Red Hat ENTERPRISE VIRTUALIZATION FOR DESKTOPS Bedienungsanleitung PDF herunterladen (Seite 3)

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Enterprise Virtualization for Desktops

BENEFITS OF DESKTOP VIRTUALIZATION

The advent of virtualization technology on x86 platforms has allowed a radically new, cost-effective model

of desktop delivery. It allows IT to centrally manage, maintain, and enforce policies on desktops in a much

more effective and holistic manner than traditional desktops (individual PCs running an operating system

(OS) and applications) and legacy SBC/terminal services solutions (shared OS and applications). This enables

bettercomplianceandalsoleadstoasignicantreductioninthetotalcostofownership.Inaddition,virtual

desktops can enable powerful new functionality for end users.

There are several different models with which an enterprise can deploy virtual desktops:

Hosted virtual desktops: The user’s desktop is a virtual machine (virtual desktop) running on a server •

in the datacenter. The user connects to it from any client that has a browser and a remote connection

protocol. The client could be a thin client or a repurposed older PC.

Client-based virtual desktops: In this model, the virtual desktop runs on the client (physical desktop) itself.•

ThispaperdiscussesindepththebenetsofthehostedvirtualdesktopmodelandhighlightsRedHat

solutions.ItalsocoverssomeofthesignicantdifferencesbetweenRedHatsolutionsandexistinghosted

virtual desktop solutions.

BENEFITS FOR IT DEPARTMENTS

FromanITperspective,virtualdesktopsallowmanybenetsrelativetotraditionaldesktopdeliverymodels

(physical desktops and terminal services).

ADVANTAGES RELATIVE TO TRADITIONAL OR PHYSICAL DESKTOPS

Security and compliance: Data resides within physically secured datacenter, rather than on less-secure •

client devices.

Rapid provisioning: Desktops can be centrally provisioned, maintained, and de-provisioned as required.•

Centralized storage and back-up: Entire desktop images can be centrally backed up using the enterprise’s •

storage infrastructure.

Signicantlyreduceddesk-sidevisits:Becauseauser’sPCisnowavirtualmachineorale,itcanbe•

backed up and restored very easily. The ability to snapshot a virtual desktop and “instantly re-image” it

signicantlyreducesthecostofsupport.

Highavailability:Intraditionaldesktopmodels,ifauser’sharddiskcrashesitleadstoasignicant•

amount of downtime. In the case of virtual desktops, hard disk failures cause no downtime and no support

overhead for IT.

Canonical hardware for desktops instead of multiple classes of machines: Virtualization enables •

a canonical view of everything from the hardware to the OS and applications. Hence, IT organizations

do not have to spend an inordinate amount of time testing and regression testing applications and

operatingsystemsonmultipleclassesofhardwarewithdifferentdrivers.Thisgreatlysimpliesdesktop

image management.

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Red Hat ENTERPRISE VIRTUALIZATION FOR DESKTOPS Bedienungsanleitung Seite 3