Best Practices for Recovering Data from NAS Promise Pegasus3 PC Edition R4 RAID Array Failures

Follow these best practices for recovering data from a failed ⭐ NAS RAID array, ensuring data integrity through RAID level understanding and backup strategies.

Best Practices for Recovering Data from NAS Promise Pegasus3 PC Edition R4 RAID Array Failures

Promise Pegasus3 PC Edition R4 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from Pegasus3 PC Edition R4.

Best Practices for Recovering Data from NAS Promise Pegasus3 PC Edition R4 RAID Array Failures

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 Promise 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 Promise Pegasus3 PC Edition R4 device's network throughput or bandwidth capacity affect data transfer and potential loss?

The network throughput or bandwidth capacity of a NAS (Network Attached Storage) device like the Promise Pegasus3 PC Edition R4 can significantly impact data transfer and potential loss in the following ways:

  1. Data Transfer Speed: The network throughput determines the speed at which data can be transferred between the NAS device and other network-connected devices. Higher throughput allows for faster data transfers, reducing the time required to back up or retrieve files. Conversely, lower throughput limits the transfer speed, resulting in longer transfer times.
  2. Latency: Network throughput affects the latency or delay in data transmission. Higher throughput minimizes latency, enabling real-time access to data and smooth streaming of multimedia files. Lower throughput increases latency, leading to delays in accessing or streaming data.
  3. Concurrent Users: The network throughput capacity determines the number of concurrent users who can access the NAS device simultaneously without experiencing performance degradation. Insufficient throughput may result in slower data transfers or even connection drops when multiple users try to access the NAS simultaneously.
  4. Potential Data Loss: Inadequate network throughput can increase the risk of data loss during data transfer. If the network capacity is lower than the data transfer rate, data packets may be dropped or corrupted, leading to incomplete or damaged files. This can result in data loss or the need to retransfer data, potentially causing inconvenience and additional time consumption.
  5. RAID Rebuild Time: The network throughput affects the time required to rebuild a RAID array in case of a drive failure. When a drive fails in a RAID configuration, the data from the failed drive needs to be reconstructed onto a replacement drive. Higher network throughput allows for faster RAID rebuilds, minimizing the time during which the data is vulnerable to loss.

To optimize data transfer and reduce potential loss, it is essential to ensure that the NAS device's network throughput capacity matches the requirements of the network environment, including the number of users, data transfer rates, and the type of data being transferred.

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

Although NAS Pegasus3 PC Edition R4 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 Promise Pegasus3 PC Edition R4. 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 Promise

How to recover data from a Promise

Pegasus3 PC Edition R4 has 4 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 1E;
  • RAID 3;
  • RAID 5;
  • RAID 6;
  • 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 Promise Pegasus3 PC Edition R4 network-attached storage keeps OS Linux 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 Pegasus3 PC Edition R4, feel free to leave a comment!
  • Hale Harewood
    Hale Harewood 6.09.2023 03:55 #
    Are there any specific encryption keys or passwords required for data recovery from encrypted NAS Promise Pegasus3 PC Edition R4 devices?
    • Hetman Software
      Hetman Software 6.09.2023 05:01 #

      Yes, in order to recover data from an encrypted NAS Promise Pegasus3 PC Edition R4 device, you will need the encryption keys or passwords associated with the device. These keys or passwords are used to decrypt the data stored on the device and make it accessible. Without the correct keys or passwords, the data will remain encrypted and inaccessible.

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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 available cloud services that are compatible with NAS Promise Pegasus3 PC Edition R4 for copying data?

    The NAS Promise Pegasus3 PC Edition R4 is a RAID storage device that is typically used for local storage and backup. However, it does not natively support cloud services for copying data.

    To copy data from the Pegasus3 R4 to a cloud service, you would typically need to connect the NAS device to a computer or server and then use software or tools provided by the cloud service to transfer the data. Some popular cloud services that can be used for copying data include:

    1. Amazon S3: Amazon Simple Storage Service (S3) is a highly scalable cloud storage service offered by Amazon Web Services (AWS). You can use tools like AWS CLI or third-party software like CloudBerry Explorer to transfer data from your NAS to Amazon S3.
    2. Microsoft Azure Blob Storage: Azure Blob Storage is a cloud storage service provided by Microsoft Azure. You can use tools like Azure Storage Explorer or Azure CLI to copy data from your NAS to Azure Blob Storage.
    3. Google Cloud Storage: Google Cloud Storage is a scalable and durable cloud storage service provided by Google Cloud Platform. You can use tools like gsutil or third-party software like CloudBerry Explorer to copy data from your NAS to Google Cloud Storage.
    4. Dropbox: Dropbox is a popular cloud storage and file synchronization service. You can install the Dropbox client on your computer or server connected to the NAS and then sync the data from the NAS to your Dropbox account.
    5. OneDrive: OneDrive is Microsoft's cloud storage and file synchronization service. You can install the OneDrive client on your computer or server connected to the NAS and then sync the data from the NAS to your OneDrive account.

