How to recover data from Synology DiskStation DS2415+ 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 DiskStation DS2415+

Synology DiskStation DS2415+ NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from DiskStation DS2415+.

How to recover data from NAS Synology DiskStation DS2415+

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.

How can RAID (Redundant Array of Independent Disks) configurations impact data loss in NAS Synology DiskStation DS2415+ devices?

RAID configurations can significantly impact data loss in NAS Synology DiskStation DS2415+ devices. Here are a few ways RAID can affect data loss:

  1. Redundancy: RAID configurations like RAID 1, RAID 5, or RAID 6 provide redundancy by distributing data across multiple disks. This redundancy helps protect against data loss in case of a disk failure. If one disk fails, the data can be rebuilt from the remaining disks. This reduces the risk of data loss due to hardware failures.
  2. Hot Spare: Some RAID configurations support a hot spare disk, which acts as a standby disk that automatically replaces a failed disk in the array. This minimizes the downtime and reduces the risk of data loss during the disk replacement process.
  3. Data Striping: RAID configurations like RAID 0 use data striping, where data is distributed across multiple disks to improve performance. However, RAID 0 does not provide redundancy, so if any of the disks fail, all the data on the array can be lost. It is important to note that RAID 0 should be avoided if data loss is a concern.
  4. Rebuild Time: When a disk fails in a RAID array, the data from the failed disk needs to be rebuilt onto a new disk. The time taken for this rebuild process depends on the RAID configuration and the size of the disks. During the rebuild process, there is a higher risk of data loss if another disk fails. It is crucial to monitor the array and replace failed disks promptly to minimize the risk of data loss.
  5. RAID Controller Failure: In some cases, the RAID controller itself can fail, leading to data loss. It is important to choose a reliable NAS device like Synology DiskStation DS2415+ that has a robust RAID controller and regular firmware updates to address any potential issues.

It is important to regularly backup data from NAS devices to an external location or use additional redundancy measures like offsite replication to further protect against data loss.

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

Although NAS DiskStation DS2415+ 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 DiskStation DS2415+. 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

DiskStation DS2415+ has 12 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 DiskStation DS2415+ 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


We will be happy to answer your questions!

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 DiskStation DS2415+, 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 is DLNA and how does it work?

    DLNA stands for Digital Living Network Alliance. It is a set of guidelines and standards that allows devices to share digital media content over a home network. DLNA enables seamless communication between various devices, such as smartphones, tablets, computers, TVs, and audio systems, to stream and share media files like photos, videos, and music.

    DLNA works by establishing a local area network (LAN) within a home or office environment. Devices that are DLNA-certified adhere to the DLNA guidelines and can discover and connect to each other on the network. This allows them to share and stream media content without the need for complex setup or additional software.

    The DLNA architecture consists of three main components: media servers, media renderers, and control points.

    1. Media Servers: These devices store and organize the media content. They make the content available to other devices on the network. Examples include computers, NAS (Network Attached Storage) devices, or even smartphones with media server functionality.
    2. Media Renderers: These devices can play or display the media content received from the media servers. Examples include TVs, speakers, game consoles, or smartphones with media player capabilities.
    3. Control Points: These devices act as a remote control, allowing users to browse, select, and control media playback on the media renderers. Control points can be smartphones, tablets, or computers running DLNA-compatible applications.

    When a DLNA-certified device is connected to the network, it automatically discovers and lists available media servers. Users can then browse and select media files from the server using a control point. The control point sends a command to the media renderer, instructing it to play the selected media file. The media server then streams the content directly to the media renderer over the network, enabling seamless media playback.

    DLNA supports various media formats and codecs, ensuring compatibility across different devices. It simplifies the process of sharing and streaming media content, allowing users to enjoy their digital media seamlessly on different devices throughout their home network.

  • How does a NAS Synology DiskStation DS2415+ utilize the DLNA protocol?

    The Synology DiskStation DS2415+ is a network-attached storage (NAS) device that supports the DLNA (Digital Living Network Alliance) protocol. DLNA allows the DiskStation to act as a media server and stream multimedia content to DLNA-certified devices such as smart TVs, game consoles, and media players.

    Here's how the DS2415+ utilizes the DLNA protocol:

    1. Media Server: The DiskStation DS2415+ has a built-in media server application called "Media Server." This application scans the multimedia files stored on the NAS and organizes them into a media library. It supports various multimedia formats like videos, photos, and music.
    2. DLNA Certification: The DS2415+ is DLNA-certified, which means it adheres to the DLNA guidelines and standards. This certification ensures compatibility with other DLNA-certified devices, allowing seamless streaming and sharing of media content.
    3. Media Indexing: The DiskStation indexes the multimedia files in its media library, creating a database that includes information about the files, such as metadata, thumbnails, and file locations. This indexing process helps in quick searching and browsing of media content.
    4. Media Streaming: Once the media files are indexed, the DS2415+ can stream them to DLNA-certified devices over the network. DLNA devices can discover the DiskStation as a media server and access its media library. Users can browse and select the desired content on their DLNA devices, and the DiskStation streams it to the device for playback.
    5. Transcoding: The DS2415+ also supports on-the-fly transcoding of media files. This means that if a DLNA device doesn't support the format or codec of a particular media file, the DiskStation can convert it into a compatible format in real-time. This ensures that the media content can be played on the target device without any compatibility issues.

    Overall, the DS2415+ utilizes the DLNA protocol to provide a seamless media streaming experience, allowing users to access and enjoy their multimedia content on various DLNA-certified devices throughout their home network.

  • What are the benefits of using DLNA with a NAS Synology DiskStation DS2415+ for media streaming and sharing?

    Using DLNA with a NAS Synology DiskStation DS2415+ for media streaming and sharing offers several benefits:

    1. Easy media sharing: DLNA allows you to easily share media content, such as photos, videos, and music, between different devices connected to your network. With a Synology DiskStation DS2415+, you can store all your media files in one central location and access them from various devices.
    2. Cross-platform compatibility: DLNA is a widely supported standard, which means that you can stream and share media content across different platforms and devices. Whether you have a Windows PC, Mac, smartphone, smart TV, or gaming console, DLNA ensures that your media files can be accessed and played seamlessly.
    3. Hassle-free setup: Setting up DLNA on a Synology DiskStation DS2415+ is straightforward. The DiskStation comes with built-in DLNA server software, such as Synology Media Server, which allows you to easily configure and manage your media library. You can organize your media files into different folders, create playlists, and customize settings to suit your preferences.
    4. Streaming to multiple devices: DLNA enables you to stream media content to multiple devices simultaneously. Whether you want to watch a movie on your TV, listen to music on your smartphone, or view photos on your tablet, DLNA allows you to stream content to different devices without any interruption.
    5. Remote access: With DLNA and a Synology DiskStation DS2415+, you can access your media files remotely. This means that even when you are away from home, you can still stream and enjoy your media content on your mobile device or laptop, as long as you have an internet connection.
    6. Transcoding capabilities: Some DLNA servers, including Synology Media Server, offer transcoding capabilities. This means that if a device does not support a specific media format, the server can convert the file on-the-fly to a compatible format for seamless playback. This ensures that your media files can be accessed and played on a wide range of devices, regardless of their supported formats.

    Overall, using DLNA with a NAS Synology DiskStation DS2415+ simplifies media streaming and sharing, enhances compatibility, and provides convenient access to your media library from various devices.

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