XenDesktop-Advanced-Design-桌面虚拟化规划与设计

XenDesktopDesignTianyunLiaoSystemsEngineer|CCIAWhyIsDesignImportant?EnvironmentthatcannotsupportthemorninguserloadAsinglecomponentfails,bringingdowntheentireinfrastructureSluggishvirtualdesktopsbecauseofimproperscaleHypervisorStorageNetworkCPUMemoryAsktherightquestionsWhatuserpatterndoweexpect?Sporadic,9-5,shiftsWhatistherequiredsystemavailability?(9-5,24/7)Whatarethebusinessdriversforvirtualdesktops?High-leveloverviewofgoals/userenvironmentSavecosts,increasesecurity,improveavailabilityLocal,regional,branch,remoteusersAgendaDesktopLayerVirtualizationLayerOSDeliveryLayerApplicationDeliveryLayerDesktopDeliveryLayerReferenceArchitectureDesktopCitrixConfidential-DoNotDistributeDesktopOperatingSystemSelectionWindowsXPRequiresaround5000IOPSeachforstartupPerformedbetteronXenServerandESXthanHyper-VWindows7Optimizedforvirtualizedenvironment(HostIntegrationServices)MoreintelligentstoragemanagementWindows7performedbetteronHyper-VOutperformsWinXPonsameRAM(512/768)DesktopUserLoadEstimatesUserTypeOSvCPUAllocationMemoryAllocationLightWindowsXP1512Windows711024NormalWindowsXP11024Windows712048PowerWindowsXP12048Windows72*3072-4096NotesWindows7assumes32-bit(64-bitrequiresmorememory)WindowsXPbaseimageUniprocessorHAL:give2vCPUsandhypervisorwon’tutilizeMultiprocessorHAL:use1vCPUandwasteresourceswhilesystemtriestoalignprocessorsDesktopBestPracticesDoNOTgivevirtualdesktopsmoreresourcesthanneededDonotovercommitthehypervisorCPUsCalculateforactiveuserspercoreLight:8-10users/coreNormal:6-8users/corePower:4-6users/coreCalculateusersperserver,reserve1coreforhypervisorDesktopBaseComponentsXenDesktopVirtualDesktopAgentProvisioningServicesTargetDeviceAgentPluginforOnlineAppsPluginforOfflineApps(or

App-V)ToolsforHypervisor(Xen/ESX)CitrixUserProfileManagerFoundationalApplicationsApplicationsInstalledAppsPre-Cachedapps(notpre-deployed)WindowsXPandServer2003’ssetupprocessmisalignspartitionDesktopOptimization

PartitionOffset64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlockNTFSPartition63Sectors4kBSANStorageOperatingSystemDesktopOptimizationPartitionOffsetNTFSSANStorage4KBBlocks1readinVM=2IOonSANUseMicrosoft’sdiskparttooltoaligntheblocks/kb/300415

Whenthepartitionisaligned,everyI/OfromthepartitionresultsinasingleI/Ofromthestorage

DesktopOptimization

PartitionOffset64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlock64kBBlockNTFSPartition128Sectors4kBSANStorageOperatingSystemDesktopOptimizationPartitionOffsetNTFSSANStorage4KBBlocksAligned=GoodDesktopOptimizationPartitionoffsetmustbedivisibleby4096Recommendedoffset:Windows2000,2003,XP:32,768WindowsVista,7:1,048,576DetermineoffsetwithMSINFO32Incommandline:

wmicpartitiongetBlockSize,

StartingOffset,Name,IndexXPVMtypicallyoffsetby32,256MisalignedPartitionOffsetDesktopOptimizationwithProvisioningServicesXenConvertignoresexistingpartitionoffsetandisoptimizedforNTFSbydefaultDefaultoffsetinbytes=258048(63*4096)UtilizesXenConvert.initosetvDiskpartitionoffsetExample:SANinfrastructurewith1MBpartitionoffset

