Specifications

VMware, Inc. 133
Chapter 6 View Composer
Figure 6-3. Desktops Refresh
Itisimportanttooccasionallyrefreshtheattachedsystems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(LogicalUnit
Number)andrepresenttheidentifierahostusestoaccessthelogicaldrive—arethe
logicalsegmentationofarrays.
If
administratorsarecreatinglargepoolsofdesktopsandareusingmultipleLUNs,
thereisapossibilitythatthespaceisnotbeingusedefficientlyiftheinitialsizingwas
inaccurate.Figure 6‐4showsanumberofvirtualdesktops,distributedunevenlyover
twoLUNs.
base image + snapshot
replica 1
parent VM
refresh
user data disk
bloated
OS data disk
refreshed
OS data disk
user data disk