Frequently Asked Questions


What are the benefits of using file-sharing protocols in embedded device networks?

File sharing enables multiple devices to remotely browse each other's shared folders, and to read, write, edit, copy, delete and update these files. All of these operations can be done without the need to transfer entire files to/from the device's local disk or memory. Using file sharing, embedded devices are able to reduce precious and costly storage space requirements as well as speed up response by eliminating the time needed to transfer files. File sharing also enables multiple devices to access and update the same file, while preventing conflicts with sophisticated file-sharing and locking semantics. All of the above are fundamental requirement for embedded device networks.


YNQ™ features automatic device appearance under "My Network Places". What benefits does this feature provide to the end user?

YNQ™ implements the Browser Host Announcement mechanism, which allows devices to automatically appear on any PC in the form of icons under "My Network Places" (or "Network Neighborhood"). Users are not required to perform complex installation procedures, configurations or driver installations when setting up and connecting devices to the network. For any end user familiar with the Windows environment, working with "My Network Places" is simple and intuitive, thus making the embedded device application easier to install and deploy.


Why use SMB /CIFS protocol with embedded devices?

Windows is by far the dominant operating system today, accounting for over 90% of computers worldwide. As the embedded systems market and applications expand, so does the need to provide file-sharing connectivity with Windows-based networks. And since SMB /CIFS is the native file sharing protocol and the basis for all Windows networks, it is the natural choice.


How do you compare YNQ™ SMB client and SMB server implementation to Samba?

Samba provides full SMB (CIFS) file sharing implementation available only for Unix / Linux platforms. YNQ™ is however easily portable to any platform. YNQ™ has a much smaller footprint and provides high level of customization. Furthermore, YNQ™ grants a commercial license, while modern Samba comes under GPL3 (general public license level 3). Finally, Visuality Systems provide a 24/7 customer support by email, phone or even on premise to guide through integration steps, provide fixes if needed and send periodical updates.


Why use SMB when FTP is available?

In contrast to FTP, which copies files, SMB protocol grants file sharing. For instance, a text editor or MS Word, when working over SMB, opens a remote file in its original location. Besides, SMB provides better performance and grants higher security level.


Why use SMB when NFS is available?

NFS is only natively available on Linux/Unix platforms. Using it on a Windows machine is not easy, if at all possible. Besides, NFS is considered to be less secure than the encrypted SMB protocol.


Can I run YNQ™ on my platform, which is a very specific, real-time OS?

YNQ™ was successfully ported to tens of different platforms. Once your OS provides a TCP/IP stack, YNQ™ Client will run on it. For YNQ™ Server, you will also need a local file system. Adopting YNQ™ to another OS is called "porting".


How complicated is to port YNQ™ on my platform?

Depending on your platform, it may take from a couple of days to a couple of weeks. For a Posix-compliant OS, it should not take more than two days.


How can Visuality Systems assist us in the process of YNQ™ porting?

This process is very well documented in "YNQ™ Porting and Integration Guide". Also, we provide a 24/7 hotline for your engineers, as well as email support. In a more complicated case, our engineer can come to your location for onsite assistance.


What is YNQ™ "Integration"?

This refers to fine tuning per project. Even after being ported to your OS, YNQ™ may require additional adjustment on a per-project basis.


end faq


Why should I use jNQ?

jNQ is the only viable, commercial Java SMB solution that comes with round-the-clock client assistance.


What functionality makes jNQ unique?

jNQ is the only Java SMB solution that supports SMB 3.1.1 with its pre-logon authentication. According to Microsoft, this method prevents the least possibility of breach inside SMB traffic.


How can I evaluate jNQ?

An evaluation package is available. To obtain the evaluation package, please contact Visuality Systems at: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.


What kind of documentation is available with the jNQ package?

The jNQ package come with a complete Javadoc reference.


Does jNQ have an open source version?

No, jNQ comes with a commercial licence.


Is it complicated to start using jNQ?

jNQ API is straightforward and intuitive, and allows for a quick start in just a couple of hours. Also, jNQ documentation comes with many examples that depict typical usage. Of course, using advanced jNQ features, such as network investigation, will require more effort.


Does jNQ support older SMB versions?

Yes, jNQ can connect over any SMB dialect, starting from SMB1 up to the latest SMB version.


On which platforms has jNQ been tested?

jNQ was thoroughly tested on Oracle Java, IBM Java and several Android platforms.


How is jNQ tested?

Each jNQ release is tested with a rich set of tests, which include:

  • Functional tests which enumerate all possible combinations of jNQ API
  • Performance tests
  • Stress tests, including concurrent runs


What kind of authentications are supported by jNQ?

jNQ supports all means of authentication available with SMB – Kerberos and NTLMSSP.


Does jNQ support smart card authentication?

Yes, this is available through several Kerberos options.


Is jNQ thread-safe?

jNQ is fully thread-safe. It has been tested in a multi-thread environment.


Does jNQ support streams?

Yes, jNQ supports inputFileStream and OutputFileStream.


