How to Recover Data from NAS Lenovo ThinkEdge SE450 Edge Server After Accidental Deletion

Don't let deleted data on your ⭐ NAS cause panic. Our guide will help you restore it with ease.

How to Recover Data from NAS Lenovo ThinkEdge SE450 Edge Server After Accidental Deletion

Lenovo ThinkEdge SE450 Edge Server NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from ThinkEdge SE450 Edge Server.

How to Recover Data from NAS Lenovo ThinkEdge SE450 Edge Server After Accidental Deletion

RAID Recovery™ 2.6
Recover data from damaged RAID arrays inaccessible from a computer.
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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 a NAS Lenovo ThinkEdge SE450 Edge Server device's cache settings impact data loss risks?

The cache settings of a NAS (Network Attached Storage) device such as the Lenovo ThinkEdge SE450 Edge Server can impact data loss risks in the following ways:

  1. Write Cache: The write cache is a temporary storage area where data is stored before being written to the actual storage media. If the write cache is enabled, it can improve performance by allowing the server to acknowledge write operations before they are fully completed. However, if there is a power loss or system failure before the data is written from the cache to the storage media, there is a risk of data loss or corruption. Therefore, it is important to ensure that the write cache is properly configured and that appropriate backup and UPS (Uninterruptible Power Supply) measures are in place to minimize the risk.
  2. Read Cache: The read cache stores frequently accessed data in a faster storage medium, such as solid-state drives (SSDs), to accelerate read operations. While the read cache can significantly improve performance, it does not directly impact data loss risks. However, it is worth noting that if the read cache becomes corrupted or fails, it may affect the availability of data, potentially leading to data loss if not addressed promptly.
  3. RAID Configuration: The ThinkEdge SE450 Edge Server supports various RAID (Redundant Array of Independent Disks) configurations, which involve distributing data across multiple drives for redundancy and improved performance. The choice of RAID configuration can impact data loss risks. For example, RAID 0 offers improved performance but provides no data redundancy, meaning that the failure of a single drive can result in complete data loss. On the other hand, RAID 1 or RAID 5 configurations provide data redundancy, allowing for drive failures without immediate data loss.
  4. Cache Flush Policy: The cache flush policy determines how often the data in the cache is written to the storage media. A more conservative policy that flushes the cache frequently reduces the risk of data loss in the event of a power loss or system failure. However, it may also impact performance, especially for write-intensive workloads. Finding the right balance between performance and data protection is crucial when configuring the cache flush policy.

In summary, the cache settings of a NAS device like the Lenovo ThinkEdge SE450 Edge Server can impact data loss risks by influencing the reliability and availability of data. Proper configuration, backup strategies, and power protection measures are essential to mitigate these risks and ensure data integrity.

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

Although NAS ThinkEdge SE450 Edge Server 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 ThinkEdge SE450 Edge Server. 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

ThinkEdge SE450 Edge Server 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 Lenovo ThinkEdge SE450 Edge Server 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

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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 ThinkEdge SE450 Edge Server, feel free to leave a comment!
  • Gary Newdigate
    Gary Newdigate 22.08.2023 02:41 #
    Can deleted files be recovered from a NAS Lenovo ThinkEdge SE450 Edge Server device?
    • Hetman Software
      Hetman Software 22.08.2023 04:00 #

      It is possible to recover deleted files from a NAS (Network Attached Storage) device like the Lenovo ThinkEdge SE450 Edge Server, but it depends on several factors.

      1. File System: The recovery chances depend on the file system used by the NAS device. If it uses a standard file system like NTFS, FAT32, or ext4, there are higher chances of successful recovery. However, if the NAS uses a proprietary or custom file system, the recovery process may be more challenging.
      2. Time since deletion: The longer it has been since the files were deleted, the lower the chances of successful recovery. As time passes, the deleted files may be overwritten by new data, reducing the possibility of recovery.
      3. Usage of the NAS device: If the NAS device has been actively used after the deletion, the chances of successful recovery decrease. New data may have overwritten the deleted files, making them unrecoverable.
      4. Data protection measures: If the NAS device has data protection features like RAID or backups, it may be possible to recover the deleted files from these sources.

      In general, it is recommended to immediately stop using the NAS device and seek professional data recovery services if important files have been accidentally deleted. They will have the expertise and tools to attempt recovery from the NAS device.

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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 of the Lenovo ThinkEdge SE450 Edge Server for basic NAS (Network Attached Storage) functionality?

