6.3

Table Of Contents
VMware, Inc. 81
A Active
Thefunctionalstateorroleofaservervisiblethroughthenetworkbyclientsrunningprotected
applicationsandservicingclientrequests.
Alert
Anotificationsenttoauserorenteredintothesystemlogindicatinganexceededthreshold.
ActiveDirectory(AD)
Presentsapplicationswithasingle,simplifiedsetofinterfacessousers
canlocateandusedirectory
resourcesfromavarietyofnetworkswhilebypassingdifferencesamongproprietaryservices.vCenter
ServerHeartbeatswitchoversandfailoversrequirenochangestoAD,resultinginswitchoverandfailover
timesmeasuredinseconds.
ActivePassive
Thecouplingoftwoservers:oneservervisibletoclientsona
networkandprovidingapplicationservice,
theotherservernotvisibleandnotprovidingapplicationservice.
ActiveServerQueue
Thestagingareaoftheactiveserverusedtostoreintercepteddatachangesbeforebeingtransported
acrosstheVMwareChanneltothepassiveserver.
AdvancedConfigurationandPowerInterface(ACPI)
Aspecificationthatdictates
howtheoperatingsystemcaninteractwithhardwareusingpowersaving
schemes.PrimaryandSecondaryserversmusthavethesameACPIcompliance.
Asynchronous
Aprocesswherebyreplicateddataisapplied(written)tothepassiveserverindependentlyoftheactive
server.
B BasicInput/OutputSystem(BIOS)
Theprogramapersonalcomputerʹsmicroprocessorusestostartthecomputersystemafteryouturniton.
Italsomanagesdataflowbetweenthecomputerʹsoperatingsystemandattacheddevicessuchasthehard
disk,videoadapter,keyboard,mouse,andprinter.
C CachedCredentials
LocallystoredsecurityaccesscredentialsusedtologintoacomputersystemwhenaDomainController
isnotavailable.
ChannelDrop
AneventinwhichthededicatedcommunicationslinkbetweenthePrimaryandSecondaryserverfails,
oftenresultinginthepassiveserverbecomingactiveandconsequentlycreatingasplit
brainsyndrome.
Glossary