wikademia>Eme at 20:59, 24 June 2013

2013-06-24T20:59:17Z

← Older revision		Revision as of 20:59, 24 June 2013
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	~~{{Infobox software~~
	~~\| name = QVD~~
	~~\| caption = Quality Virtual Desktop (QVD) 3.2~~
	~~\| developer = [[Qindel Group]]~~
	~~\| family = [[Unix-like]]<!--- Do not add Linux or Debian here. They are not families. -->~~
	~~\| latest_release_version = 3.2~~
	~~\| latest_release_date = {{release date\|2012\|12\|21}}<ref name="3.2 launch">[http://theqvd.com/blog/qvd-3-2-with-btrfs-support Blog release: QVD 3.2 Released]</ref>~~
	~~\| operating_system = [[Linux]]~~
	~~\| supported_platforms = [[X86\|i386]], [[X86-64\|amd64]]~~
	~~\| genre = Application Delivery~~
	~~\| license = [[GNU General Public License\|GNU GPL]]~~
	~~\| website = [http://theqvd.com http://theqvd.com]~~
	}}
	'''QVD''' (Quality Virtual Desktop) is a highly scalable, cost effective, easy to manage, open source [[Desktop_virtualization#VDI\|Virtual Desktop Infrastructure]] (VDI) solution built on top of Linux.		'''QVD''' (Quality Virtual Desktop) is a highly scalable, cost effective, easy to manage, open source [[Desktop_virtualization#VDI\|Virtual Desktop Infrastructure]] (VDI) solution built on top of Linux.

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2013-06-24T20:58:37Z

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{{Infobox software
| name = QVD
| caption = Quality Virtual Desktop (QVD) 3.2
| developer = [[Qindel Group]]
| family = [[Unix-like]]
| latest_release_version = 3.2
| latest_release_date = {{release date|2012|12|21}}<ref name="3.2 launch">[http://theqvd.com/blog/qvd-3-2-with-btrfs-support Blog release: QVD 3.2 Released]</ref>
| operating_system = [[Linux]]
| supported_platforms = [[X86|i386]], [[X86-64|amd64]]
| genre = Application Delivery
| license = [[GNU General Public License|GNU GPL]]
| website = [http://theqvd.com http://theqvd.com]
}}
'''QVD''' (Quality Virtual Desktop) is a highly scalable, cost effective, easy to manage, open source [[Desktop_virtualization#VDI|Virtual Desktop Infrastructure]] (VDI) solution built on top of Linux.

Its main purpose is used to access Linux remote desktops a Linux focused VDI.<ref name="QVD Overview">[http://theqvd.com/en/documentation/overview/qvd-overview QVD Overview]</ref> The primary focus is that the infrastructure and the desktops presented to the end user are both in Linux.

== History ==

QVD starts as an open source software alternative to desktop virtualization. It has been created to give a service secure, reliable and easy to manage and furthermore was easy simple to install<ref name="QVD Install video">[http://www.youtube.com/watch?v=cnwJzovxvII QVD How to install]</ref> and manage <ref name="QVD WAT video">[http://www.youtube.com/watch?v=7VUr7acuRHc QVD WAT Video]</ref>.

=== 3.0 ===
QVD 3.0 <ref name="QVD 3.0 release">[https://launchpad.net/~qvd-qindel/+archive/qvd-3.0 QVD 3.0]</ref> was released as 3.0 version due to historical reasons at May 2011. Main Features were:
*<ref name="KVM">[http://www.linux-kvm.org/page/Main_Page KVM]</ref> as hypervisor.
*Connection Broker to work with <ref name="NX">[http://en.wikipedia.org/wiki/NX_technology NX compression protocol]</ref> replacing SSH for SSL.

=== 3.1 ===
QVD 3.1 <ref name="QVD 3.1 release">[https://launchpad.net/~qvd-qindel/+archive/qvd-3.1.0 QVD 3.1 ppa]</ref> was a full refactoring of the product. It was released in October 2012. The main feature in this version was to include linux containers<ref name=lxc>[http://en.wikipedia.org/wiki/Lxc Linux containers]</ref> as hypervisor. That makes possible to increment the number of desktops per physical host.
Other features in this version were:
*Versioning system for images.
*Support to SLES platform.

=== 3.2 ===
QVD 3.2 <ref name="QVD 3.1 release">[https://launchpad.net/~qvd-qindel/+archive/qvd-3.2.0 QVD 3.2 ppa]</ref> was released by December 2012. with the addition of btrfs and suppor for serial ports.

'''Open source project'''
* QVD is a pure Open Source project, accesible to the whole developers community, that means:
** The availability of the source code and the right to modify it is very important. It enables the unlimited tuning and improvement of a software product. It also makes it possible to port the code to new hardware, to adapt it to changing conditions, and to reach a detailed understanding of how the system works. This is why many experts are reaching the conclusion that to really extend the lifetime of an application, it must be available in source form. In fact, no binary-only application more than 10 years old now survives in unmodified form, while several open source software systems from the 1980s are still in widespread use (although in many cases conveniently adapted to new environments). Source code availability also makes it much easier to isolate bugs, and (for a programmer) to fix them.
** The right to redistribute modifications and improvements to the code, permits all the advantages due to the modifiability of the software to be shared by large communities. This is usually the point that differentiates open source software licences from ``nearly free'' ones. In substance, the fact that redistribution rights cannot be revoked, and that they are universal, is what attracts a substantial crowd of developers to work around open source software projects.
** The right to use the software in any way. This, combined with redistribution rights, ensures (if the software is useful enough), a large population of users, which helps in turn to build up a market for support and customization of the software, which can only attract more and more developers to work in the project. This in turn helps to improve the quality of the product, and to improve its functionality. Which, once more, will cause more and more usrs to give the product a try, and probably to use it regularly

== QVD Main Features ==

* High virtual machine density per physichal node due the use of linux containers as hypervisor.
* High Available by design.
* Low bandwitch usage, using NX protocol to deliver desktops to the end-user.
* Self provisionin, via API.
* Client platforms. Linux, Windows, Mac, Android.

