How to recover data from Lenovo EMC px4-400r 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 Lenovo EMC px4-400r

Lenovo EMC px4-400r 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 px4-400r.

How to recover data from NAS Lenovo EMC px4-400r

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.

Are there any data storage capacity limitations that can impact data loss risks for NAS Lenovo EMC px4-400r devices?

Yes, there are data storage capacity limitations that can impact data loss risks for NAS Lenovo EMC px4-400r devices. Some of these limitations include:

  1. Physical storage capacity: The Lenovo EMC px4-400r devices have a limited number of hard drive bays, which determines the maximum physical storage capacity. If the device reaches its maximum capacity and there are no available bays to add more hard drives, there is a risk of data loss if there is no backup or data management strategy in place.
  2. RAID configuration: The Lenovo EMC px4-400r supports various RAID configurations, such as RAID 0, RAID 1, RAID 5, and RAID 10. Each RAID level has its own limitations and potential risks. For example, RAID 0 offers high performance but provides no data redundancy, so a single drive failure can result in data loss. RAID 5 provides data redundancy by distributing parity information across multiple drives, but if multiple drives fail before the failed drive is replaced, data loss can occur.
  3. Firmware and software limitations: The device's firmware and software may have limitations on the maximum supported storage capacity or the number of drives that can be connected. It is important to check the device's specifications and ensure that it can handle the desired storage capacity.
  4. Backup and data management strategy: Regardless of the device's storage capacity, having a proper backup and data management strategy is crucial to mitigate the risk of data loss. Regular backups, offsite backups, and redundancy measures should be implemented to protect against hardware failures, human errors, and other potential risks.

Overall, it is important to consider the storage capacity limitations and implement appropriate data management practices to minimize the risk of data loss for NAS Lenovo EMC px4-400r devices.

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

Although NAS EMC px4-400r 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.

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    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 px4-400r. 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.

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How to recover data from a Lenovo

How to recover data from a Lenovo

EMC px4-400r 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 px4-400r 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 px4-400r, feel free to leave a comment!
  • Tucker Collings
    Tucker Collings 21.08.2023 15:56 #
    Is it possible to recover data from a NAS Lenovo EMC px4-400r device that has been affected by a power surge or electrical malfunction?
    • Hetman Software
      Hetman Software 21.08.2023 17:00 #

      It is possible to recover data from a NAS device that has been affected by a power surge or electrical malfunction, but the success of the recovery depends on the extent of the damage.

      In cases of power surges or electrical malfunctions, the NAS device's internal components may be damaged, including the hard drives where the data is stored. If the hard drives are not severely damaged, data recovery specialists may be able to recover the data by repairing or replacing the damaged components.

      However, if the damage is extensive and the hard drives are severely affected, data recovery may be more challenging or even impossible. In such cases, it is recommended to consult with professional data recovery services who have the expertise and specialized equipment to recover data from damaged storage devices.

      It is important to note that attempting DIY data recovery methods without proper knowledge and tools can potentially cause further damage and make the recovery process more difficult.

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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 capabilities of the Lenovo EMC px4-400r NAS that make it suitable for use as central storage?

    The Lenovo EMC px4-400r NAS has several key features and capabilities that make it suitable for use as central storage:

    1. High storage capacity: The px4-400r NAS is available in different storage capacities, ranging from 4TB to 24TB. This high storage capacity allows for the consolidation of data from multiple devices and users into a single centralized location.
    2. RAID support: The NAS supports various RAID configurations, including RAID 0, 1, 10, 5, and 6. This ensures data redundancy and protection against drive failures, enhancing the reliability and availability of the central storage system.
    3. Scalability: The px4-400r NAS is designed to be easily expandable, allowing for additional storage capacity to be added as needed. This scalability feature makes it suitable for growing businesses or organizations that require a flexible and future-proof central storage solution.
    4. Advanced data protection: The NAS offers advanced data protection features, such as snapshot technology and replication capabilities. Snapshots allow for point-in-time recovery of data, while replication enables data to be replicated to another NAS device for disaster recovery purposes.
    5. High-performance hardware: The px4-400r NAS is equipped with a powerful Intel processor and ample memory, ensuring fast and efficient data processing. This high-performance hardware enables quick access to data stored on the central storage system, enhancing productivity and workflow efficiency.
    6. Multiple data access protocols: The NAS supports various data access protocols, including SMB/CIFS, NFS, FTP, and HTTP/HTTPS. This compatibility with different protocols allows for seamless integration with a wide range of devices and operating systems, ensuring easy access to centralized data.
    7. Robust security features: The px4-400r NAS offers comprehensive security features, including user and group-level access controls, Active Directory integration, and data encryption. These security measures protect sensitive data stored on the central storage system from unauthorized access and ensure compliance with data privacy regulations.
    8. Remote management and monitoring: The NAS can be managed and monitored remotely through a web-based interface or mobile apps. This remote management capability allows IT administrators to easily configure and monitor the central storage system from anywhere, simplifying maintenance and troubleshooting tasks.

