VDI is an integrated solution of hardware, software andmanagement tools to provide a replacement for standarddesktop deployments.(Swsoft, 2013)The design behind Virtual Desktop Infrastructure (VDI) is torun desktop operating systems and applications inside virtualmachines that reside on servers in the data centre. Usersaccess the virtual desktops and applications from a desktop PCclient or thin client using a remote display protocol and getalmost the full features as if the applications were loaded ontheir local systems, with the difference being that theapplications are centrally managed.(Swsoft, 2013)
VDI IN DIAGRAMESX ServerVirtual Center3332 221• Connection using remotedisplay software (e.g.RDP, VNC, etc.)21• Virtual desktops hostedon VMware VirtualInfrastructure• Virtual Infrastructureoptimizes and managesservers to deploydesktopsVirtual DesktopsSecure Data Center3• Clients can be adesktop, a laptop or aspecialized thin client• Displays desktop ofremote virtual machine(Omaha, 2006)
• Users can access their virtual desktopfrom their home PC , mobile devices orfrom office work stations.VDI connectsits user to the servers using remotedesktop protocol• Remote desktop sessions are providedto users using two types of services atthe server end one is virtual machinebased service and the other is sessionbased service.• The internal architecture of VDIconsists of two layers, they are asfollows:The core layer consists of all thephysical resources such asnetwork, storage and serversAt the top of the core layer thereare virtual machines runningwhich are connected to the corelayer.The virtual machine consists ofOperating system and application.(Omaha, 2006)
• Efficient use of CPU and memory resources• Reduced desktop downtime and increased availability• Easy remote access for end users to their desktop,through various devices• New users can be up and running quickly• Centralized Client OS Management• Rapid Client Deployment• Reduction in desktop support costs• Access to data is much improved as it is happening overfast networks within the datacenter
• Security: Data and applications reside in secure datacentres• Recoverability: VMs and data are backed up &snapshots occur in data center so local desktop data canbe easily recovered• Mobility: Users can connect from any device anywhereand have same desktop experience• Reduces power consumption by using thin clients on thedesktop and energy efficient servers in the Data Center
• Managing multiple desktop and applications for which itis getting more difficult and expensive.• Keeping updates to new operating systems andmaintaining security for every computer is also verydifficult.• Allows users to instantly work from anywhere with noadvanced notice.• Users are free to install whatever else they want on theirdevices.• Users may ignore instructions and fail to install updateswhich can result in a comprised system ifinfected.(VmWare, n.d)
• Bell Canada had a variety of issues that led it to VDI. It had tosupport 8,000 call centre agents and faced rising support costs andhardware attrition issues. It had to provide workers in customerlocations with secure and locked down systems. And it needed todeploy 400 desktops within a three week period. To address all ofthese issues, Bell Canada selected a solution that used a virtualdesktop infrastructure. This enabled the company to quickly deploynew systems, centralize management, reduce total cost ofownership, and provide security even when the workers were incustomer locations. Additionally, it gave Bell Canada hardwareindependence, so partners can choose any system as long as itruns Windows and supports the Windows XP RDP (remote desktopprotocol).
• Another early adopter is Wamego TelecommunicationsCo. (WTC). The company provides telecommunications,Internet, telecom services over the Internet, and cableTV services in the Kansas River Valley. Going through aperiod of tremendous growth, the company moved tovirtualized servers to cut costs. They realized severalbenefits including Reduced deployment time from hoursto minutes, Centralised, simplified and Secured Desktopmanagement, Profit of 600$ per PC.
• The future of VDI looks bright. Agent less security is anenabling technology that will let VDI go further for thingslike consumer hosted desktops in the cloud and supportfor mobile devices using virtual machines. In addition tothese the more we deploy VDI servers and thin clients,the more we can save power consumption and cost.
• Virtual Desktop Infrastructure acceptance is becomingmore widespread every day with numerous companiesturning to Virtual Desktop Infrastructure technology fortheir servers and in their data centres to simplifyadministration and to reduce management chores. So ifyou seek to extend the life of your pc or end points,enjoy data accessibility, simplify security of desktops,improve administration and manageability of desktops,cost and risk reduction, improved productivity withinyour computing enterprise, help yourself today and planyour future with VDI.
• Swsoft (2013) Virtual desktop infrastructure. Available at:http://www.networksasia.net/system/files/whitepaper/SWSoft_Virtual_Desktop_WP.pdf (Accessed: April 07 2013).• Omaha , V. (2006) Virtual desktop infrastructure(VDI). Available at:ftpsite.vmware.com/.../VDI_Connection_Broker_Partners.ppt (Accessed:April 07 2013).• Patrick, R. (2013) Virtual desktop infrastructure(VDI) overview. Available at:http://www.virtualizationadmin.com/articles-tutorials/vdi-articles/general/virtual-desktop-infrastructure-overview.html (Accessed: April07 2013).• Ziff, D. (2013) Virtual desktop infrastructure. Available at:http://www.vmware.com/pdf/virtual_desktop_infrastructure_wp.pdf(Accessed: April 07 2013).
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