3.0

Table Of Contents
VMware, Inc. 247
Glossary
virtualmachinedisk(.vmdk)
Afileorsetoffilesthatappearsasaphysicaldiskdrivetoaguestoperating
system.Thesefilescanbeonthehostmachineoronaremotefilesystem.
virtualmachinetemplate
Amasterimageofavirtualmachinethattypicallyincludesaspecifiedoperating
systemandvirtualcounterpartstohardwarecomponents.Avirtualmachine
templatecanincludeaninstalledguestoperatingsystemandasetofapplications.
virtualrouter
Avirtualmachinethatspecificallyroutespacketsbetweenothervirtualmachines.
Lab Managerconfiguresthevirtualrouterwhenyoudeployafenced
configurationanddeletesitwhen
youundeploytheconfiguration.
Lab ManagerdoesnotcreateavirtualrouterfortheBlockInandOutfencing
mode.
virtualswitch
AvirtualizednetworkswitchusedbyESXtomanagetrafficbetweenvirtual
machines,theserviceconsole,andthephysicalnetworkadaptersontheESXhost.
VMFS(VirtualMachineFileSystem)
Afile
systemthatisoptimizedforstoringvirtualmachines.OneVMFSpartitionis
supportedperSCSIstoragedeviceorLUN.DifferentversionsofESXmightuse
differentversionsofVMFS.Forexample,VMFS3wasintroducedwithESXServer
3.
VMkernel
InESX,ahighperformancehypervisorthatoccupiesthevirtualizationlayerand
manages
mostofthephysicalresourcesonthehardware,includingmemory,
physicalprocessors,storage,andnetworkingcontrollers.
VMotion
AfeaturethatenablesyoutomoverunningvirtualmachinesfromoneESXsystem
toanotherwithoutinterruptingservice.Itrequireslicensingonboththesource
andtargethosts.VMotionisactivatedbythe
VirtualCenteragent,and
VirtualCenterServercentrallycoordinatesallVMotionactivities.Seealsovirtual
machinedisk(.vmdk).