    Overall, the Lenovo EMC px4-400r NAS combines high storage capacity, scalability, advanced data protection, performance, security, and remote management capabilities, making it a suitable choice for organizations looking for a reliable and efficient central storage solution.

  • How does the Lenovo EMC px4-400r NAS ensure data security and protection for centralized storage?

    The Lenovo EMC px4-400r NAS (Network Attached Storage) provides several features to ensure data security and protection for centralized storage. Some of these features include:

    1. RAID Protection: The px4-400r supports various RAID levels (such as RAID 0, 1, 5, 6, and 10), which provide redundancy and data protection against drive failures. RAID technology distributes data across multiple drives, ensuring that even if one drive fails, the data can still be accessed and recovered.
    2. Data Encryption: The NAS supports AES 256-bit volume-based encryption, which encrypts the data stored on the drives. This ensures that even if the drives are physically stolen or accessed by unauthorized individuals, the data remains encrypted and inaccessible without the encryption key.
    3. User Access Controls: The px4-400r allows for granular user access controls and permissions. Administrators can create user accounts, assign specific access rights, and control who can access and modify the data stored on the NAS. This helps prevent unauthorized access and ensures only authorized users can access the data.
    4. Active Directory Integration: The NAS can integrate with existing Active Directory (AD) services, allowing administrators to leverage existing user accounts and permissions. This simplifies user management and ensures consistent access controls across the network.
    5. Data Replication and Backup: The px4-400r supports data replication to another NAS device, either locally or remotely. This allows for automatic and scheduled backups of the data, ensuring that even if one NAS fails, the data can be recovered from the replicated copy.
    6. Snapshot Technology: The NAS supports snapshot technology, which captures point-in-time copies of the data. Snapshots can be used for quick recovery in case of accidental file deletion or modification. Snapshots can also be replicated to another NAS for additional data protection.
    7. Antivirus and Antimalware Integration: The NAS can integrate with antivirus and antimalware software to scan the data for potential threats. This helps prevent the storage and distribution of malicious files, ensuring the integrity and security of the stored data.

    Overall, the Lenovo EMC px4-400r NAS provides a combination of hardware and software features to ensure data security and protection for centralized storage.

  • Can you provide examples of industries or businesses that can benefit from using the Lenovo EMC px4-400r NAS as their central storage solution?

    The Lenovo EMC px4-400r NAS can be beneficial for various industries and businesses that require efficient and reliable central storage solutions. Here are some examples:

    1. Small and Medium-sized Businesses (SMBs): SMBs with limited IT resources can benefit from the Lenovo EMC px4-400r NAS as it provides a cost-effective and easy-to-manage storage solution for their data storage needs.
    2. Creative Agencies: Advertising agencies, design studios, and other creative businesses often deal with large file sizes due to graphics, videos, and other media. The Lenovo EMC px4-400r NAS offers ample storage capacity and high-speed data transfer, making it suitable for these industries.
    3. Media and Entertainment: Media production companies, video editing studios, and broadcasting organizations require a robust storage solution to store and manage their vast collections of high-definition videos, audio files, and other media assets. The Lenovo EMC px4-400r NAS can handle the demanding storage requirements of these industries.
    4. Educational Institutions: Schools, colleges, and universities generate a significant amount of data, including research papers, student records, and multimedia content. The Lenovo EMC px4-400r NAS can serve as a centralized storage solution for educational institutions, allowing easy access and secure storage of data.
    5. Healthcare and Medical Facilities: Hospitals, clinics, and medical research facilities deal with sensitive patient data, medical images, and research files. The Lenovo EMC px4-400r NAS provides a secure and scalable storage solution that complies with data privacy regulations.
    6. Architecture and Engineering Firms: Architecture and engineering companies often work with large design files, blueprints, and CAD drawings. The Lenovo EMC px4-400r NAS offers high-performance storage and collaboration capabilities, enabling seamless file sharing and version control.
    7. Financial Services: Banks, insurance companies, and financial institutions handle vast amounts of sensitive financial data. The Lenovo EMC px4-400r NAS provides a secure and reliable storage solution for storing financial records, customer information, and transaction data.
    8. Retail and E-commerce: Retailers and e-commerce businesses generate significant amounts of sales and customer data. The Lenovo EMC px4-400r NAS can serve as a central repository for storing inventory records, customer databases, and transaction histories.

    These are just a few examples, and the Lenovo EMC px4-400r NAS can be beneficial for any organization that requires efficient, scalable, and secure central storage for their data.

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