[parameters] PartitionOffsetBase=1048576XenConvert2.1orlaterDesktopOptimizationIncreaseservicetimeoutsDisablelastaccesstimestampTurnoffsystemrestoreDisableWindowsindexingserviceZerooutdeletedfilesRemoveunnecessaryvisualeffectsDisableWindowsXPTourPrompt(XP)DesktopOptimizationForceoffscreencompositionforIERemovetheMenuShowDelayDisabletheDesktopCleanupWizard(XP)DisableautomaticsearchingforNetworkPrinters/SharesTurnoffAutomaticUpdatesSetupPagefileMininumandMaximumtothesameDisablehibernationDisablekernelmemorydumpDesktopOptimizationsSetdefaultstartmenu

powerbuttonbehaviorRunXenConvertOptimizerCauses"complaints"from

Windows7ActionCenterConfigureActionCentertonot

showwarningsRemoveWindows7featuresMediaCenterDVDMakerTablePCComponentsWindowsXPOptimizationGuide(CTX124239)Windows7OptimizationGuideComingCitrixConfidential-DoNotDistributeDesktopOptimizationsVirtualizationLayerCitrixConfidential-DoNotDistributeScalabilityInfluencersStormWarningBootStormLogonStormLogoffStormDesignConsiderationsBootstormcausesmassivehitSetworkstationgrouppeakearlyenoughtosettledownOvercomesbootstormissuesIdledesktopsareaddedforeachnewlogonEventlogerrorsifnotenoughresourcesfornewidleworkstationsSetidlecountequaltoworkstationgroupsizeOvercomesissuesofnewstartingworkstationsSetidlelevelsloweraftermorningrushcompletes9-5WorkdayDesignConsiderationsThreeshiftsmeansthreepeaksCannotuseidlesettings,onlyonepeakperdaysupportedCouldcreatemultipleworkstationgroupswithdifferentpeaktimesShiftpreparationCreateidleVMstoprepfornextshiftImpactscurrentusersOptionsHaveextraHWavailableApprovealogondelayforusers(notlikelytobeacceptable)ShiftsRecommendedSpecifications8coresRAMequaltoworkstationsplushypervisorneeds-donotovercommitRAM6GbpsNICs-redundancy(2user/infrastructure,2storage,2management)NodedicatedmasterScalability–XenDesktoponXenServereth0+eth4UserandInfrastructuretrafficEmbedded(dualport)Addon(quadport)Design-XenDesktoponXenServereth2+eth5HostManagementandHAtrafficeth1+eth3StoragetrafficDesign-XenDesktoponXenServerPoolSizeRecommended:1,600VMs(16serversperpool*100VMsperserver)Actual:Higher(20-40serversperpool*80-100VMsperserver)DesktopGroupsMultipleresourcepoolscanbelinkedto1desktopgroupDOM0IncreaseDom0RAMallocationto2.94GB(/boot/extlinux.conf)IncreaseXen-heapsettingtoxenheap_megabytes=24(/boot/extlinux.conf)VirtualCenterrecommendedspecs:ESX3.5:1,700virtualdesktopsvSphere:2,500virtualdesktops4cores4GBRAM2GbpsNICs(redundancy)Hostserversrecommendedspecs8coresRAMequaltoworkstationplushypervisorneeds-donotovercommitRAM6GbpsNICs-redundancy(2user/infrastructure,2storage,2management)Scalability–XenDesktoponESXDesign–XenDesktoponESXvCenterlimitedto3,000VMsVMwarereferencearchitecture:1,000VMblocksUserhabitsdictateif2000isfeasiblevCenteriscriticaltoenvironmentCanbeasinglepointoffailure,requiresaclusteredsolutionXDmasterusesAPItodooperationalprocessesonVMsNumerouscallshavecausedAPItocrash,bringingdownentireVCDesktopGroupAXDdesktopgroupcanonlypointtosinglevCenterComplicatesdesignasmoredesktopgroupsrequiredDesign–XenDesktoponESXMemoryovercommit(Ballooning)DisableRiskofrunningoutofRAMCancauseexcessivediskpagingTransparentpagesharingIrrelevantNotshowntohelporhurtDesign–

