How to Retrieve Accidentally Deleted Files from NAS Lenovo EMC px4-300d

Has your NAS Lenovo EMC px4-300d 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?

How to Retrieve Accidentally Deleted Files from NAS Lenovo EMC px4-300d
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Lenovo EMC px4-300d 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 EMC px4-300d. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

How to Retrieve Accidentally Deleted Files from NAS Lenovo EMC px4-300d

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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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 Lenovo 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.

How can hardware failure lead to data loss in NAS Lenovo EMC px4-300d devices?

Hardware failure in NAS Lenovo EMC px4-300d devices can lead to data loss in several ways:

  1. Hard drive failure: The px4-300d typically uses multiple hard drives in a RAID configuration for data redundancy. If one or more hard drives fail, it can result in data loss or corruption. The failure of a single drive can lead to the loss of data stored on that particular drive, while the failure of multiple drives can result in complete data loss.
  2. Power supply failure: If the power supply unit in the px4-300d fails, it can cause the device to shut down unexpectedly. This sudden power loss can lead to data corruption or loss, especially if any write operations were in progress at the time of the failure.
  3. Controller failure: The controller in the NAS device is responsible for managing data flow between the hard drives and the network. If the controller fails, it can result in data loss or inaccessibility. The failure of the controller can prevent the device from properly reading or writing data, leading to potential data loss.
  4. Fan failure: The px4-300d has built-in cooling fans to prevent overheating of the internal components. If a fan fails or malfunctions, it can lead to excessive heat buildup, which can damage the hard drives or other components. This can result in data loss or corruption.
  5. Network failure: If there is a network failure or connectivity issue with the px4-300d, it can lead to data loss. For example, if the device loses network connectivity while writing or transferring data, it may result in incomplete or corrupted files.

It is important to regularly back up data stored on the px4-300d to minimize the risk of data loss in case of hardware failure. Additionally, implementing a RAID configuration and regularly monitoring the health of the hardware components can help detect and mitigate the risk of data loss.

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

Although the NAS EMC px4-300d 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:

  1. 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.

  2. 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.

  3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

  4. 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.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

Hetman Raid Recovery

This program restores data from damaged RAID arrays and is fully compatible with Lenovo EMC px4-300d. 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.

Go to view
How to recover data from a Lenovo

How to recover data from a Lenovo

EMC px4-300d 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;

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:

  1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

  2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

  3. 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.

    Hetman RAID Recovery: Image Creation Wizard

  4. 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.

    Hetman RAID Recovery: Choose a disk or save the image via FTP

Where Are the User’s Files Actually Stored?

The Lenovo EMC px4-300d 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.

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

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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 EMC px4-300d, feel free to leave a comment!
    Reply
  • Cleve Chase
    Cleve Chase 21.08.2023 18:46 #
    Is it possible to recover data from a NAS Lenovo EMC px4-300d device that has been affected by a virus or malware infection?
    Reply
    • Hetman Software
      Hetman Software 21.08.2023 19:00 #

      Yes, it is possible to recover data from a NAS device that has been affected by a virus or malware infection. However, the success of data recovery depends on various factors such as the severity of the infection, the type of virus or malware, and the extent of damage caused to the data.

      Here are a few steps you can take to attempt data recovery from an infected NAS device:

      1. Isolate the infected device: Disconnect the NAS device from the network to prevent the virus or malware from spreading further.
      2. Scan for viruses or malware: Use antivirus or anti-malware software to scan the NAS device and remove any detected threats. Ensure that the software you use is up to date and capable of scanning network-attached storage devices.
      3. Restore from backups: If you have regular backups of your data, restore the files from a clean backup source. This is often the easiest and most reliable way to recover the data.
      4. Consult professional data recovery services: If you are unable to recover the data on your own, consider contacting professional data recovery services. They have specialized tools and expertise to recover data from various storage devices, including NAS devices.

      Remember to take preventive measures to protect your NAS device from future infections. This includes keeping the device's firmware up to date, using strong passwords, regularly scanning for viruses or malware, and implementing security best practices.

      Reply
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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

  • What are the key features and specifications of the NAS Lenovo EMC px4-300d for personal cloud storage?

    The key features and specifications of the NAS Lenovo EMC px4-300d for personal cloud storage are as follows:

    1. Storage Capacity: The px4-300d is available in different storage capacities, ranging from 4TB to 16TB. It provides ample storage space for personal cloud storage needs.
    2. Drive Bays: It has four drive bays, allowing for easy installation and replacement of hard drives. The bays support both 3.5" and 2.5" SATA hard drives.
    3. Processor and Memory: The NAS is powered by a dual-core Intel Atom processor, providing efficient performance. It also comes with 2GB of RAM for smooth operation.
    4. RAID Support: The px4-300d supports multiple RAID configurations, including RAID 0, 1, 10, 5, and 6. This allows for data redundancy and protection against drive failures.
    5. Connectivity Options: It offers various connectivity options, including Gigabit Ethernet, USB 3.0, and eSATA ports. These ports enable fast data transfer and easy expansion of storage capacity.
    6. Personal Cloud Features: The NAS is designed for personal cloud storage, allowing users to access their data remotely over the internet. It supports remote file access, media streaming, and mobile device synchronization.
    7. Data Protection: The px4-300d includes advanced data protection features like built-in McAfee VirusScan Enterprise, AES 256-bit encryption, and UPS support for power outage protection.
    8. Easy Setup and Management: It features a user-friendly web-based interface for easy setup and management of the NAS. It also supports various management protocols like SNMP, SSH, and HTTPS.
    9. Compatibility: The NAS is compatible with various operating systems, including Windows, Mac, and Linux. It can integrate seamlessly into existing home or office networks.
    10. Scalability: The px4-300d is designed to be scalable, allowing users to easily add additional storage capacity using the available expansion ports.

