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Table Of Contents
VMware, Inc. 143
Chapter 8 Configuring Virtual Machine Hardware
Ifyouhaveasnapshot,youmustremoveitbeforeyoucanchangethediskmodewhen
youeditavirtualdisk.See“RemovingaSnapshot”onpage 199.
IfyouselectIndependentMode,alsoselectoneofthefollowing:
PersistentDisksinpersistentmodebehavelikeconventionaldisksonyour
physicalcomputer.Alldatawrittentoadiskinpersistentmodearewritten
permanentlytothedisk.
NonpersistentChangestodisksinnonpersistentmodearediscardedwhenyou
powerofforresetthevirtualmachine.Nonpersistentmodeenablesyoutorestart
thevirtualmachinewithavirtualdiskinthesamestateeverytime.Changestothe
diskareactuallywrittentoandreadfromaredo
logfilethatisdeletedwhenyou
powerofforreset.
Device Type and Node Settings
Whencreatinganewvirtualdisk,thedefaultadaptertypeisbasedonyourselected
guestoperatingsystem.
VirtualdiskscanbeconfiguredasIDEdisksforanyguestoperatingsystem.Theycan
besetupasSCSIdisksforanyguestoperatingsystemthathasadriverfortheLSI
Logic
(parallel),BusLogic(parallel),orLSILogicSASadapter.ThecorrectSCSIadapteris
automaticallychosenbasedonyourguestoperatingsystem.Ifyouneedtochangethe
adaptertype,followtheprocedurein“ConfiguringSCSIControllers”onpage 159.
Eithertypeofvirtualdiskcanbestoredoneithertypeof
physicalharddisk.For
example,thefilesthatmakeupanIDEvirtualdiskcanbestoredoneitheranIDEhard
diskoraSCSIharddisk.Virtualdiskscanalsobestoredonothertypesoffastaccess
storagemedia.
Anavailabledevicenodeisselectedbydefault.
Disk Write Caching Policy Setting
Thefollowingoptionsdeterminewhenchangesarewrittentodisk:
OptimizeforsafetySavesallchangestothevirtualdiskimmediately.
OptimizeforperformanceAcknowledgeschangestothevirtualdisk
immediately,butsavesthematalatertime.
N
OTEForWindowsXPguestsystems,theLSILogicadapterrequiresanaddondriver
fromtheLSILogicWebsite.ForWindowsXPandWindowsServer2003guestsystems,
theBusLogicadapterrequiresanaddondriverfromtheVMwareWebsite.Seethe
VMwareGuestOperatingSystemInstallationGuide.