== Fundamentals ==
QVD is written in perl and it runs in a Linux OS. As the delivery protocol is using the [[NX technology]], the user desktop runs as a remote X11 session even across slow or low-bandwidth connections. It is possible to run the client on Windows and Linux platforms or via Thin Clients.

The main focus is to provide desktop access for large number of users with a very small footprint for each user session by:
* Using the same OS image for all the users (using overlays)
* Sharing memory between user processes (using LXC)
* Using small bandwidth (using NX)

=== Basics ===
QVD is composed by actors and components.

The QVD’s actors are

* Users (End users): People that work at their desks, using office packages, email, whatever. Generically identified by login and password.
* Virtual Machines: Running Linux Desktops and owned by the users. These VM’s runs under a virtual machine on Linux Nodes.
* Nodes: Physical servers where the VM’s run.
* Images: Templates with shared properties as the applications installed, memory for the VM or space for the user’s home.

The QVD components are

* QVD-Client: The QVD client software that connects with and displays the user's desktop from the server. QVD currently has clients for Windows, Linux, OS X (Beta), and Android.<ref name="QVD OS X Client">[http://theqvd.com/product/download Download QVD]</ref>
* QVD-L7R: Level 7 router. In charge to balance the connections from the QVD-Client to the Virtual Machines and the responsibility for login user before they went into their Virtual Machines.
* QVD-HKD: House keeping daemon. Responsible to interact with the Virtual Machines, starting, stopping, and update the VM’s status in the QVD Database. Currently it supports KVM and LXC as their virtualization models.
* QVD-Database: Holds the status for all users, Vitual Machines, images, hosts. All the platform information is stored in the database.
* QVD-Administrative tools: Composed by CLI and the WAT (Web administration tool) that provides an easy and simple way to administrate the whole platform, from a couple of nodes to hundreds.
* QVD-VMA: The agent that runs in the Virtual Machine, allowing users to connect, enable printer sharing, audio, hooks, etc.

== See also ==
* [[NX technology]]
* [[Kernel-based Virtual Machine]]
* [[LXC]]

== References ==
{{Reflist}}

== External links ==
* [http://books.google.es/books?id=G6eoZwEACAAJ&dq=QVD+(software)&hl=es&sa=X&ei=2ym_UZDOA6fH7AaWy4DQDw&ved=0CFsQ6AEwBA] Desktop Virtualization by Michael Johnson.
* [http://servernews.ru/articles/596207] QVD and Ulteo comparission (in russian).
* [http://theqvd.com http://theqvd.com] QVD homepage
* [https://github.com/theqvd/theqvd] QVD Git.
* [http://www.qindel.com] QIndel Web page
* [http://www.presentingperl.org/ye2010/qvd-virtual-desktop-infrastructure] QVD a virtual desktop infrastructure solution written in perl by Salvador Fandiño.
* [http://www.prlog.org/11993901-quality-virtual-desktop-31-released.html] QVD 3.1 released.
* [http://hteles.wordpress.com/2012/03/22/linux-vdi-qvd-open-source-vdi-software-by-qindel/] Linux VDI – QVD Open Source VDI Software By QINDEL
* [https://play.google.com/store/apps/details?id=com.theqvd.android.client&hl=es] QVD Android client.
* [http://www.winsupsite.com/vdi-for-free-alternatives] VDI for free alternatives
* [http://salons-etudiants.com/videos/?v=7VUr7acuRHc] QVD Wat administration video.

[[Category:Linux software]]
[[Category:Remote administration software]]
[[Category:Remote desktop]]

← Older revision		Revision as of 20:59, 24 June 2013
Line 1:		Line 1:
	~~{{Infobox software~~
	~~\| name = QVD~~
	~~\| caption = Quality Virtual Desktop (QVD) 3.2~~
	~~\| developer = [[Qindel Group]]~~
	~~\| family = [[Unix-like]]<!--- Do not add Linux or Debian here. They are not families. -->~~
	~~\| latest_release_version = 3.2~~
	~~\| latest_release_date = {{release date\|2012\|12\|21}}<ref name="3.2 launch">[http://theqvd.com/blog/qvd-3-2-with-btrfs-support Blog release: QVD 3.2 Released]</ref>~~
	~~\| operating_system = [[Linux]]~~
	~~\| supported_platforms = [[X86\|i386]], [[X86-64\|amd64]]~~
	~~\| genre = Application Delivery~~
	~~\| license = [[GNU General Public License\|GNU GPL]]~~
	~~\| website = [http://theqvd.com http://theqvd.com]~~
	}}
	'''QVD''' (Quality Virtual Desktop) is a highly scalable, cost effective, easy to manage, open source [[Desktop_virtualization#VDI\|Virtual Desktop Infrastructure]] (VDI) solution built on top of Linux.		'''QVD''' (Quality Virtual Desktop) is a highly scalable, cost effective, easy to manage, open source [[Desktop_virtualization#VDI\|Virtual Desktop Infrastructure]] (VDI) solution built on top of Linux.

QVD (software) - Revision history

wikademia>Eme at 20:59, 24 June 2013

wikademia>Eme: by http://en.wikipedia.org/w/index.php?title=QVD_(software)&action=history