    Overall, the Lenovo EMC px4-300d offers a robust and feature-rich solution for personal cloud storage, with ample storage capacity, data protection features, and remote access capabilities.

  • How does the Lenovo EMC px4-300d NAS ensure data security and protection for personal cloud storage?

    The Lenovo EMC px4-300d NAS (Network Attached Storage) ensures data security and protection for personal cloud storage through several mechanisms:

    1. RAID Protection: The NAS supports various RAID configurations, including RAID 1, 5, 6, and 10. These RAID levels provide redundancy by distributing data across multiple hard drives, ensuring that even if one drive fails, the data remains intact.
    2. Data Encryption: The px4-300d NAS supports AES 256-bit encryption, which secures data at rest. This encryption ensures that even if someone gains unauthorized access to the physical drives, the data remains encrypted and inaccessible.
    3. User Authentication: The NAS supports user authentication mechanisms such as LDAP, Active Directory, and local user accounts. This ensures that only authorized users can access the data stored on the NAS.
    4. Access Control: The px4-300d NAS allows administrators to set granular access controls, defining who can access specific folders or files. This helps prevent unauthorized access to sensitive data.
    5. Antivirus and Antimalware Protection: The NAS can be configured to scan files for viruses and malware, providing an additional layer of protection against malicious threats.
    6. Data Backup and Replication: The NAS supports various backup and replication options, allowing users to create multiple copies of their data. This protects against data loss due to hardware failure, accidental deletion, or other unforeseen events.
    7. Snapshot Technology: The px4-300d NAS supports snapshot technology, which allows users to take point-in-time copies of their data. These snapshots can be used to recover files or folders to a previous state, providing an additional layer of data protection.
    8. Remote Access and Secure File Sharing: The NAS provides secure remote access capabilities, enabling users to access their data from anywhere. It also offers secure file sharing options, allowing users to share files with others while maintaining control over access rights.

    Overall, the Lenovo EMC px4-300d NAS incorporates various security features and measures to ensure data security and protection for personal cloud storage.

  • Can you provide some insights into the setup process and user experience of using the Lenovo EMC px4-300d NAS for personal cloud storage?

    The Lenovo EMC px4-300d NAS is a network-attached storage device designed for personal cloud storage. Here are some insights into its setup process and user experience:

    1. Hardware Setup: The first step is to physically connect the NAS to your network and power it on. The device typically comes with pre-installed hard drives, but if you have purchased the diskless version, you will need to install the drives yourself. The NAS usually has a user-friendly design with accessible drive bays and easy installation procedures.
    2. Initial Configuration: Once the hardware is set up, you will need to access the NAS's web-based interface through a computer connected to the same network. The NAS typically has a default IP address that you can enter into a web browser to access the setup wizard. The wizard will guide you through configuring basic settings such as network connectivity, user accounts, and RAID configuration.
    3. Personal Cloud Setup: The Lenovo EMC px4-300d NAS offers personal cloud functionality, allowing you to access your files remotely over the internet. To set up the personal cloud, you will need to create an account with the NAS manufacturer's cloud service (such as LenovoEMC Personal Cloud or similar). This involves registering the device and creating a unique username and password.
    4. User Interface: The user interface of the Lenovo EMC px4-300d NAS is typically intuitive and user-friendly. It provides a dashboard view that allows you to monitor the status of the device, such as storage usage, network connectivity, and system health. The interface also provides access to various settings and features, such as file sharing, backup configurations, and media streaming.
    5. File Management: The NAS allows you to create shared folders and assign user permissions, enabling you to easily manage and organize your files. You can access these shared folders from any device connected to the network, allowing for seamless file sharing and collaboration among multiple users.
    6. Data Protection: The px4-300d NAS supports RAID configurations, which provide data redundancy and protection against drive failures. You can choose different RAID levels depending on your needs, such as RAID 0, 1, 5, 6, or 10. The NAS also offers various backup options, including scheduled backups to external drives or cloud services.
    7. Mobile Apps: Lenovo EMC provides mobile apps for iOS and Android devices, allowing you to access your personal cloud storage on the go. These apps provide a user-friendly interface for managing and accessing files, as well as streaming media directly from the NAS to your mobile device.

    Overall, the Lenovo EMC px4-300d NAS offers a straightforward setup process and a user-friendly experience for personal cloud storage. Its intuitive interface, data protection features, and mobile apps make it a convenient solution for individuals looking to create their own personal cloud storage system.
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