XenDesktoponHyper-VWindows2008R2fullversionProvidesfullsupportfordriversandapplicationsEasiertomanageHyper-VFreeSKUforWindows2008R2SupportsonlyHyper-VandClusteringrolesProvidesslightlybetterperformance(LoginVSItests)Command-lineonlysupportDesign–

XenDesktoponHyper-VUnclusteredhostsupportedlimitationsMaximum384guestsperhostMaximum8vCPUstoasinglephysicalcore(CPUovercommit)Clusteredhostsupportedlimitations16hostspercluster1000guestspercluster(recentlychanged)DesktopgroupslimitedtosingleSCVMMserverDesign–

XenDesktoponHyper-VXenDesktopintegrationconsiderationsXenDesktopconsoleslowsdownwhenmorethan1000guestsaremanagedSCVMMissinglepointoffailureBreakoutVMMDatabasefromtheVMMServer,Library,&ConsoleFailover(livemigration)considerationsImplementfailoverclusteringonlywhenrequiredClusteringaddsoverheadandincreasesfailurepointsLivemigrationmustbestartedmanuallyStorageRecommendationsSavestatefileDiskspaceequaltoguest’sRAMStoredinVMdirectorywith.BINextensionCannotbedisabledWhereclusteringisrequiredEachclusterhasownvolume(LUN)EachvolumeissharedwithallserversinclusterSmallerclustersmaybethebestoptionHyper-VStorageRecommendations–AllHypervisorsMustbeabletosupportdiskI/OFastdrives–15,000RPMBattery-backedwritecacheAverageis80%write/20%readformostAshighas95%write/5%readinsomesituationsStorageCitrixConfidential-DoNotDistributeDiskTypeAsVHDexpandsDiskcanbecomefragmentedonphysicalmediaExpansionalgorithmoccursin1MBincrementsRapidexpansionwreakshavoconSANsuchasfirstbootorpagefilecreationAlignmentissuesConstructedwithextrabyteatendoffileDynamicVHDalwaysmis-alignsdiskwithstorageUseonlyfixed-sizeVHDsforwrite-cachedrivesandProvisioningservicesvDiskDynamicVHDStorageRecommendationsQuickandDirtyestimates5simultaneousbootupsperspindle12simultaneouslogonsperspindle14simultaneouslogoffsperspindle18simultaneoususersperspindleIOPScalculationsimpactedbyDiskspeedRAIDlevelRead/Write%(20/80)UserActivityActivityIOPSStartup26Logon12.5Working8Logoff10.7RAIDLevelWriteCost011or10254DiskSpeedRandom

IOPS15,00015010,0001105,40050CitrixConfidential-DoNotDistributeWriteCacheStorageLocationBootLogonWorkingLogoffRAID05121814RAID13697RAID51344VirtualDesktopsperSpindleBootLogonWorkingLogoffRAID012524RAID1201049RAID56020715Spindlesrequiredfor60desktoploadWorking3715CitrixConfidential-DoNotDistributeIOPSCalculationsStorageRecommendationsVirtualdesktopsareWRITEintensive(notREAD)20%Read80%WriteNeedRAIDthatsupportsheavywritesRAID1for2disksRAID10(1+0)for4+disksRAID5ismeantforreadintensiveoperationsDatabasesProvisioningservicesvDiskstorageStorageRecommendationsThroughput:HBAmustsupportdiskthroughputEstimate125KB/sperdesktopQuickandDirtyHBAEstimates1GbpsHBA≈800activedesktops1bladeenclosure=16blades1blade≈50-80VMs1-2HBAstosupportload(notincludingredundancy)OSDeliveryLayerCitrixConfidential-DoNotDistributeWindows7bootstologonscreen(200MB)Userlogsonandsetsuptheirdesktopenvironment(50MB)UserrunsOfficeandotherapplications(1GB)

