How to Retrieve Deleted Files from Network Attached Storage

Accidentally deleted important files on your ⭐ NAS? Our guide will help you retrieve them effortlessly.

How to Retrieve Deleted Files from Network Attached Storage

Lenovo ThinkSystem SR655 Rack 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 SR655 Rack Server.

How to Retrieve Deleted Files from Network Attached Storage

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 quality of service (QoS) settings impact data transfer reliability on NAS Lenovo ThinkSystem SR655 Rack Server devices?

Quality of Service (QoS) settings can have a significant impact on data transfer reliability on NAS Lenovo ThinkSystem SR655 Rack Server devices. Here are a few ways QoS settings can affect data transfer reliability:

  1. Bandwidth Allocation: QoS settings allow you to allocate bandwidth to different applications or services. By prioritizing critical data transfers, you can ensure that they receive sufficient bandwidth, reducing the chances of congestion or data loss during high network traffic periods.
  2. Traffic Prioritization: QoS settings enable you to prioritize specific types of traffic, such as video streaming or VoIP, over others. By prioritizing data transfers, you can ensure that critical transfers are not affected by lower-priority traffic, improving reliability.
  3. Packet Prioritization: QoS settings can prioritize packets based on their importance or type. For example, you can prioritize TCP packets over UDP packets or give higher priority to control packets. This helps ensure that important data packets are delivered reliably and in a timely manner.
  4. Traffic Shaping: QoS settings allow you to shape the traffic flow, limiting the rate of data transfer for specific applications or services. By controlling the traffic flow, you can prevent network congestion and ensure that data transfers are reliable and consistent.
  5. Latency Control: QoS settings can help control latency by prioritizing latency-sensitive applications. This is particularly important for real-time applications like video conferencing or online gaming, where even small delays can significantly impact the user experience and data transfer reliability.

Overall, configuring QoS settings on NAS Lenovo ThinkSystem SR655 Rack Server devices can help optimize network resources, reduce congestion, prioritize critical data transfers, and improve overall data transfer reliability.

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

Although NAS ThinkSystem SR655 Rack 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 SR655 Rack 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 SR655 Rack Server has 32 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 SR655 Rack 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 SR655 Rack Server, feel free to leave a comment!
  • Trevor Barry
    Trevor Barry 22.08.2023 08:00 #
    Is it possible to recover data from a NAS Lenovo ThinkSystem SR655 Rack Server device that has undergone a system update or software upgrade?
    • Hetman Software
      Hetman Software 22.08.2023 09:02 #

      In general, performing a system update or software upgrade on a NAS (Network Attached Storage) device should not result in data loss. However, it is always recommended to have a backup of your important data before proceeding with any updates or upgrades.

      If, for some reason, you experience data loss after a system update or software upgrade, there are still potential ways to recover the data. Here are a few steps you can take:

      1. Check for backups: If you have a backup of your data, restore it to the NAS device.
      2. Contact support: Reach out to Lenovo support or the manufacturer of the NAS device for assistance. They may have specific recovery tools or suggestions to help you recover the lost data.
      3. Consult a professional data recovery service: If the data is critical and you are unable to recover it yourself, consider contacting a professional data recovery service. They have specialized tools and expertise to recover data from various storage devices, including NAS devices.
      4. Avoid further changes: It is important to avoid making any further changes to the NAS device, such as formatting or initializing it, as it may overwrite the lost data and decrease the chances of successful recovery.

      Remember, the success of data recovery depends on various factors such as the extent of data loss, the specific NAS device, and the actions taken after the loss occurred.

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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 Lenovo ThinkSystem SR655 Rack Server that make it suitable for storing video game data?

    The Lenovo ThinkSystem SR655 Rack Server has several key features and specifications that make it suitable for storing video game data:

    1. Processor: It is powered by AMD EPYC processors, which offer high-performance computing capabilities, making it ideal for handling the demanding requirements of video game data storage.
    2. Memory: It supports up to 4TB of DDR4 memory, allowing for efficient data processing and retrieval, ensuring smooth gameplay experiences.
    3. Storage: The server provides multiple storage options, including support for up to 12 hot-swap 3.5" or 2.5" drives, enabling ample storage capacity for video game data.
    4. RAID Support: It offers RAID support, allowing for data redundancy and protection against drive failures, ensuring the safety and integrity of video game data.
    5. Scalability: The server is highly scalable, supporting up to four GPUs for enhanced graphics processing, which is crucial for storing and rendering high-resolution video game assets.
    6. High-Speed Connectivity: It features multiple Ethernet ports, including 10GbE and 25GbE options, ensuring fast and reliable data transfer between the server and gaming devices.
    7. Redundancy and Reliability: The server includes redundant power supplies and cooling options, minimizing the risk of downtime and ensuring uninterrupted access to video game data.
    8. Management and Monitoring: It comes with integrated management tools, such as Lenovo XClarity Controller, which allows for remote management and monitoring of the server's performance and storage.

