What is DLNA and how does it work?

DLNA stands for Digital Living Network Alliance. It is a set of guidelines and specifications that enable devices to share media content seamlessly over a home network. DLNA allows different devices, such as smartphones, tablets, computers, smart TVs, and game consoles, to communicate and stream media files like photos, videos, and music.DLNA works by establishing a network connection between DLNA-certified devices. The devices must be connected to the same local network, either through Wi-Fi or Ethernet. Once connected, DLNA devices can discover and communicate with each other using the Universal Plug and Play (UPnP) protocol.When a DLNA device wants to stream media content, it sends a request to the other DLNA devices on the network. The devices respond by sharing a list of available media files and their capabilities. The requesting device can then select a media file and request it for playback.DLNA supports various media formats and codecs, allowing devices to transcode or convert the media files to a compatible format if necessary. This ensures that media files can be played on different devices, regardless of their supported formats.Overall, DLNA simplifies the process of sharing and streaming media content within a home network, providing a convenient way to access and enjoy multimedia files across multiple devices.

How does a NAS (Network Attached Storage) device like the Promise Apollo Cloud 2 Duo utilize DLNA?

The Promise Apollo Cloud 2 Duo, like other NAS devices, can utilize DLNA (Digital Living Network Alliance) technology to provide media streaming capabilities. DLNA allows the NAS device to act as a media server and share media files such as photos, videos, and music with other DLNA-certified devices on the same network.Here's how the Promise Apollo Cloud 2 Duo utilizes DLNA:Media Storage: The Apollo Cloud 2 Duo provides a large storage capacity where users can store their media files. It acts as a centralized repository for all the media content.DLNA Server: The NAS device runs a DLNA server software that organizes and indexes the media files stored on its storage. It creates a media library with details like metadata, album art, and file information.Media Streaming: DLNA-certified devices like smart TVs, game consoles, smartphones, or tablets can connect to the Apollo Cloud 2 Duo over the network. These devices can access the DLNA server running on the NAS and browse the media library.Media Playback: Once connected, DLNA-enabled devices can stream media content directly from the NAS to their respective media players. For example, a smart TV can play videos stored on the Apollo Cloud 2 Duo, while a smartphone can stream music or view photos.Remote Access: Some NAS devices, including the Apollo Cloud 2 Duo, offer remote access capabilities. This means that DLNA-enabled devices outside the local network can also access and stream media content from the NAS over the internet. Users can access their media files from anywhere, as long as they have an internet connection.Overall, the Promise Apollo Cloud 2 Duo leverages DLNA technology to provide seamless media streaming and sharing capabilities, allowing users to enjoy their media content on various devices throughout their home network.

What are the benefits of using DLNA with a NAS like the Promise Apollo Cloud 2 Duo?

Using DLNA with a NAS (Network Attached Storage) like the Promise Apollo Cloud 2 Duo offers several benefits:Media streaming: DLNA enables seamless streaming of media files from the NAS to DLNA-compatible devices such as smart TVs, gaming consoles, smartphones, and tablets. It allows you to access and enjoy your media library without the need for additional cables or transferring files to different devices.Centralized storage: By using a NAS, you can store all your media files in one central location, making it easy to manage and access your content. The Promise Apollo Cloud 2 Duo provides ample storage capacity, allowing you to store and organize large collections of photos, videos, and music.Multi-device support: DLNA is compatible with a wide range of devices, including those running different operating systems. This means you can stream media from the NAS to devices regardless of whether they are running Windows, macOS, iOS, Android, or other platforms. DLNA ensures cross-platform compatibility and a consistent streaming experience.User-friendly interface: NAS devices like the Promise Apollo Cloud 2 Duo often come with user-friendly interfaces and apps that make it easy to manage and control your media library. You can use these interfaces to browse, search, and play media files, create playlists, and customize your streaming experience.Remote access: DLNA-enabled NAS devices often offer remote access capabilities. This means you can access your media files stored on the NAS even when you are away from home. You can stream your media library over the internet, allowing you to enjoy your content while traveling or when not physically connected to the NAS.Expandable storage: NAS devices like the Promise Apollo Cloud 2 Duo often support expandable storage options, such as adding additional hard drives or upgrading the existing ones. This allows you to increase your storage capacity as your media collection grows, ensuring you have enough space to store all your files.Overall, using DLNA with a NAS like the Promise Apollo Cloud 2 Duo provides a convenient and efficient way to store, manage, and stream your media files across multiple devices, enhancing your media consumption experience.