StreamedapplicationslittleimpactInstalledapplicationshugeimpactUserlogsoffand/orshutsdownWindows7(150MB)CitrixConfidential-DoNotDistributeProvisioningServicesSystemCacheGoal:UsesystemcacheandnotreadfromdiskRAM=

OS+OS_Cache_Req+(#_Active_vDisks*Avg_Data_Read_per_vDisk)2vDisks:2GB+512MB+(2*2GB)=6.5GB4vDisks:2GB+512MB+(4*2GB)=10.5GBCitrixConfidential-DoNotDistributeOptimizingProvisioningServiceswithSystemCacheRecommendedSpecs:1200-1500streams8cores2GB+2GBRAMpervDisk(estimate)3GbpsNICsteamedEvery1GbpsNIC≈500streamsMorestreams=longer

failoverprocess1,000streams≈5minutes1,500streams≈8minutesScalability–ProvisioningServicesOperatingSystemDelivery–DataTransferredvDiskOSAverageTransferredData(MB)DeviceCacheServerCacheXPSP2x328590XPSP2x641101152003ServerSP1x32*951002003ServerSP1x64*120130Windows7orVistaEnterprisex32180190Windows7orVistaEnterprisex64220240DHCPOption66:TFTPServerOption67:BootstrapfilePXEbootservicesBootDeviceManagerBypassesTFTP/PXEservicesAllowsforeasierintegrationMustmaintainBDM.ISOfileCitrixConfidential-DoNotDistributeBootOptionsvDiskImagesGoalisasinglevDiskRealistically3-4vDisksperimageGoldProductionPre-productionDevelopment

Dev/TestPVSServerProductionPVSServerLibraryNASA0A0UseStagingApproach…A0A1UpdatevDiskinPrivateImagemodeCopythevDisktoDev/TestEnvironmentA1CopytoLibraryandtoProductionA1AutomaticallyUpdateTargetDevicesUponNextRebootA1A0OperationsApplicationDeliverySAN,NASXenServerXenAppPVSVirtualMachineAppcabfilesDecompressedRadeCacheWriteCacheStoragevDiskSwap/tempfilesAppStreamProfileSMB/CIFSFileshareApplicationDeliverySAN,NASXenServerXenAppPVSVirtualMachineWriteCacheStoragevDiskSwap/tempfilesAppStreamProfileSMB/CIFSFileshareDecompressedRadeCachePlanningStartwithwritecacheonPVSServerStartwithinitialsizeof2GB+swapfileDesigningIf“targetdevicewritecache”ischosen,availablespacemustbesufficientorOSmaybluescreenMinimizenetworkimpact(limitnumberofhops)ImplementingDoNOTusePVSserverDoNOTuseRAMUselocaldisk(shared/local)WriteCacheSizingConsiderationsOptimizationsFixedvDisks:FragmentationriskofdynamicvDiskduringupdateswhensizeisincreasedDisableTCPLargeSendOffloadAddslatencyaspacketsre-segmentedMustbesetonserverandtargetNoauto-negotiationCauseslatencyinhandshakeCancausePXEtimeoutHard-setserver/targetNICandswitchportsappropriatelyOptimizationsFileCachingIfPVSserverseesdriveaslocaldrive,OSwillcacheIfPVSserverseesdriveasnetworkdrive,OSwillnotcacheIfconnectionbetweenPVSandstorageisCIFS,OSwillnotcacheDifferentialdisksDonotuseObservabledecreaseinresponsivenessinvirtualdesktopsDesktopDeliveryLayerCitrixConfidential-DoNotDistributeCitrixConfidential-DoNotDistributeXenDesktopConnectionReferenceScalability–XenDesktop5.XInfluencersXMLresponsetimesSessionlogontimesHypervisorcluster/poolsizeDDCrecommendedspecs:5,000desktops2cores(1.8GHz+)8GBRAM2GbpsNICs(Redundancy)DesignChallengesCitrixConfidential-DoNotDistributeXenServerXenDesktopDesignChallengesAggregatingmultiplepools(ifmorethan16XShostsneeded)XenDesktopSetupWizardcanonlycommunicatetoasinglepoolVMtemplatesneedtobecopiedtoeachpoolAddbackuppoolmasterforhighavailabilityXenServerStorage-IOPS,WriteCachedisks,HBAs,StorageLink,