    The key features of the Lenovo ThinkEdge SE450 Edge Server for basic NAS functionality are:

    1. Compact and rugged design: The ThinkEdge SE450 is designed to withstand harsh environments and can be easily deployed in edge computing scenarios.
    2. High storage capacity: It supports up to four hot-swappable 3.5-inch SATA hard drives, providing ample storage space for data storage and retrieval.
    3. RAID support: The server offers support for RAID 0, 1, 5, and 10 configurations, allowing for data redundancy and improved performance.
    4. Scalability: The server is highly scalable, with the ability to connect multiple units together to create a larger storage cluster as per the requirement.
    5. High-speed connectivity: It comes with multiple Gigabit Ethernet ports, enabling fast data transfer between the server and network devices.
    6. Remote management capabilities: The ThinkEdge SE450 includes integrated remote management tools, allowing administrators to monitor and manage the server remotely.
    7. Data protection and security: It offers features like data encryption, access control, and secure file sharing, ensuring the protection and privacy of stored data.
    8. Energy-efficient design: The server is designed to be energy-efficient, reducing power consumption and operating costs.
    9. Easy setup and configuration: The ThinkEdge SE450 comes with user-friendly management software, making it easy to set up and configure the server for NAS functionality.
    10. Compatibility and integration: It is compatible with various operating systems and can seamlessly integrate into existing IT infrastructures.

    Overall, the Lenovo ThinkEdge SE450 Edge Server provides a reliable and efficient solution for basic NAS functionality, offering high storage capacity, data protection, scalability, and remote management capabilities.

  • How does the Lenovo ThinkEdge SE450 Edge Server ensure data security and reliability in a basic NAS setup?

    The Lenovo ThinkEdge SE450 Edge Server ensures data security and reliability in a basic NAS (Network Attached Storage) setup through various features and mechanisms:

    1. Redundant Storage: The ThinkEdge SE450 supports multiple hard drives in a RAID (Redundant Array of Independent Disks) configuration. RAID provides data redundancy by storing data across multiple drives, ensuring that data remains accessible even if one drive fails.
    2. Data Encryption: The server supports data encryption at rest, which means that data stored on the hard drives is encrypted, providing an additional layer of security. This prevents unauthorized access to the data even if the physical drives are compromised.
    3. User Access Control: The server offers user access control mechanisms, allowing administrators to define user permissions and access levels. This ensures that only authorized users can access and modify the stored data, reducing the risk of data breaches.
    4. Secure Network Protocols: The ThinkEdge SE450 supports various secure network protocols, such as HTTPS (HTTP Secure) and SSH (Secure Shell), for remote access and file transfer. These protocols encrypt data during transmission, protecting it from interception and unauthorized access.
    5. Data Backup and Recovery: The server includes backup and recovery features, allowing regular backups of the data stored on the NAS. In case of data loss or corruption, administrators can restore the data from the backups, ensuring data reliability and minimizing downtime.
    6. Physical Security: The ThinkEdge SE450 server is designed with physical security in mind. It typically includes features like lockable drive bays and chassis intrusion detection, protecting the server and its data from unauthorized physical access.
    7. Firmware and Software Updates: Lenovo regularly releases firmware and software updates for their servers, including the ThinkEdge SE450. These updates often include security patches and bug fixes, ensuring that the server remains secure and reliable over time.

    By combining these features and mechanisms, the Lenovo ThinkEdge SE450 Edge Server provides a secure and reliable NAS setup, safeguarding data from unauthorized access, minimizing data loss risks, and ensuring continuous availability.

  • Can you explain the scalability options and expandability features offered by the Lenovo ThinkEdge SE450 Edge Server for basic NAS purposes?

    The Lenovo ThinkEdge SE450 Edge Server offers several scalability options and expandability features that make it suitable for basic NAS (Network Attached Storage) purposes. Here are some of the key features:

    1. Storage Capacity: The ThinkEdge SE450 supports up to four hot-swappable 3.5-inch or 2.5-inch hard drives or solid-state drives (SSDs). This allows you to start with a smaller storage capacity and easily expand it as your needs grow.
    2. RAID Support: The server includes built-in RAID (Redundant Array of Independent Disks) support, which allows you to configure the drives in different RAID configurations (such as RAID 0, 1, 5, or 10). RAID provides data redundancy and improves performance or data protection, depending on the chosen configuration.
    3. PCIe Expansion Slots: The server includes two PCIe expansion slots, allowing you to add additional storage controllers, network interface cards (NICs), or other hardware components to enhance the server's capabilities.
    4. Networking Options: The ThinkEdge SE450 offers multiple Gigabit Ethernet ports, enabling high-speed network connectivity for efficient data transfer. These ports can be used to connect the server to your local network or directly to other devices.
    5. Scalable Processing Power: The server is powered by Intel Xeon processors, which offer excellent performance and scalability. You can choose the processor configuration that best suits your needs, ensuring that the server can handle the demands of your NAS setup.
    6. Memory Expansion: The server supports up to 128GB of DDR4 memory, which can be expanded as required. Sufficient memory ensures smooth operation and efficient data processing for your NAS applications.
    7. Operating System Flexibility: The ThinkEdge SE450 is compatible with various operating systems, including Windows Server and Linux distributions. This flexibility allows you to choose the OS that best fits your requirements and NAS software preferences.

    Overall, the ThinkEdge SE450 Edge Server provides a solid foundation for basic NAS purposes, offering scalable storage capacity, RAID support, expandable hardware options, and powerful processing capabilities.

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