Best Strategies for Restoring NAS Lenovo ThinkSystem SR850P Mission-Critical Server Files

Accidentally deleted ⭐ NAS files? Don't fret – our guide will walk you through the recovery process.

Best Strategies for Restoring NAS Lenovo ThinkSystem SR850P Mission-Critical Server Files

Lenovo ThinkSystem SR850P 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 SR850P Mission-Critical Server.

Best Strategies for Restoring NAS Lenovo ThinkSystem SR850P Mission-Critical Server Files

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 RAID (Redundant Array of Independent Disks) configurations impact data loss in NAS Lenovo ThinkSystem SR850P Mission-Critical Server devices?

RAID configurations can greatly impact data loss in NAS Lenovo ThinkSystem SR850P Mission-Critical Server devices. Here are a few ways RAID can affect data loss:

  1. Data Redundancy: RAID configurations, such as RAID 1 or RAID 5, provide data redundancy by mirroring or striping data across multiple disks. In case of a disk failure, the redundant data allows for seamless data recovery without any loss.
  2. Fault Tolerance: RAID configurations with parity, such as RAID 5 or RAID 6, can tolerate the failure of one or more disks without losing data. The parity information allows for the reconstruction of data from the remaining disks.
  3. Hot Spare: RAID configurations can include hot spare disks, which are kept in standby mode and automatically replace a failed disk in the array. This reduces the downtime and minimizes the risk of data loss.
  4. Performance: RAID configurations can also impact data loss indirectly by improving performance. By distributing data across multiple disks, RAID can enhance read and write speeds, reducing the time window for potential data loss due to hardware failures.
  5. RAID Rebuild: When a failed disk is replaced in a RAID array, the RAID controller initiates a rebuild process to restore data on the new disk. During this rebuild, the array is vulnerable to additional disk failures. If multiple disks fail during the rebuild process, it can result in data loss. Therefore, it is crucial to monitor the RAID array and promptly replace any failed disks.

It's important to note that while RAID configurations can provide protection against certain types of data loss, they are not a substitute for regular backups. Backing up critical data to external storage or cloud services is still essential to safeguard against other risks such as accidental deletion, software corruption, or natural disasters.

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

Although NAS ThinkSystem SR850P 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 SR850P 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 SR850P 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 SR850P 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 SR850P Mission-Critical Server, feel free to leave a comment!
  • Rathbone Furley
    Rathbone Furley 22.08.2023 00:58 #
    Can data recovery from a NAS Lenovo ThinkSystem SR850P Mission-Critical Server device be done if the device is not accessible or not recognized by the network?
    • Hetman Software
      Hetman Software 22.08.2023 01:00 #

      If a NAS Lenovo ThinkSystem SR850P Mission-Critical Server device is not accessible or not recognized by the network, data recovery can still be possible, but it may require additional steps and expertise. Here are a few options to consider:

      1. Check physical connections: Ensure that all cables and connections are properly connected and functioning. Sometimes, a loose connection or faulty cable can cause the device to be inaccessible.
      2. Restart the device: Try restarting the NAS server to see if it resolves the connectivity issue. Sometimes, a simple reboot can fix network-related problems.
      3. Troubleshoot network settings: Verify that the network settings on the NAS server are correctly configured. Double-check the IP address, subnet mask, gateway, and DNS settings. Ensure that the server is connected to the correct network and that there are no conflicting IP addresses.
      4. Direct connection: If the NAS server is not recognized by the network, try connecting it directly to a computer using an Ethernet cable. This bypasses any potential network issues and allows you to access the device directly.
      5. Professional data recovery services: If the above steps don't work, or if there are hardware failures or data corruption issues, it is recommended to seek professional data recovery services. Data recovery experts have specialized tools and techniques to recover data from inaccessible or damaged storage devices.

      Remember, attempting data recovery on your own may further complicate the situation or even cause permanent data loss. It is advisable to consult with professionals who have experience in dealing with NAS devices and data recovery.

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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 benefits of performing software updates on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS?

    Performing software updates on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS offers several key benefits:

    1. Security enhancements: Software updates often include security patches that address vulnerabilities and protect the server from potential cyber threats. Regular updates ensure that the server remains secure and reduces the risk of unauthorized access or data breaches.
    2. Bug fixes and stability improvements: Updates often include bug fixes that resolve known issues and improve the overall stability and performance of the server. By keeping the software up to date, you can ensure the server operates smoothly and efficiently.
    3. Compatibility with new technologies: Software updates may introduce compatibility with new technologies or hardware components. This allows the server to take advantage of the latest advancements, ensuring optimal performance and functionality.
    4. Feature enhancements: Updates can also introduce new features or functionality to the server. These enhancements may improve productivity, efficiency, or provide additional capabilities that can benefit the overall operations of the server.
    5. Vendor support: Regularly updating the software on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS ensures that you can receive ongoing support from the vendor. If you encounter any issues or require assistance, the vendor will typically require that the server is running the latest software version before providing support.

    Overall, performing software updates on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS helps maintain security, stability, compatibility, and access to vendor support, ultimately optimizing the server's performance and protecting your data.

  • How frequently should software updates be performed on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS?

    Software updates for the Lenovo ThinkSystem SR850P Mission-Critical Server NAS should be performed regularly to ensure optimal performance, security, and compatibility with the latest technologies. It is recommended to follow the manufacturer's guidelines and best practices for software updates. This typically involves checking for updates monthly or quarterly and installing them as soon as they are available. However, it is always important to review the specific requirements and recommendations provided by Lenovo for this particular server model.

  • What are the potential risks or challenges associated with software updates on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS, and how can they be mitigated?

    Some potential risks or challenges associated with software updates on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS include:

    1. Compatibility issues: Software updates may not be fully compatible with the existing hardware or software components of the server, leading to system instability or failures. This risk can be mitigated by thoroughly testing the updates in a non-production environment before deploying them to the live server.
    2. Data loss or corruption: During the update process, there is a risk of data loss or corruption if the update is not performed correctly. To mitigate this risk, it is essential to have a robust backup strategy in place, ensuring all critical data is backed up before initiating any updates. Additionally, following best practices and guidelines provided by Lenovo for performing updates can minimize the chances of data loss.
    3. Downtime and service disruption: Software updates often require system reboots or service interruptions, resulting in downtime for the server and potential disruption of services. To mitigate this risk, it is recommended to schedule updates during periods of low usage or during planned maintenance windows to minimize the impact on users or critical operations.
    4. Security vulnerabilities: Delaying software updates can expose the server to security vulnerabilities, potentially leading to unauthorized access or data breaches. To mitigate this risk, it is crucial to regularly monitor and apply security patches and updates provided by Lenovo. Staying up to date with the latest security bulletins and advisories from Lenovo can help identify and address any known vulnerabilities promptly.
    5. Performance degradation: In some cases, software updates may introduce performance issues or inefficiencies that can impact the overall server performance. To mitigate this risk, it is recommended to closely monitor system performance after updates and promptly address any performance degradation by working with Lenovo support or seeking assistance from experienced system administrators.

    To ensure a smooth software update process on the Lenovo ThinkSystem SR850P Mission-Critical Server NAS, it is advisable to follow Lenovo's official documentation, engage with their support team for guidance, and involve experienced system administrators who are familiar with the server's configuration and best practices.

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