How to recover data from Lenovo EMC px4-400d 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?

Recovering Lost Data from NAS Lenovo EMC px4-400d: Tips and Tricks

Lenovo EMC px4-400d NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from EMC px4-400d.

Recovering Lost Data from NAS Lenovo EMC px4-400d: Tips and Tricks

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 Lenovo 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 Lenovo EMC px4-400d devices?

Quality of Service (QoS) settings can have a significant impact on data transfer reliability on NAS Lenovo EMC px4-400d devices. Here are a few ways QoS settings can affect data transfer reliability:

  1. Bandwidth Allocation: QoS settings allow you to allocate bandwidth to different applications or services on the NAS. By prioritizing critical data transfers or applications, you can ensure that they receive the necessary bandwidth for reliable data transfer. This helps to prevent congestion and ensures smooth data transmission.
  2. Traffic Prioritization: QoS settings enable you to prioritize specific types of traffic, such as video streaming or file transfers, over less critical traffic. By giving higher priority to important data transfers, you can ensure that they are not affected by other lower-priority activities, improving reliability.
  3. Traffic Shaping: QoS settings allow you to shape the traffic flow by limiting the bandwidth for certain applications or services. By setting appropriate limits, you can prevent any single application from monopolizing the available bandwidth, which can lead to data transfer issues. This helps to maintain a balanced and reliable data transfer environment.
  4. Latency Management: QoS settings can help manage latency, which is the delay between sending and receiving data. By prioritizing latency-sensitive applications, such as real-time video streaming or VoIP, you can minimize delays and ensure reliable data transfer.
  5. Packet Prioritization: QoS settings allow you to prioritize certain packets over others based on their importance. By giving higher priority to critical packets, such as those related to data transfer integrity or error correction, you can enhance the reliability of data transfers.

Overall, by properly configuring QoS settings on NAS Lenovo EMC px4-400d devices, you can optimize data transfer reliability by ensuring that critical applications receive the necessary resources and are not affected by less important activities.

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

Although NAS EMC px4-400d 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 Lenovo EMC px4-400d. 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 Lenovo

How to recover data from a Lenovo

EMC px4-400d has 4 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • 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 Lenovo EMC px4-400d network-attached storage keeps LifeLine 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


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 EMC px4-400d, feel free to leave a comment!
  • Vernon Livings
    Vernon Livings 21.08.2023 18:46 #
    Can data recovery from a NAS Lenovo EMC px4-400d device be done if the device is not booting or not starting up properly?
    • Hetman Software
      Hetman Software 21.08.2023 18:59 #

      Yes, it is possible to recover data from a NAS Lenovo EMC px4-400d device even if the device is not booting or starting up properly. However, the process may vary depending on the specific issue causing the device to not boot. Here are a few steps you can try:

      1. Check the power supply: Ensure that the power adapter is working properly and providing enough power to the device. Try using a different power outlet or a different power adapter if available.
      2. Check the network connection: Make sure the network cable is securely connected to the NAS device and the router or switch. Try using a different network cable or port to rule out any network issues.
      3. Reset the device: Most NAS devices have a reset button or a pinhole that can be used to reset the device to its factory settings. Refer to the user manual or the manufacturer's website for instructions on how to perform a reset.
      4. Remove and reconnect hard drives: If the device is not booting due to a hard drive issue, you can try removing the hard drives from the NAS and reconnecting them one by one. This can help identify if a specific drive is causing the problem.
      5. Seek professional help: If the above steps do not resolve the issue and you still need to recover data from the NAS device, it is recommended to seek professional data recovery services. These services have specialized tools and expertise to recover data from faulty NAS devices.

      Remember to always have a backup of your important data to avoid data loss in such situations.

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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

  • How does the NAS Lenovo EMC px4-400d enhance the gaming experience on a game console?

    The NAS Lenovo EMC px4-400d does not directly enhance the gaming experience on a game console. It is a network-attached storage (NAS) device designed for data storage and backup purposes.