What performance features does jNQ have?

jNQ offers concurrent reads and writes.


end faq

NQ™ Storage

Why is SMB essential for a Storage solution when we can use NFS?

With NFS, your solution will be limited to Data Centers with Linux/Unix machines only. When Windows machines are involved, SMB becomes a must.


Is NQ™ Storage a complete Storage solution?

Generally speaking, it is not. NQ™ Storage is a front-end for an existing Storage solution. NQ™ Storage comes with an off-the-shelf solution for Linux platforms. You can use this solution as a standalone server, but not as a cluster.


How to integrate NQ™ Storage into our product?

In addition to porting and integration efforts, NQ™ Storage requires integration with a distributed file system backend, which requires another API.


Which SMB does NQ™ Storage support?

NQ™ Storage supports all SMB dialects up to the latest SMB3.1.1



Do you support RDMA?

Yes. NQ™ Storage includes SMBD over RDMA transport module. It was tested over Mellanox Infiniband cards.


Is your SMB implementation mature enough to be a front-end for Data Center applications?

Yes. NQ™ Storage was successfully tested as a front-end of several applications, such as Hyper-V, SQL Server, Shadow Copy.


end faq

General FAQ

What is CIFS / SMB?

CIFS (Common Internet File System, formerly SMB) is the file and printer sharing protocol used by Microsoft Windows operating systems to share files and printers across the network.


What is YNQ™?

YNQ™ (Network Quick Embedded) is a CIFS / SMB file sharing middleware solution for embedded operating systems. Using YNQ™, embedded devices based on VxWorks, ThreadX, Embedded Linux, INTEGRITY, iOS and other operating systems can be quickly connected to Windows-centric networks whilst providing full file and printer sharing capabilities.


What is NFS?

Similar to CIFS / SMB, NFS (Network File System) is the file sharing protocol which is used in Unix-based platforms to share files across the network.


Aren't there other file sharing solutions now available for embedded systems?

There are several other file-sharing solutions for embedded systems available today, none which can provide proper CIFS / SMB support. For example, the leading RTOS VxWorks only offers NFS implementation, making it impossible to share files in a Windows native networking environment. Another example is Embedded Linux, which can use Samba as a means to provide CIFS / SMB file sharing. Although Samba is an available working solution, its large memory footprint and lack of support make it a non-viable solution. YNQ™ is the only product available today that provides a complete embedded CIFS / SMB solution regardless of the OS employed.


Why use CIFS / SMB when HTTP and FTP are also available?

HTTP and FTP can be used for file transfer between devices. However, they are not capable of providing file-sharing functionalities. In contrast, CIFS / SMB protocol supports remote file sharing access, thus enabling groups of embedded devices to work together and share documents across any network. Using CIFS / SMB file sharing instead of HTTP and FTP file transfer eliminates the need to transfer files between devices, which in turn reduces the need for expensive storage space and speeds up overall response time.


Why do I need SMB3? Isn't SMB2 enough for me?

SMB3 was introduced to answer two main challenges: 1) SMB encryption and 2) clustering. SMB2 lacks both of these.


end faq

Follow Us


Mars 08, 2019

Visuality Systems Visuality Systems annonce la sortie de la dernière version de jNQ, la bibliothèque client Java SMB, version 1.0.2-br-5. Cette version inclut un certain nombre de nouvelles fonctionnalités : capture de paquets internes tels que le trafic IPv6, DNS et Netbios, une commande de montage améliorée, et une recherche de répertoire améliorée avec reconnaissance géométrique. De plus, de nombreux bugs ont été corrigés.


Décembre 16, 2018

Le Plugfest officiel des tests SMB aura lieu du 28 au 31 janvier 2019 à l'hôtel Sheraton Tel-Aviv. Quatre jours de tests de clients et de serveurs SMB, ouverts à toute entreprise qui souhaite tester ses implémentations SMB. Inscrivez-vous en suivant le lien ci-dessous.

EMEA SMB Plugfest

Novembre 26, 2018

Visuality Systems annonce la transition vers le système de développement Agile dont l'un des nombreux avantages comprend la livraison de mises à jour de Visuality entièrement testées dans un cycle de temps très court. En outre, Visuality Systems a mis en place un service d'assistance en ligne qui offre une interaction simple et efficace du client avec l'équipe de support technique de Visuality Systems.

Inscription au service d'assistance


Novembre 06, 2018

Visuality Systems sera l'un des sponsors de la conférence SDC EMEA qui se tiendra à l'hôtel Sheraton, Tel-Aviv, Israël, le 30 janvier. L'événement se tiendra en même temps qu'un Plugfest de test SMB3 qui se tiendra du 28 au 31 janvier.

Voir le lien


Août 12, 2018

Les utilisateurs de Windows XP et Server 2003 peuvent désormais passer de la pile SMB1, qui n'existe plus, au protocole SMB3 crypté à jour avec le dernier serveur NQE.


Juillet 31, 2018

Visuality Systems a publié jNQ™ 1.0.1 en ajoutant des fonctions de sécurité et des améliorations de performance à la librairie Java SMB3.1.1 NQ.