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VMware, Inc. 39
Chapter 3 VirtualCenter and ESX Server 3 Licensing Overview
TheVirtualCenter Serverusesa“heartbeat”mechanismtocheckwhetherthelicense
serverisreachableandtodetermineiftherehavebeenanychangesinthelicensefile.
Theheartbeatintervalisfiveminutes.ItmighttaketheVirtualCenter Serveruptofive
minutestodetectiftherearelicensechangesorif
thelicenseserverhasbecome
unavailable.
Whenthelicenseserverbecomesunavailable,orifachangeinthelicensefilecausesa
checkedoutlicensetoberemoved,theVirtualCenter Servermarkstheaffectedlicenses
as“UnlicensedUse,”andthelicensedfeaturescontinuetooperateasdescribedabove.
Whenthelicense
serverbecomesavailableagain,orwhenlicensesarereaddedtothe
licensefile,theVirtualCenter Serverchecksoutthelicensesagainandrevertsthemto
theLicensedstate.Ifalicensecannotbecheckedout,thelicenseremainsinthe
UnlicensedUsestate.
Iflicenseserveravailabilityisaconcernin
yourenvironment,consideroneofthe
followingstrategies:
InstallthelicenseserveronthesamemachineastheVirtualCenter Server.Thisis
thedefaultoptionprovidedbytheVirtualCenterinstaller.
Installthelicenseserverinavirtualmachine,andplacethatvirtualmachineinan
HAcluster.VMware HArestartsthelicenseservermachineonanotherESX Server
hostincaseoffailure.
UsesinglehostlicensefilesonESX Serverhosts.
Using an Existing FLEXnet License Server
Inmostcases,VMwarerecommendsinstallingthelicenseserveronthesamemachine
astheVirtualCenter Server.However,ifyouhaveaFLEXnetlicenseserverinyour
environmentprovidinglicensesforotherproducts,installtheVMwarelicenseserver
onthatsystem.
ToinstalltheVMwarelicenseserveronyourexistingFLEXnetserver,
usethe
standalonelicenseserverinstallerasdescribedin“InstallingaLicenseServeron
page 60.ThisinstallstheVMwarelicenseservervendordaemon,whichcancoexist
withothervendordaemonsinstalledontheserver.
N
OTETheVMwarelicenseserverissupportedonlyonWindowsoperatingsystems.
YoucannotinstalltheVMwarelicenseserveronaLinuxbasedFLEXnetserver.
See “LicenseServerSoftwareRequirementsonpage 21.
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