAID array using the new disks, and the data can potentially be recovered.
      2. Data Fragmentation: If the data on the disks has been fragmented or overwritten, it may be more difficult or even impossible to recover. If the NAS device has been using an overwrite or secure erase feature, the chances of recovery will be significantly reduced.
      3. Disk Imaging: If the original disks are no longer available, it may be necessary to create disk images of the new disks and work with those images during the recovery process. This can be more complex and time-consuming.
      4. Professional Data Recovery Services: In cases where the data is critical and valuable, it is recommended to seek professional data recovery services. These services have specialized tools and expertise to deal with complex data recovery scenarios, including cases where disks have been replaced.

      It's important to note that data recovery success cannot be guaranteed, especially in cases where disks have been replaced or data has been overwritten. It is always recommended to consult with a professional data recovery service for the best chance of recovering your data.

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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 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.

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Questions and answers

  • Which operating systems are compatible with the NAS Instek AS5416-3U?

    The NAS Instek AS5416-3U is a network-attached storage device and does not have any specific operating system requirements. It is compatible with various operating systems that support network file sharing protocols such as SMB (Server Message Block) or NFS (Network File System).

    Common operating systems that can access and utilize the NAS Instek AS5416-3U include:

    1. Windows: Windows 10, Windows 8/8.1, Windows 7, Windows Server 2019, Windows Server 2016, Windows Server 2012, etc.
    2. macOS: macOS Catalina, macOS Mojave, macOS High Sierra, macOS Sierra, etc.
    3. Linux: Ubuntu, Fedora, CentOS, Debian, etc.
    4. Unix: FreeBSD, OpenBSD, Solaris, etc.

    These are just some examples, and in general, any operating system with network file sharing capabilities can access and use the NAS Instek AS5416-3U.

  • What are the supported operating systems for the NAS Instek AS5416-3U?

    The NAS Instek AS5416-3U supports the following operating systems:

    1. Windows Server 2012 R2
    2. Windows Server 2016
    3. Windows Server 2019
    4. CentOS 7.5 or later
    5. Ubuntu 16.04 LTS or later
    6. Red Hat Enterprise Linux 7.5 or later
    7. SUSE Linux Enterprise Server 12 SP3 or later

    Please note that this information is based on the available documentation at the time of writing and it is always recommended to check with the manufacturer or official sources for the most up-to-date information on supported operating systems.

  • Can you provide a list of operating systems that can be installed on the NAS Instek AS5416-3U?

    The NAS Instek AS5416-3U is a network-attached storage device, which typically runs on a specialized operating system designed for NAS devices. However, if you are looking for a list of compatible operating systems that can be installed on this particular model, it is important to note that NAS devices usually come with a pre-installed operating system that is specific to the manufacturer.

    In the case of the NAS Instek AS5416-3U, it is likely to come with its own proprietary operating system or a customized version of a popular NAS operating system like FreeNAS, QNAP QTS, Synology DiskStation Manager (DSM), or Asustor ADM.

    To determine the exact operating system that comes with the NAS Instek AS5416-3U, it is recommended to refer to the product documentation, user manual, or contact the manufacturer for more information.

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