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into a single product to provide the most appropriate support specific to requirements. The degrees of independent functionality of the client device is necessarily interdependent with the server location and access strategy. And virtualization is not strictly required for remote control to exist. Virtualization is employed to present independent instances to multiple users and requires a strategic segmentation of the host server and presentation at some layer of the host's architecture. The enabling layer—usually application software—is called a
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241:(DaaS), which provides a higher level of automation and real multi-tenancy, reducing the cost of the technology. The DaaS provider typically takes full responsibility for hosting and maintaining the computer, storage, and access infrastructure, as well as applications and application software licenses needed to provide the desktop service in return for a fixed monthly fee.
60:, to provide a comprehensive desktop environment management system. In this mode, all the components of the desktop are virtualized, which allows for a highly flexible and much more secure desktop delivery model. In addition, this approach supports a more complete desktop disaster recovery strategy as all components are essentially saved in the
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virtualization" sounds misleading; this technology is not limited to virtual desktops. User virtualization can be used regardless of platform – physical, virtual, cloud, etc. The major desktop virtualization platform vendors, Citrix, Microsoft and VMware, all offer a form of basic user virtualization in their platforms.
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computing environment. Application execution takes place on a remote operating system which communicates with the local client device over a network using a remote display protocol through which the user interacts with applications. All applications and data used remain on the remote system with only
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Desktop layering is a method of desktop virtualization that divides a disk image into logical parts to be managed individually. For example, if all members of a user group use the same OS, then the core OS only needs to be backed up once for the entire environment who share this layer. Layering can
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User virtualization separates all of the software aspects that define a user’s personality on a device from the operating system and applications to be managed independently and applied to a desktop as needed without the need for scripting, group policies, or use of roaming profiles. The term "user
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Local desktop virtualization is well suited for environments where continuous network connectivity cannot be assumed and where application resource requirements can be better met by using local system resources. However, local desktop virtualization implementations do not always allow applications
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The use of a single shared-server operating system instead of individual desktop operating system instances consumes significantly fewer resources than the same number of VDI sessions. At the same time, VDI licensing is both more expensive and less flexible than equivalent remote desktop licenses.
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runs remotely or locally, on whether the access is required to be constant or is designed to be intermittent, and on whether or not the virtual desktop persists between sessions. Typically, software products that deliver desktop virtualization solutions can combine local and remote implementations
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and backed up through traditional redundant maintenance systems. If a user's device or hardware is lost, the restore is straightforward and simple, because the components will be present at login from another device. In addition, because no data are saved to the user's device, if that device is
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Application virtualization improves delivery and compatibility of applications by encapsulating them from the underlying operating system on which they are executed. A fully virtualized application is not installed on hardware in the traditional sense. Instead, a hypervisor layer intercepts the
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over a network using a remote-display protocol. A VDI service provides individual desktop operating system instances (e.g., Windows XP, 7, 8.1, 10, etc.) for each user, whereas remote desktop sessions run in a single shared-server operating system. Both session collections and virtual machines
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Cloud-hosted virtual desktops can be implemented using both VDI and Remote
Desktop Services-based systems and can be provided through the public cloud, private cloud infrastructure, and hybrid cloud platforms. Private cloud implementations are commonly referred to as "managed VDI".
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in environments where remote access and data security requirements create conflicting requirements that can be addressed by retaining all (application) data within the data center – with only display, keyboard, and mouse information communicated with the remote
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Remote desktop virtualization can also provide a means of resource sharing, to distribute low-cost desktop computing services in environments where providing every user with a dedicated desktop PC is either too expensive or otherwise unnecessary.
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be applied to local physical disk images, client-based virtual machines, or host-based desktops. Windows operating systems are not designed for layering, therefore each vendor must engineer their own proprietary solution.
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For IT administrators, this means a more centralized, efficient client environment that is easier to maintain and able to respond more quickly to the changing needs of the user and business.
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It is also used as a means of providing access to
Windows applications on non-Windows endpoints (including tablets, smartphones, and non-Windows-based desktop PCs and laptops).
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in distributed environments with high availability requirements and where desk-side technical support is not readily available, such as branch office and retail environments.
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VDI implementations allow for delivering personalized workspace back to a user, which retains all the user's customizations. There are several methods to accomplish this.
