6.3

Table Of Contents
VMware, Inc. 83
Glossary
H HardwareAgnostic
AkeyvCenterServerHeartbeatfeatureenablingtheuseofserversfromdifferentmanufacturers,models,
andprocessingpowerinasinglevCenterServerHeartbeatserverpair.
Heartbeat
ThepacketofinformationissuedbythepassiveserveracrosstheVMwareChannel,whichtheactive
serverrespondsto,indicatingitspresence.
HeartbeatDiagnostics
TheumbrellanamefortheVMwareprocessandtoolsusedtochecktheproductionserverhealthand
applicabilitytotheimplementationofthevCenterServerHeartbeatsolution.
HighAvailability(HA)
Keepingusersseamlesslyconnectedtotheirapplications,regardlessofthenatureofafailure.LAN
environmentsareideallysuitedforHA.
Hotfix
A
single,cumulativepackagethatincludesoneormorefilesusedtoaddressaprobleminaproduct.
I IdenticalNodes
Theuseoftwoserversidenticalinname,IPaddress,andsecurityidentifier(SID).
Identity
Thereferenceofaserverspositionintheserverpairbaseduponhardware,eitherthePrimaryserveror
theSecondaryserver.
L LowBandwidthModule(LBM)
AvCenterServerHeartbeatModulethatcompressesandoptimizesdatareplicatedbetweenaPrimary
andSecondaryserver,therebydeliveringmaximumdatathroughputandimprovingapplication
responsetimeoncongestedWANlinks.
M MachineName
TheWindowsorNETBIOSnameofacomputer.
ManagementIPAddress
AnadditionallyassignedunfilteredIPaddressusedforservermanagementpurposesonly.
ManytoOne
OnephysicalSecondaryserver(hostingmorethanonevirtualserver)canprovideprotectiontomultiple
physicalPrimaryservers.
N NetworkMonitoring
Monitoringtheactiveserverscapabilitytocommunicatewiththerestofthenetworkbypollingdefined
nodesaroundthenetworkatregularintervals.
NonIdenticalNodes
Twoserversinaclusterusingdifferingnames,PassiveIPaddresses,andsecurityidentifiers(SIDs).
P Passive
Thefunctionalstateorroleofaserverthatisnotdeliveringservicetoclientsandishiddenfromtherest
ofthenetwork.
PassiveServerQueue
Thestagingareaonthepassiveserverusedtostorechangesreceivedfromtheactiveserverbeforethey
areappliedtothepassiveservers
diskorregistry.