Best Practices for Data Recovery from NAS Promise Apollo Cloud 2 Duo RAID Array Failures

Name: How to recover data from a Promise
Uploaded: 2024-05-28T15:29:55+03:00
Description: How to recover data from a Promise

Recovering data from a failed ⭐ NAS RAID array? Use these best practices for RAID level understanding, data redundancy, and selecting effective recovery software.

Best Practices for Data Recovery from NAS Promise Apollo Cloud 2 Duo RAID Array Failures

Data Recovery Tool

Promise Apollo Cloud 2 Duo NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from Apollo Cloud 2 Duo.

Contents

Why can’t ordinary software tools restore files from RAID?
How to take hard disks out of the NAS and connect them to a PC?

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.

Is there a risk of data loss if a NAS Promise Apollo Cloud 2 Duo device is physically damaged or stolen?

Yes, there is a risk of data loss if a NAS Promise Apollo Cloud 2 Duo device is physically damaged or stolen. The device stores data on its internal hard drives, and if the device is damaged or stolen, the data stored on it may become inaccessible or lost. It is always recommended to have a backup of important data stored on any device, including NAS devices, 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 Apollo Cloud 2 Duo 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:

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.
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.
Make sure to mark each hard disk in accordance with how they were installed inside the NAS.
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.

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How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Promise Apollo Cloud 2 Duo. 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 Promise

Apollo Cloud 2 Duo has 2 HDD slots, and it supports the following array types:

RAID 0;
RAID 1;
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:

Make sure that you have enough free space to save the image. The image file size usually equals the disk size.
Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.
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.
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.

Where are user’s files stored?

The Promise Apollo Cloud 2 Duo 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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We will be happy to answer your questions!

Comments (3)

Hetman Software: Data Recovery 9.08.2022 12:31 #

If you want to ask a question about data recovery, from NAS Apollo Cloud 2 Duo, feel free to leave a comment!

Reply
Billy Dalton 7.09.2023 01:43 #

Are there any specific recovery methods for NAS Promise Apollo Cloud 2 Duo devices with striped or mirrored data configurations?

Reply
- Hetman Software 7.09.2023 02:59 #
  
  Yes, there are specific recovery methods for NAS Promise Apollo Cloud 2 Duo devices with striped or mirrored data configurations.
  For striped configurations (RAID 0), where data is split across multiple drives for increased performance, the recovery process can be more challenging. In case of a drive failure, the data stored on that particular drive will be lost. To recover the data, you would need to replace the failed drive and rebuild the RAID array. However, if more than one drive fails in a striped configuration, the data loss will be significant, and it may not be possible to recover the data.
  For mirrored configurations (RAID 1), where data is duplicated on multiple drives for redundancy, the recovery process is relatively simpler. If one drive fails in a mirrored configuration, the data can still be accessed from the remaining drive. To recover the system, you would need to replace the failed drive and rebuild the mirror. The data will be automatically copied from the remaining drive to the new drive during the rebuild process.
  It is important to note that RAID configurations are not a substitute for regular backups. It is always recommended to have a separate backup of your important data to protect against data loss due to various reasons, including hardware failures or accidental deletions.
  
  Reply

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Updated:
28.05.2024 15:29

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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.

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.

