How to recover data from Synology ioSafe 1517 NAS

Is your network drive gone, and you are wondering what to do? Has a RAID system crashed, and your files are no longer accessible? Does your device display an error while booting? Have you accidentally rebuilt your RAID system? Are several hard disks out of order?

How to recover data from NAS Synology ioSafe 1517

Synology ioSafe 1517 NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from ioSafe 1517.

How to recover data from NAS Synology ioSafe 1517

Recover data from damaged RAID arrays inaccessible from a computer.

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 Synology 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 excessive drive spin-down or power-saving settings impact data retrieval in case of failure on NAS Synology ioSafe 1517 devices?

Excessive drive spin-down or power-saving settings can potentially impact data retrieval in case of failure on NAS Synology ioSafe 1517 devices.

When drives are spun down or power-saving features are enabled, it means that the drives are not constantly active and are put into a low-power state. While this can help save energy and reduce wear on the drives, it can also cause delays in accessing data when a failure occurs.

In the event of a failure, such as a drive malfunction or a system crash, the NAS device may need to access the data on the drives to recover or rebuild the system. If the drives are in a spin-down state or powered off due to power-saving settings, it may take longer for the NAS device to access the data, leading to potential delays in data retrieval or recovery.

To ensure better data retrieval in case of failure, it is recommended to balance power-saving settings with the need for timely access to data. Some NAS devices allow you to configure the spin-down or power-saving settings based on specific schedules or usage patterns, allowing you to strike a balance between energy efficiency and data accessibility.

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

Although NAS ioSafe 1517 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 Synology ioSafe 1517. 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 Synology

How to recover data from a Synology

ioSafe 1517 has 5 HDD slots, and it supports the following array types:

  • Synology Hybrid RAID (SHR);
  • RAID 6;
  • RAID 5;
  • RAID 10;
  • RAID 1;
  • RAID 0;
  • Basic;
  • JBOD;

NAS supports:

  • Btrfs;
  • EXT4;
  • EXT3 (External Disk Only);
  • FAT32 (External Disk Only);
  • exFAT (External Disk Only);
  • NTFS (External Disk Only);
  • HFS+ (External Disk Read Only);

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 Synology ioSafe 1517 network-attached storage keeps DSM (DiskStation Manager) 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 (1)

  • 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 ioSafe 1517, feel free to leave a comment!
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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, 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.


Questions and answers

  • What are some of the basic features of the NAS Synology ioSafe 1517?

    Some of the basic features of the NAS Synology ioSafe 1517 are:

    1. Robust Disaster Recovery: The ioSafe 1517 is built to withstand disasters such as fire, flood, or other physical damage, providing data protection in extreme conditions.
    2. High Storage Capacity: It supports up to 5 hard drives, allowing for a large storage capacity of up to 70TB (when using 14TB drives).
    3. RAID Support: The NAS supports various RAID configurations (RAID 0, 1, 5, 6, 10, JBOD), providing options for data redundancy and performance optimization.
    4. Scalability: It offers the ability to expand storage capacity by connecting additional expansion units, allowing for future growth.
    5. Data Encryption: The NAS supports AES 256-bit encryption, ensuring data security and privacy.
    6. Multiple Backup Options: It provides various backup options, including local backups, remote backups, and cloud backups, ensuring data protection and redundancy.
    7. High-speed Data Transfer: With its Gigabit Ethernet ports and Link Aggregation support, the NAS offers high-speed data transfer rates for efficient file sharing and multimedia streaming.
    8. Comprehensive File Management: It includes a user-friendly operating system (Synology DiskStation Manager) with a range of file management features, such as file sharing, file syncing, and file versioning.
    9. Multimedia Support: The NAS supports media streaming to various devices, including TVs, computers, and mobile devices, making it suitable for home entertainment purposes.
    10. App Ecosystem: It has an extensive app ecosystem, with a wide range of applications available for download, including surveillance, file syncing, backup, and productivity apps.

    Please note that this information is based on general specifications and features, and it's always recommended to refer to the official product documentation or manufacturer's website for the most accurate and up-to-date information.

