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VMware, Inc. 25
Chapter 1 VMware Infrastructure Components
VMwareDRSAfeaturethathelpsimproveresourceallocationandpower
consumptionacrossallhostsandresourcepools.VMwareDRScollectsresource
usageinformationforallhostsandvirtualmachinesintheclusterandgives
recommendations(ormigratesvirtualmachines)inoneoftwosituations:
InitialplacementWhenyoufirstpoweronavirtualmachineinthecluster,
DRSeitherplacesthevirtualmachineormakesarecommendation.
LoadbalancingDRStriestoimproveresourceutilizationacrossthecluster
byperformingautomaticmigrationsofvirtualmachines(VMotion)orby
providingarecommendationforvirtualmachinemigrations.
VMwareDRSincludesexperimentaldistributedpowermanagement(DPM)
capabilities.WhenDPMisenabled,thesystemcomparescluster‐andhostlevel
capacityto
thedemandsofvirtualmachinesrunninginthecluster.Basedonthe
resultsofthecomparison,DPMrecommends(orautomaticallyimplements)
actionsthatcanreducethepowerconsumptionofthecluster.
VMwareInfrastructureSDKpackageAPIsformanagingvirtualinfrastructure
anddocumentationdescribingthoseAPIs.TheSDKalsoincludesthe
VirtualCenterWebServiceinterface,WebServicesDescriptionLanguage(WSDL),
andexamplefiles.Thisisavailablethroughanexternallink.TodownloadtheSDK
package,seehttp://www.vmware.com/support/developer.
VirtualCenter Modules
VirtualCentermodulesextendthecapabilitiesofVirtualCenterbyprovidingadditional
featuresandfunctionality.Somemodulesarepackagedseparatelyfromthebase
productandrequireseparateinstallation.Modulesandthebaseproductcanbe
upgradedindependentlyofeachother.VMwaremodulesinclude:
VMwareUpdateManagerEnablesadministratorstoapplyupdatesandpatches
acrossESXServerhostsandallmanagedvirtualmachines.Thismoduleprovides
theabilitytocreateuserdefinedsecuritybaselineswhichrepresentasetofsecurity
standards.Securityadministratorscancomparehostsandvirtualmachines
againstthesebaselinestoidentify
andremediatesystemsthatarenotin
compliance.
VMwareConverterEnterpriseforVirtualCenterEnablesuserstoconvert
physicalmachines,andvirtualmachinesinavarietyofformats,toESXServer
virtualmachines.ConvertedsystemscanbeimportedintotheVirtualCenter
inventory.
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