    Overall, the Lenovo ThinkSystem SR655 Rack Server's powerful processing capabilities, ample storage capacity, scalability, and reliability make it well-suited for storing video game data, providing gamers with a seamless and immersive gaming experience.

  • How does the Lenovo ThinkSystem SR655 Rack Server ensure high-performance and reliable storage for video game data?

    The Lenovo ThinkSystem SR655 Rack Server ensures high-performance and reliable storage for video game data through several key features:

    1. Storage Capacity: The server offers a high storage capacity, allowing for large amounts of video game data to be stored. It supports up to 24 2.5-inch drives or 12 3.5-inch drives, providing ample space for storing game files, updates, and user data.
    2. High-Speed Storage Interfaces: The server is equipped with multiple high-speed storage interfaces, such as SAS, SATA, and NVMe, enabling fast data transfer rates. NVMe drives, in particular, offer extremely low latency and high bandwidth, ensuring quick access to game data.
    3. RAID Support: The server supports various RAID configurations, allowing for data redundancy and improved performance. RAID can protect against drive failures and ensure continuous availability of game data by storing multiple copies across multiple drives.
    4. Scalability: The server is highly scalable, allowing for easy expansion of storage capacity as game data requirements grow. It supports multiple drive bays and can be easily upgraded with additional drives or storage enclosures without disrupting the server's operation.
    5. Redundant Power and Cooling: The server includes redundant power supplies and cooling systems, ensuring continuous operation even in case of power or cooling failures. This helps prevent data loss or system downtime, which is crucial for video game data storage.
    6. Reliability and Data Protection: The ThinkSystem SR655 Rack Server is designed with enterprise-grade components and features to ensure reliability and data protection. It includes error-correcting code (ECC) memory, redundant fans, and hot-swappable drives, minimizing the risk of data corruption or loss.
    7. Management and Monitoring: The server comes with advanced management and monitoring tools, such as Lenovo XClarity Controller, which allows administrators to efficiently manage storage resources, monitor system health, and proactively identify and resolve potential issues.

    Overall, the Lenovo ThinkSystem SR655 Rack Server offers a combination of high-performance storage interfaces, scalability, data protection features, and robust management capabilities to ensure reliable and efficient storage for video game data.

  • What are the advantages of using the Lenovo ThinkSystem SR655 Rack Server as a NAS for video game data compared to other storage solutions?

    There are several advantages of using the Lenovo ThinkSystem SR655 Rack Server as a NAS (Network Attached Storage) for video game data compared to other storage solutions:

    1. High performance: The Lenovo ThinkSystem SR655 Rack Server is equipped with powerful AMD EPYC processors and supports up to 32 cores per socket. This ensures high-performance computing and data transfer speeds, allowing for quick access and retrieval of video game data.
    2. Scalability: The SR655 Rack Server offers excellent scalability options, allowing you to expand storage capacity as your video game data grows. It supports up to 16 drive bays, enabling you to add more hard drives or solid-state drives (SSDs) to accommodate larger game libraries.
    3. Redundancy and data protection: The server includes features like RAID (Redundant Array of Independent Disks) support, which provides redundancy and data protection. RAID configurations can protect against drive failures, ensuring that your video game data remains safe and accessible.
    4. Network connectivity: The ThinkSystem SR655 Rack Server has multiple Gigabit Ethernet ports and optional 10GbE (10 Gigabit Ethernet) connectivity. This allows for high-speed data transfer and efficient network performance, ensuring smooth gameplay experiences.
    5. Management and monitoring capabilities: Lenovo provides robust management and monitoring tools for their ThinkSystem servers. These tools allow you to easily control and monitor your NAS, ensuring optimal performance and identifying any potential issues before they impact gameplay.
    6. Reliability and durability: Lenovo is known for building reliable and durable hardware. The ThinkSystem SR655 Rack Server is designed to withstand demanding environments and continuous operation, making it a reliable choice for storing and accessing video game data.
    7. Cost-effectiveness: The Lenovo ThinkSystem SR655 Rack Server provides a cost-effective storage solution for video game data. Its high-performance capabilities and scalability options make it a versatile choice that can accommodate the growing storage needs of modern video games without breaking the bank.

    Overall, the Lenovo ThinkSystem SR655 Rack Server offers a combination of performance, scalability, data protection, and cost-effectiveness that makes it an excellent choice for a NAS solution for video game data.

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