  • How does the ioSafe 1517 differ from other NAS devices in terms of its basic features?

    The ioSafe 1517 differs from other NAS devices in several ways in terms of its basic features:

    1. Disaster-proof design: The ioSafe 1517 is built with a rugged and fireproof enclosure, providing protection against physical damages, water submersion, and extreme temperatures. This feature ensures data safety even in catastrophic events.
    2. Data recovery service: In case of any data loss or damage, ioSafe offers a Data Recovery Service, which includes professional forensic recovery techniques. This service is not typically provided by other NAS devices.
    3. Military-grade encryption: The ioSafe 1517 supports AES-256 encryption, which is a high level of encryption used by the military and government agencies. This ensures that data stored on the device remains secure and protected from unauthorized access.
    4. Scalability and expandability: The ioSafe 1517 allows for easy scalability and expandability. It supports up to seven hard drives, and additional expansion units can be connected to increase storage capacity. This makes it suitable for businesses or individuals with growing storage needs.
    5. Multiple RAID configurations: The ioSafe 1517 supports various RAID configurations, including RAID 0, 1, 5, 6, and 10, providing flexibility in data protection and performance optimization. This allows users to choose the most suitable RAID level based on their requirements.

    Overall, the ioSafe 1517 stands out from other NAS devices due to its focus on physical protection, data recovery service, high-level encryption, scalability, and multiple RAID options. These features make it an ideal choice for users who prioritize data security and resilience in challenging environments.

  • Can you provide an overview of the key functionalities and capabilities offered by the NAS Synology ioSafe 1517?

    The NAS Synology ioSafe 1517 is a robust and highly durable network-attached storage device designed to withstand extreme conditions. Here is an overview of its key functionalities and capabilities:

    1. Disaster-proof design: The ioSafe 1517 is built with a fireproof and waterproof enclosure, capable of withstanding temperatures up to 1550°F (843°C) for 30 minutes and submersion in water up to 10 feet (3 meters) for 72 hours. This ensures the safety and protection of your data in case of fire or flood.
    2. High storage capacity: The device supports up to five 3.5-inch or 2.5-inch SATA hard drives, providing a large storage capacity for your files, documents, multimedia, and backups.
    3. RAID support: The ioSafe 1517 supports various RAID configurations, including RAID 0, 1, 5, 6, and 10. This allows for data redundancy, improved performance, and increased storage efficiency.
    4. Scalability: With the expansion unit support, you can connect up to two DX517 expansion units to the ioSafe 1517, expanding the storage capacity further if needed.
    5. Powerful hardware: The device is equipped with a quad-core 2.4 GHz processor and 2GB DDR3 memory (expandable up to 16GB). This ensures smooth performance and efficient data processing.
    6. Versatile connectivity: The ioSafe 1517 offers multiple connectivity options, including four Gigabit Ethernet ports, two USB 3.0 ports, and two eSATA ports. This allows for fast data transfer and easy integration with other devices.
    7. Comprehensive data protection: Synology DiskStation Manager (DSM) software provides a range of data protection features, including snapshot replication, backup solutions, file versioning, and data encryption. These features ensure the security and integrity of your data.
    8. File sharing and synchronization: The device supports various file sharing protocols such as SMB, AFP, NFS, FTP, and WebDAV. It also offers synchronization capabilities with popular cloud services like Dropbox, Google Drive, and Microsoft OneDrive.
    9. Multimedia streaming: The ioSafe 1517 acts as a media server, allowing you to stream and share multimedia content across different devices, including smart TVs, smartphones, and tablets.
    10. Application ecosystem: The device supports a wide range of applications from Synology's Package Center, including productivity tools, surveillance solutions, virtualization environments, and more. This allows you to customize and expand the functionality of your NAS according to your specific needs.

    Overall, the NAS Synology ioSafe 1517 offers a combination of durability, storage capacity, data protection, and versatile functionality, making it an ideal choice for users who require a reliable and secure storage solution in extreme environments.

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