How to Retrieve Deleted Files from a NAS Lenovo ThinkSystem ST550 Tower Server System

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How to Retrieve Deleted Files from a NAS Lenovo ThinkSystem ST550 Tower Server System

Lenovo ThinkSystem ST550 Tower 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 ST550 Tower Server.

How to Retrieve Deleted Files from a NAS Lenovo ThinkSystem ST550 Tower Server System

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.

Can natural disasters such as floods or fires result in data loss for NAS Lenovo ThinkSystem ST550 Tower Server devices?

Yes, natural disasters such as floods or fires can result in data loss for NAS Lenovo ThinkSystem ST550 Tower Server devices. These devices are not immune to physical damage caused by such disasters. Water damage from floods can destroy the server's components, including hard drives and other storage devices, leading to data loss. Similarly, fires can cause severe damage to the server, melting or burning the hardware and making data recovery extremely difficult or impossible. It is crucial to have proper disaster recovery plans in place, including offsite backups, to mitigate the risk of data loss in such situations.

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

Although NAS ThinkSystem ST550 Tower 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 ST550 Tower 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.

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How to recover data from a Lenovo

How to recover data from a Lenovo

ThinkSystem ST550 Tower Server has 20 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 ST550 Tower 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 ST550 Tower Server, feel free to leave a comment!
  • Ned Merrington
    Ned Merrington 22.08.2023 02:44 #
    Is it possible to recover data from a NAS Lenovo ThinkSystem ST550 Tower Server device that has suffered a power loss or sudden shutdown?
    • Hetman Software
      Hetman Software 22.08.2023 03:01 #

      Yes, it is possible to recover data from a NAS (Network Attached Storage) device such as the Lenovo ThinkSystem ST550 Tower Server, even if it has suffered a power loss or sudden shutdown. However, the success of data recovery depends on various factors such as the extent of damage to the device and the file system used.

      Here are some steps you can take to attempt data recovery:

      1. Power off the NAS device and disconnect it from the power source to prevent further damage.
      2. Do not attempt to power on the device immediately after the power loss or sudden shutdown, as this could potentially cause additional damage.
      3. If possible, consult a professional data recovery service that specializes in NAS devices. They have the expertise and tools required to recover data from such devices.
      4. If you are familiar with NAS systems and data recovery procedures, you can try connecting the hard drives from the NAS device to a computer directly. Use a SATA-to-USB adapter or connect them internally if compatible. This allows you to access the drives and attempt data recovery using specialized software.
      5. If the NAS device uses a RAID configuration, it may be necessary to rebuild the RAID array before attempting data recovery. Consult the device's manual or a professional for guidance on how to rebuild the RAID.

      Remember, data recovery is a complex process, and there is no guarantee of success. It is always recommended to seek professional assistance if the data on the NAS device is critical or valuable.

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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 network protocols supported by the Lenovo ThinkSystem ST550 Tower Server?

    The Lenovo ThinkSystem ST550 Tower Server supports various network protocols, including:

    1. Ethernet: It supports various Ethernet protocols such as TCP/IP, UDP/IP, ICMP/IP, ARP, DHCP, and DNS.
    2. Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6): These protocols are used for addressing and routing network traffic.
    3. Dynamic Host Configuration Protocol (DHCP): It enables automatic IP address assignment to devices connected to the network.
    4. Domain Name System (DNS): It translates domain names into IP addresses, allowing users to access websites using human-readable names.
    5. Simple Network Management Protocol (SNMP): It is used for managing and monitoring network devices.
    6. File Transfer Protocol (FTP): It enables file transfer between a client and a server over a network.
    7. Secure Shell (SSH): It provides secure remote access to the server using encryption.
    8. Remote Desktop Protocol (RDP): It allows remote access to the server's desktop interface.
    9. Simple Mail Transfer Protocol (SMTP): It is used for sending email over a network.
    10. Network Time Protocol (NTP): It synchronizes the server's time with a reliable time source over a network.

    These are some of the network protocols supported by the Lenovo ThinkSystem ST550 Tower Server. The server may also support additional protocols depending on the specific configuration and software installed.

  • How does the Lenovo ThinkSystem ST550 Tower Server ensure secure communication over network protocols?

    The Lenovo ThinkSystem ST550 Tower Server ensures secure communication over network protocols through various mechanisms:

    1. Secure Socket Layer (SSL) and Transport Layer Security (TLS): The server supports SSL and TLS protocols, which provide encryption and authentication for secure communication over the network. These protocols ensure that data transmitted between the server and other devices is encrypted, preventing unauthorized access and eavesdropping.
    2. Secure Shell (SSH): The server supports SSH, a cryptographic network protocol that provides secure remote access to the server. SSH uses encryption to protect the communication between the server and remote clients, preventing unauthorized access and data interception.
    3. IPsec: The server supports IPsec (Internet Protocol Security), which provides secure communication at the IP layer. IPsec encrypts and authenticates IP packets, ensuring the confidentiality and integrity of data transmitted over the network.
    4. Virtual Local Area Networks (VLANs): The server supports VLANs, which enable the segmentation of a network into multiple virtual networks. VLANs provide a level of isolation and security by separating network traffic and preventing unauthorized access between different VLANs.
    5. Access Control Lists (ACLs): The server allows the use of Access Control Lists, which are used to control network traffic based on predefined rules. ACLs can be configured to permit or deny specific types of network communication, ensuring that only authorized traffic is allowed.
    6. Firewall: The server can be configured with a firewall to filter and control network traffic. Firewalls can be set up to allow or block specific network protocols, ports, or IP addresses, providing an additional layer of security for communication over the network.
    7. Secure Boot: The server supports Secure Boot, a feature that ensures the integrity of the server's boot process by verifying the digital signatures of firmware components. Secure Boot prevents the execution of unauthorized or tampered firmware, protecting the server from potential security threats.

    By incorporating these security features and protocols, the Lenovo ThinkSystem ST550 Tower Server ensures secure communication over network protocols, safeguarding data confidentiality, integrity, and availability.

  • Can the Lenovo ThinkSystem ST550 Tower Server be configured to support specific network protocols based on the organization's requirements?

    Yes, the Lenovo ThinkSystem ST550 Tower Server can be configured to support specific network protocols based on the organization's requirements. The server comes with a built-in Ethernet controller that supports various network protocols such as TCP/IP, DHCP, DNS, SNMP, and more. Additionally, the server's operating system can be configured to enable or disable specific network protocols as per the organization's needs.

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