localRAIDXenServerNetworking-VLANs,NICbonding,segregatednetworks(NFS/iSCSI)Host/VMSizing–nomemoryovercommitsosizeVMsproperlyDelegatedadministration-Whoshouldhaveaccess?ESXXenDesktopDesignChallengesPoolManagementstart10%ofthetotalpoolsizeCanoverwhelmvCenterEditPoolManagementServiceconfigurationfile:C:\ProgramFiles\Citrix\VMManagement\CdsPoolMgr.exe.configModifythe<appSetting>section<addkey=”MaximumTransitionRate”value=”20”/>Value:VMwareDRSused:20VMwareDRSnotused:40XenDesktopDesignChallengesSCVMMtemplatesAddedalocalwritecachedisktemplateDiskdroppedduringcreatewizardPowerShellscriptsneededtocopy/addwritecacheVHDtoallvirtualmachinesaftercreatedProcessconsumesabout3hrsfor1,000virtualmachinesSCVMMserverisabletorunjobsasynchronouslyRunningmultipleinstancesoftheXDSetupWizardspeedsupVMcreationSetupWizarddividesthenumberofvirtualmachinesequallyacrossallthehostsontheSCVMMserverHyper-VXenDesktopDesignChallengesRebootingcausinghugespikeindiskactivityRebootingalldesktopsfromSCVMMdoesallVMsatonceXenDesktopconsolestaggersreboots,minimizesimpacttostorageHyper-VReferenceArchitectureCitrixConfidential-DoNotDistributeSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerXDControllerXDController(XML1)XDController(XML2)VDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServices1,750HostedVM-BasedVDIDesktopsSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerXDControllerXDController(XML1)XDController(XML2)VDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktops3,500HostedVM-BasedVDIDesktopsPVSServerSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerDDCDDCVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktops5,000HostedVM-BasedVDIDesktopsPVSServerPVSServerSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerXDControllerXDController(XML1)XDController(XML2)VDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktops6,750HostedVM-BasedVDIDesktopsDDCDDCPVSServerPVSServerPVSServerSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerXDControllerXDController(XML1)XDController(XML2)VDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktops8,500HostedVM-BasedVDIDesktopsXDControllerXDController(XML1)XDController(XML2)PVSServerPVSServerPVSServerPVSServerSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerDDCDDCVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServer2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopServerXNumberofDesktops10,000HostedVM-BasedVDIDesktopsDDCDDCPVSServerPVSServerPVSServerPVSServerPVSServerProvisioningServicesHighAvailabilityClusterPVSServerPVSServerDDCDDCVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsWebInterface3WebInterface4VDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopSXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopS2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsDDCDDCPVSServerPVSServerPVSServerPVSServerPVSServer20,000HostedVM-BasedVDIDesktopsSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerDDCDDCVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopSXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopS2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsDDCDDCPVSServerPVSServerPVSServerPVSServerPVSServerProvisioningServicesHighAvailabilityClusterPVSServerPVSServerXDControllerXDController(XML1)XDController(XML2)VDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsWebInterface3WebInterface4VDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopSXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopS2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsXDControllerXDController(XML1)XDController(XML2)PVSServerPVSServerPVSServerPVSServerPVSServer40,000HostedVM-BasedVDIDesktopsSharedStorageProvisioningServicesHighAvailabilityClusterPVSServerSharedStoragePVSServerXDControllerXDController(XML1)XDController(XML2)VDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsWebInterface1DataStoreServerWebInterface2LicenseServerControlServicesVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktop2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktopSXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopXNumberofDesktopsVDIDesktopServerVDIDesktopServerVDIDesktopS2000DesktopsVDIDesktopServerVDIDesktopServerVDIDesktop