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 specifications that enable devices to share media content seamlessly over a home network. DLNA allows different devices, such as smartphones, tablets, computers, smart TVs, and game consoles, to communicate and stream media files like photos, videos, and music.
DLNA works by establishing a network connection between DLNA-certified devices. The devices must be connected to the same local network, either through Wi-Fi or Ethernet. Once connected, DLNA devices can discover and communicate with each other using the Universal Plug and Play (UPnP) protocol.
When a DLNA device wants to stream media content, it sends a request to the other DLNA devices on the network. The devices respond by sharing a list of available media files and their capabilities. The requesting device can then select a media file and request it for playback.
DLNA supports various media formats and codecs, allowing devices to transcode or convert the media files to a compatible format if necessary. This ensures that media files can be played on different devices, regardless of their supported formats.
Overall, DLNA simplifies the process of sharing and streaming media content within a home network, providing a convenient way to access and enjoy multimedia files across multiple devices.
How does a NAS (Network Attached Storage) device like the Promise Apollo Cloud 2 Duo utilize DLNA?
The Promise Apollo Cloud 2 Duo, like other NAS devices, can utilize DLNA (Digital Living Network Alliance) technology to provide media streaming capabilities. DLNA allows the NAS device to act as a media server and share media files such as photos, videos, and music with other DLNA-certified devices on the same network.
Here's how the Promise Apollo Cloud 2 Duo utilizes DLNA:
1. Media Storage: The Apollo Cloud 2 Duo provides a large storage capacity where users can store their media files. It acts as a centralized repository for all the media content.
2. DLNA Server: The NAS device runs a DLNA server software that organizes and indexes the media files stored on its storage. It creates a media library with details like metadata, album art, and file information.
3. Media Streaming: DLNA-certified devices like smart TVs, game consoles, smartphones, or tablets can connect to the Apollo Cloud 2 Duo over the network. These devices can access the DLNA server running on the NAS and browse the media library.
4. Media Playback: Once connected, DLNA-enabled devices can stream media content directly from the NAS to their respective media players. For example, a smart TV can play videos stored on the Apollo Cloud 2 Duo, while a smartphone can stream music or view photos.
5. Remote Access: Some NAS devices, including the Apollo Cloud 2 Duo, offer remote access capabilities. This means that DLNA-enabled devices outside the local network can also access and stream media content from the NAS over the internet. Users can access their media files from anywhere, as long as they have an internet connection.
Overall, the Promise Apollo Cloud 2 Duo leverages DLNA technology to provide seamless media streaming and sharing capabilities, allowing users to enjoy their media content on various devices throughout their home network.
What are the benefits of using DLNA with a NAS like the Promise Apollo Cloud 2 Duo?
Using DLNA with a NAS (Network Attached Storage) like the Promise Apollo Cloud 2 Duo offers several benefits:
1. Media streaming: DLNA enables seamless streaming of media files from the NAS to DLNA-compatible devices such as smart TVs, gaming consoles, smartphones, and tablets. It allows you to access and enjoy your media library without the need for additional cables or transferring files to different devices.
2. Centralized storage: By using a NAS, you can store all your media files in one central location, making it easy to manage and access your content. The Promise Apollo Cloud 2 Duo provides ample storage capacity, allowing you to store and organize large collections of photos, videos, and music.
3. Multi-device support: DLNA is compatible with a wide range of devices, including those running different operating systems. This means you can stream media from the NAS to devices regardless of whether they are running Windows, macOS, iOS, Android, or other platforms. DLNA ensures cross-platform compatibility and a consistent streaming experience.
4. User-friendly interface: NAS devices like the Promise Apollo Cloud 2 Duo often come with user-friendly interfaces and apps that make it easy to manage and control your media library. You can use these interfaces to browse, search, and play media files, create playlists, and customize your streaming experience.
5. Remote access: DLNA-enabled NAS devices often offer remote access capabilities. This means you can access your media files stored on the NAS even when you are away from home. You can stream your media library over the internet, allowing you to enjoy your content while traveling or when not physically connected to the NAS.
6. Expandable storage: NAS devices like the Promise Apollo Cloud 2 Duo often support expandable storage options, such as adding additional hard drives or upgrading the existing ones. This allows you to increase your storage capacity as your media collection grows, ensuring you have enough space to store all your files.
Overall, using DLNA with a NAS like the Promise Apollo Cloud 2 Duo provides a convenient and efficient way to store, manage, and stream your media files across multiple devices, enhancing your media consumption experience.