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Table Of Contents
VMware, Inc. 291
Chapter 13 Configuring Clustering on Windows Hosts
Youcanprovideyourownlockfilenamebysettingscsi1:0.reslcknameinthe
configurationfile.Forexample,ifyousetscsi1:0.reslcknameto
/tmp/scsi1-0.reslockintheconfigurationfile,thisnameoverridesthedefaultlock
filename.
AfterSCSIreservationisenabledforadisk,youmustconfigureeachvirtualmachine
tousethisdisk.
See“ConfiguringHardDisks”onpage 141.
Event Logging When Virtual Disks Are Shared
SomediskerrorsarerecordedintheWindowseventloginthenormaloperationofa
Windowsvirtualmachine.Anexampleerrormessageis:
The driver detected a controller error on \Device\Scsi\BusLogic3
Theerrorsmightappearinthelogperiodicallyonthepassivenodeofthecluster,and
whenthepassivenodeistakingoverduringafailover.Theerrorsareloggedbecause
theactivenodeoftheclusterhasreservedthesharedvirtualdisk.Thepassivenode
periodicallyprobestheshareddisk
andreceivesaSCSIreservationconflicterror.
Creating a Cluster in a Box
WithVMwareServer,youcancreateasimpleclusterinaboxtoprovidehigh
availability.
Theclusterinaboxconfigurationhasthefollowingfeatures:
Consistsofmultiplevirtualmachines(nodes)onasinglephysicalmachine.
SupportsshareddiskswithoutsharedSCSIhardware.
Supportsaheartbeatnetworkwithoutanextraphysicalnetworkadapter.
CAUTIONYoumustusethesamelockfilename(forexample,
/tmp/scsi1-0.reslock)foreachvirtualmachineinthecluster.Youmustalsousethe
sameSCSItargetforeachvirtualmachinewhenyoudefinescsi1:0.reslckname.
However,theSCSIbus(scsi1inthiscase)doesnotneedtobethesame.
NOTETheabilitytotakesnapshotsisdisabledinaclusteringconfiguration.