    It's important to note that the compatibility and ease of use may vary depending on the specific NAS and cloud service you choose. It's recommended to consult the documentation or support resources provided by the NAS manufacturer and the cloud service for detailed instructions on how to copy data from your specific NAS device to the desired cloud service.

  • What are the steps involved in copying data from NAS Promise Pegasus3 PC Edition R4 to a cloud service?

    To copy data from a NAS Promise Pegasus3 PC Edition R4 to a cloud service, you can follow these general steps:

    1. Choose a cloud service provider: Select a cloud service provider that meets your requirements and offers the storage capacity you need.
    2. Create an account: Sign up for an account with the chosen cloud service provider. This usually involves providing some personal information and setting up a username and password.
    3. Set up the cloud storage: Once your account is created, you may need to configure the cloud storage settings. This could involve selecting a storage plan, setting up encryption, and configuring any other desired options.
    4. Connect the NAS to your computer: Connect the Promise Pegasus3 R4 NAS to your computer using a compatible interface such as Thunderbolt or USB.
    5. Access the NAS: Open the file explorer or file management software on your computer and navigate to the NAS. This will allow you to view and manage the files stored on the NAS.
    6. Select the data to copy: Identify the files or folders you want to copy to the cloud service. You can either copy the entire contents of the NAS or select specific files/folders.
    7. Copy the data to your computer: Copy the selected files/folders from the NAS to a local storage location on your computer. This step is necessary to transfer the data from the NAS to the cloud service.
    8. Upload to the cloud service: Open the cloud service's web interface or desktop client and locate the option to upload files. Use this feature to select and upload the files/folders you copied from the NAS. The upload process may take some time depending on the size of the data and your internet connection speed.
    9. Verify the upload: Once the upload is complete, double-check the cloud service to ensure that all the files and folders have been successfully uploaded. You can compare the file sizes and number of files to ensure the data integrity.
    10. Organize and manage the cloud storage: After the data is successfully uploaded, you can organize the files/folders within the cloud storage service according to your preference. Create folders, apply labels, or use any available organizational features to manage your data effectively.

    It's worth noting that the specific steps may vary slightly depending on the cloud service provider you choose and the software used to manage the NAS. Always refer to the documentation provided by the cloud service and NAS manufacturer for detailed instructions.

  • Are there any limitations or considerations to keep in mind when copying data from NAS Promise Pegasus3 PC Edition R4 to cloud services?

    When copying data from a NAS (Network Attached Storage) device like the Promise Pegasus3 PC Edition R4 to cloud services, there are some limitations and considerations to keep in mind:

    1. Bandwidth: The speed of your internet connection will determine the rate at which data can be transferred to the cloud. If you have a slow or limited bandwidth, it may take a significant amount of time to upload large amounts of data.
    2. Data transfer costs: Some cloud service providers charge for data transfer, especially if you exceed certain limits. Make sure to check the pricing and any potential costs associated with transferring data to the cloud.
    3. Data security: When transferring data to the cloud, it's essential to consider the security of your data. Ensure that the cloud service provider has adequate security measures in place to protect your data during the transfer and while stored in the cloud.
    4. Compatibility and file formats: Ensure that the cloud service you choose supports the file formats used by your NAS device. Some cloud services may have limitations on the types of files they can store or may require specific software for compatibility.
    5. Storage capacity and costs: Cloud services typically charge for storage space, so consider the amount of data you need to transfer and the cost implications of storing it in the cloud. If you have a large amount of data, it may be more cost-effective to use a NAS with higher storage capacity.
    6. Data transfer reliability: Depending on the size of the data being transferred and the stability of your internet connection, there is a possibility of data transfer interruptions or failures. It's advisable to have a backup plan or consider using a reliable file transfer protocol to minimize the risk of data loss.
    7. Local access and redundancy: Consider whether you still need local access to the data stored on your NAS device. If you rely solely on cloud storage, ensure you have a backup plan in case of internet outages or other issues that may prevent access to your data.

    Overall, carefully assess your requirements, the limitations of your NAS device, and the capabilities and costs of various cloud services before copying data from your NAS to the cloud.

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