    However, it can indirectly contribute to a better gaming experience by providing a centralized storage solution for game installations, updates, and backups. With its large storage capacity, the px4-400d can store a significant number of games, reducing the need to delete and reinstall games frequently.

    Additionally, the NAS can offer fast data transfer speeds, allowing for quick access to game files and reducing loading times. This can result in smoother gameplay and faster loading screens.

    Moreover, the px4-400d can provide reliable data backup and recovery options, ensuring that game saves and progress are protected in case of hardware failures or accidental deletion.

    Overall, while the NAS itself may not directly enhance the gaming experience, it can improve storage management, data accessibility, and backup capabilities, which can indirectly contribute to a better gaming experience on a console.

  • What are the key features and specifications of the NAS Lenovo EMC px4-400d that make it suitable for game console storage?

    The Lenovo EMC px4-400d NAS (Network Attached Storage) is a versatile storage solution that can be suitable for game console storage due to the following key features and specifications:

    1. Storage Capacity: The px4-400d comes with four drive bays, allowing for up to four hard drives to be installed. This provides ample storage capacity for storing game files, downloadable content, and game backups.
    2. High Performance: This NAS is equipped with a powerful Intel Atom dual-core processor, which ensures fast and efficient data transfer rates. This high performance is crucial for game console storage as it allows for quick access to game files, reducing load times and improving overall gaming experience.
    3. RAID Support: The px4-400d supports RAID configurations (RAID 0, 1, 5, 10) which offer data redundancy and increased reliability. RAID configurations protect against data loss in case of drive failure, which is important for preserving game data and preventing potential loss of progress.
    4. Remote Access and Media Streaming: The NAS supports remote access, allowing users to access their game files and media from anywhere using a computer or mobile device. This feature enables users to stream games or media directly to their game consoles, eliminating the need for physical storage on the console itself.
    5. Expandability: The px4-400d supports expansion units, allowing for additional drive bays to be added if more storage capacity is required in the future. This expandability is beneficial for game console storage as it accommodates the increasing size of modern games and downloadable content.
    6. User-Friendly Interface: The NAS features a user-friendly interface that makes it easy to set up and manage the storage system. This simplicity is important for gamers who may not have extensive technical knowledge but still want a reliable storage solution for their game consoles.

    Overall, the Lenovo EMC px4-400d NAS offers a combination of storage capacity, performance, data protection, and remote access capabilities that make it suitable for game console storage.

  • Can the NAS Lenovo EMC px4-400d be easily integrated with different game consoles, and what are the benefits of using it for game storage and backup?

    The NAS Lenovo EMC px4-400d can be easily integrated with different game consoles. It supports common file sharing protocols such as SMB, NFS, and FTP, which are compatible with most game consoles. By connecting the NAS to your home network, you can access and store game data from multiple consoles.

    There are several benefits to using the Lenovo EMC px4-400d for game storage and backup:

    1. Increased storage capacity: The NAS offers multiple drive bays, allowing you to expand storage capacity as per your requirements. This is beneficial for gamers who have a large collection of games and need ample space to store them.
    2. Centralized game library: With the NAS, you can create a centralized game library where you can store all your games. This makes it convenient to access and play games from any connected console, without the need to switch physical game discs.
    3. Faster load times: By storing games on the NAS, you can take advantage of its high-speed network connectivity. This can result in faster load times compared to using the console's internal storage or external hard drives.
    4. Data backup and protection: The NAS provides built-in data protection features such as RAID configurations and backup software. This ensures that your game data is safeguarded against hardware failures or accidental deletions. You can easily set up automated backups to protect your game progress and save files.
    5. Remote access and sharing: The NAS allows remote access to your game library, enabling you to play games or access game data from anywhere with an internet connection. Additionally, you can share your game library with friends or family members, allowing them to access and play games stored on the NAS.

    Overall, the Lenovo EMC px4-400d NAS offers convenience, scalability, data protection, and remote access capabilities, making it a suitable choice for game storage and backup.

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