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VDI shoot-out: Citrix XenDesktop vs. VMware View. Citrix XenDesktop 5.5 and VMware View 5 vie for the most flexible, scalable, and complete virtual desktop infrastructure
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Virtualization shoot-out: Citrix, Microsoft, Red Hat, and VMware. The leading server virtualization contenders tackle InfoWorld's ultimate virtualization challenge
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application, which at runtime acts as if it is interfacing with the original operating system and all the resources managed by it when in reality it is not.
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developed for one system architecture to run on another. For example, it is possible to use local desktop virtualization to run
Windows 7 on top of
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113:. A common implementation of this approach involves hosting multiple desktop operating system instances on a server hardware platform running a
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model. This approach is usually referred to as cloud-hosted virtual desktops. Cloud-hosted virtual desktops are divided into two technologies:
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display, keyboard, and mouse information communicated with the local client device, which may be a conventional PC/laptop, a
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VDI shoot-out: HDX vs. PCoIP. The differences between the Citrix and VMware remote desktop protocols are more than skin deep
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Together, these factors can combine to make remote desktop-based remote desktop virtualization more attractive than VDI.
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Managed VDI, which is based on VDI technology provided as an outsourced managed service, and
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lost, there is much less chance that any critical data can be retrieved and compromised.
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in environments where high network latency degrades the performance of conventional
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Remote desktop virtualization is frequently used in the following scenarios:
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Remote desktop software allows a user to access applications and data on a
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Desktop virtualization implementations are classified based on whether the
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support full desktop based sessions and remote application deployment.
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415:"Configuring the R.D. session host server to host RemoteApp programs"
429:"Configuring virtual desktops for RemoteApp and desktop connection"
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374:"The rising cloud storage market opportunity strengthens vendors"
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offerings tend to be based on desktop-as-a-service technology.
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Remote desktop virtualization implementations operate in a
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from the physical client device that is used to access it.
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One subset of V.D.I., dubbed client-hosted or offline mode
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Remote desktop virtualization can also be provided via
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Desktop virtualization can be used in conjunction with
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Local desktop virtualization implementations run the
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56:and user profile management systems, now termed
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348:"Review: V.D.I. without the server connection"
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41:is a software technology that separates the
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372:Baburajan, Rajani (August 24, 2011).
443:"Desktop virtualization cheat sheet"
391:Oestreich, Ken (November 15, 2010).
34:Virtual Desktop Infrastructure (VDI)
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491:Keith Schultz (December 14, 2011)
481:Keith Schultz (December 14, 2011)
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445:. networkworld.com. Archived from
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227:similar to that provided using a
346:Keith Schultz (16 March 2012).
323:Rouse, Margaret; Madden, Jack.
469:Paul Venezia (April 13, 2011)
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119:Virtual Desktop Infrastructure
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86:Remote desktop virtualization
305:Remote mobile virtualization
254:Local desktop virtualization
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262:on the client device using
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154:Presentation virtualization
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393:"Converged infrastructure"
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180:Application virtualization
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174:Application virtualization
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54:application virtualization
325:"Desktop virtualization"
264:hardware virtualization
39:Desktop virtualization
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18:Desktop Virtualization
512:Centralized computing
284:Intel-based Apple Mac
229:software as a service
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403:on January 13, 2012.
239:Desktop as a service
213:Desktop as a service
69:System architectures
47:application software
431:. 17 November 2009.
417:. 17 November 2009.
378:technews.tmcnet.com
260:desktop environment
195:User virtualization
189:User virtualization
58:user virtualization
43:desktop environment
27:Software technology
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219:Data as a service
16:(Redirected from
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193:Main article:
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449:on 2010-02-27
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522:Thin clients
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451:. Retrieved
447:the original
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401:the original
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352:. Retrieved
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329:. Retrieved
327:. TechTarget
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248:Public cloud
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350:. InfoWorld
272:hypervisors
103:thin client
62:data center
506:Categories
453:2010-03-17
331:January 3,
311:References
217:See also:
115:hypervisor
111:smartphone
105:device, a
90:See also:
80:hypervisor
497:InfoWorld
487:InfoWorld
476:InfoWorld
354:3 January
268:emulation
294:See also
204:Layering
139:client.
282:on an
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356:2013
333:2013
280:OS X
288:x86
266:or
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