3.0.1

View Manager Administration Guide
98 VMware, Inc.
Desktop Refresh
Adesktoprefreshissimilartoadesktoprecompositionbutwithoutanychangetothe
baseimage.Thisactioniscarriedoutinordertorestorethesystemdataforadesktop
pooltoabaselinestateandtherebyreducethesizeoftheoperatingsystemdataofeach
attachedclone.
Ade
sktoprefreshcanbecarriedouteitherondemand,asatimedevent,orwhenthe
operatingsystemdatareachesaspecifiedsize.Figure 6‐3illustratestheeffectofthis
action—notethattheuserdatadiskremainsunaffectedbythisevent.
Figure 6-3. Desktops Refresh
Itisimportanttooccasionallyrefreshtheattachedsy
stemsinordertopreventthe
desktopclonesgrowingtothesizeofafullvirtualmachine.Ifalltheanchoredvirtual
machinesarelefttogrowuncheckedthenallfreespaceremainingonthedatastore
couldberapidlyconsumed—particularlyifthestorageovercommitlevelisparticularly
aggressive.
Desktop Rebalance
Alogicaldriveisastructurecreatedonasubsystemfordatastoragethatisdefinedover
asetofdrivescalledanarray.Logicaldrives—oftenreferredtoasLUNs,whichstands
forLogicalUnitNumberandrepresentstheidentifierahostusestoaccessthelogical
drive—arethelogicalsegmentationofarrays.
base image + snapshot
replica 1
parent VM
refresh
user data disk
bloated
OS data disk
refreshed
OS data disk
user data disk