How to Recover Lost Data from a NAS Lenovo ThinkSystem SR850 Mission-Critical Server Device

Retrieve deleted data from your ⭐ NAS with ease using our expert tips and tricks.

How to Recover Lost Data from a NAS Lenovo ThinkSystem SR850 Mission-Critical Server Device

Lenovo ThinkSystem SR850 Mission-Critical 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 ThinkSystem SR850 Mission-Critical Server.

How to Recover Lost Data from a NAS Lenovo ThinkSystem SR850 Mission-Critical Server Device

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.

Are there any specific precautions to take while migrating data between NAS Lenovo ThinkSystem SR850 Mission-Critical Server devices?

Yes, there are several precautions to consider while migrating data between NAS Lenovo ThinkSystem SR850 Mission-Critical Server devices. Here are some important ones:

  1. Backup Data: Before initiating any migration process, it is crucial to create a backup of all the data on the source NAS device. This ensures that in case of any unexpected issues or data loss during the migration, you can restore the data from the backup.
  2. Plan the Migration: Develop a detailed migration plan that includes the steps involved, estimated downtime, and any potential risks. This will help you streamline the process and minimize any potential disruptions.
  3. Validate Compatibility: Ensure that the target NAS device (Lenovo ThinkSystem SR850) is compatible with the source NAS device. Check the specifications, supported protocols, and compatibility matrix provided by Lenovo to ensure a smooth migration process.
  4. Network Considerations: Assess the network infrastructure and bandwidth between the source and target NAS devices. If the data volume is substantial, consider using a dedicated network connection or increasing the bandwidth to expedite the migration process.
  5. Allocate Sufficient Time: Depending on the data volume and network speed, the migration process may take a significant amount of time. Plan accordingly and allocate sufficient time for the migration to avoid rushing or interrupting the process.
  6. Test the Migration: Before migrating the entire dataset, it is advisable to perform a test migration with a smaller subset of data. This allows you to identify any potential issues or conflicts that may arise during the actual migration and make necessary adjustments.
  7. Monitor the Migration: During the migration process, closely monitor the progress and ensure that the data is being transferred correctly. Use monitoring tools provided by Lenovo or third-party software to track the migration status and identify any anomalies.
  8. Verify Data Integrity: Once the migration is complete, verify the integrity of the migrated data on the target NAS device. Compare it with the backup or the source NAS device to ensure that all data has been successfully transferred without any corruption or loss.
  9. Update DNS and Network Configuration: If the IP addresses or network configuration of the NAS devices change after migration, update the DNS records and any relevant network settings to ensure seamless access to the migrated data.
  10. User Communication: Inform users about the migration process, expected downtime, and any temporary changes in accessing the data. Provide clear instructions on how to access the data on the new NAS device after migration.

By following these precautions, you can minimize the risks and ensure a successful data migration between NAS Lenovo ThinkSystem SR850 Mission-Critical Server devices.

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

Although NAS ThinkSystem SR850 Mission-Critical 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 ThinkSystem SR850 Mission-Critical 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

ThinkSystem SR850 Mission-Critical Server has 24 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 ThinkSystem SR850 Mission-Critical 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 ThinkSystem SR850 Mission-Critical Server, feel free to leave a comment!
  • Clayton Jessop
    Clayton Jessop 22.08.2023 00:57 #
    How to rebuild RAID on NAS Lenovo ThinkSystem SR850 Mission-Critical Server?
    • Hetman Software
      Hetman Software 22.08.2023 01:59 #

      To rebuild RAID on the Lenovo ThinkSystem SR850 Mission-Critical Server, follow these steps:

      1. Log in to the server's management interface, such as the Lenovo XClarity Controller (XCC) or the RAID controller's management interface.
      2. Identify the failed or degraded RAID array. This information is usually displayed in the management interface dashboard or storage section.
      3. Replace the failed or degraded hard drive(s) with new, compatible drives. Ensure that the replacement drives are of the same capacity or larger than the original drives.
      4. After replacing the drives, go to the RAID management interface and navigate to the RAID array configuration section.
      5. Locate the RAID array that needs to be rebuilt and select the option to rebuild or resynchronize the array. This option is typically found in the RAID management interface under the specific RAID array's settings or actions.
      6. Confirm the rebuild or resynchronization process. Depending on the RAID controller and the size of the array, this process may take some time to complete. During this process, the RAID controller will rebuild the data on the new drives, restoring the redundancy and integrity of the RAID array.
      7. Monitor the progress of the rebuild process. Most RAID management interfaces provide a progress indicator or status information to track the rebuild process. It is recommended to regularly check the status until the rebuild is complete.
      8. Once the rebuild process is finished, verify that the RAID array is healthy and all drives are functioning properly. This can be done by checking the RAID management interface or running a diagnostic test on the RAID array.

      Note: It is crucial to have a recent backup of your data before attempting any RAID rebuild process to avoid potential data loss.

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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 capabilities of the Lenovo ThinkSystem SR850 Mission-Critical Server that make it suitable for use as a VPN server?

