Introduction.....3Step1.LabManagerDeploy...4Step2.RunningthePre-UpgradeChecker....6Step3.MigrationtovCenterServer4.1......13Step4.UpgradinghoststoESX(i)4.1........33Step5.UsingvihostupdatetoupgradeESXi4.0U1toESXi4.1..34Step6.UsingUpdateManager