    The Lenovo ThinkSystem SR850 Mission-Critical Server has several key features and capabilities that make it suitable for use as a VPN server:

    1. High Performance: The server is powered by powerful Intel Xeon processors and supports up to 112 cores and 6TB of memory, providing the necessary performance to handle a large number of VPN connections.
    2. Scalability: The SR850 server offers flexible scalability options, allowing you to add more resources as your VPN server requirements grow. It supports up to 48 drives, providing ample storage capacity for VPN logs and user data.
    3. Reliability: The server is designed for mission-critical workloads, ensuring high availability and reliability. It includes redundant power supplies, fans, and RAID controllers, minimizing the risk of downtime.
    4. Security: The ThinkSystem SR850 server includes built-in security features such as Trusted Platform Module (TPM) and Secure Boot, which help protect against unauthorized access and ensure the integrity of the server.
    5. Virtualization Support: The server is optimized for virtualization, allowing you to run multiple virtual machines to separate and manage VPN connections efficiently. It supports popular virtualization platforms like VMware and Microsoft Hyper-V.
    6. Remote Management: The server includes advanced remote management capabilities, such as Lenovo XClarity Controller, which allows you to monitor and manage the server remotely. This is particularly useful for managing a VPN server located in a different physical location.
    7. Network Connectivity: The SR850 server offers high-speed network connectivity with multiple Gigabit Ethernet ports and optional 10/25/40/100GbE adapters. This ensures fast and reliable VPN connections for users.
    8. Redundancy and Failover: The server supports various redundancy and failover features, including hot-swappable components, RAID configurations, and redundant networking options. These features help ensure uninterrupted VPN service in case of hardware failures.

    Overall, the Lenovo ThinkSystem SR850 Mission-Critical Server provides the performance, scalability, reliability, security, and management features required for a robust and efficient VPN server deployment.

  • How does the Lenovo ThinkSystem SR850 Mission-Critical Server ensure secure and reliable VPN connections for mission-critical applications?

    The Lenovo ThinkSystem SR850 Mission-Critical Server ensures secure and reliable VPN connections for mission-critical applications through several features:

    1. Robust Security: The server incorporates advanced security features such as hardware-based Trusted Platform Module (TPM), Secure Boot, and firmware-based Secure Firmware Rollback to protect against unauthorized access and tampering. These features ensure that the server's operating system and firmware remain secure and uncompromised.
    2. Virtual Private Network (VPN) Support: The server is designed to support VPN technologies, allowing secure remote access to the server and its applications. It supports industry-standard VPN protocols such as IPsec and SSL/TLS, ensuring encrypted and authenticated communication between remote clients and the server.
    3. High Availability: The SR850 server is built for mission-critical applications and offers high availability features like redundant power supplies, hot-swappable components, and advanced error correction capabilities. These features help maintain uninterrupted VPN connections, minimizing downtime and ensuring reliable connectivity.
    4. Scalability and Performance: The server is equipped with powerful processors, ample memory, and high-speed networking capabilities to handle demanding VPN workloads. It can support a large number of concurrent VPN connections, ensuring scalability for growing mission-critical applications.
    5. Integrated Management: The server comes with integrated management tools like Lenovo XClarity Controller, which provides a unified interface for managing the server, including VPN configurations. These tools enable administrators to monitor and manage VPN connections, ensuring their security and reliability.

    Overall, the Lenovo ThinkSystem SR850 Mission-Critical Server combines robust security features, VPN support, high availability, scalability, and integrated management capabilities to ensure secure and reliable VPN connections for mission-critical applications.

  • What are the advantages and benefits of using the Lenovo ThinkSystem SR850 Mission-Critical Server as a VPN server compared to other options in the market?

    The Lenovo ThinkSystem SR850 Mission-Critical Server offers several advantages and benefits when used as a VPN server compared to other options in the market:

    1. High Performance: The SR850 server is designed to deliver exceptional performance with its powerful processors, high memory capacity, and fast storage options. This ensures that the VPN server can handle a large number of concurrent connections and process data quickly, resulting in a smooth and efficient VPN experience.
    2. Scalability: The SR850 server is highly scalable, allowing you to easily expand the VPN server's capacity as your organization grows. It supports a large number of processor cores, memory modules, and storage devices, enabling you to scale up the server's resources to meet increasing demand.
    3. Reliability and Availability: Mission-critical servers like the SR850 are built with redundancy features to ensure high availability and minimize downtime. It offers hot-swappable components, redundant power supplies, and advanced error correction technologies, reducing the risk of server failures and ensuring uninterrupted VPN connectivity.
    4. Security: The SR850 server provides advanced security features to protect your VPN infrastructure. It offers hardware-based encryption capabilities, secure boot options, and firmware-level security measures. These features help safeguard sensitive data and prevent unauthorized access to the VPN server.
    5. Management and Monitoring: Lenovo provides comprehensive management and monitoring tools for their ThinkSystem servers. These tools allow you to easily configure and manage the VPN server, monitor system health, and troubleshoot any issues that may arise. This simplifies server administration and helps ensure the smooth operation of the VPN service.
    6. Cost-effectiveness: Despite being a high-performance server, the SR850 offers cost-effective solutions for VPN deployments. Lenovo provides competitive pricing options, flexible configurations, and efficient power management features, helping to reduce the total cost of ownership over the server's lifecycle.

    Overall, the Lenovo ThinkSystem SR850 Mission-Critical Server offers a combination of performance, scalability, reliability, security, and management features that make it an excellent choice for organizations looking to deploy a VPN server.

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