单项选择题AcustomerwantstomigratetheirexistingclusterontonewPOWER6hardware,andinadditionrequirestheclustertobemigratedfromPowerHAversion5.3to5.5.GiventhatAIX6.1andPowerHA5.5filesetsarealreadyinstalledinthenewhardware,whichofthefollowingmethodswouldallowthecustomertomaintaintheircurrentclusterconfiguration?()
A.Add the new nodes to the existing cluster, and perform a rolling migration and remove the original nodesfrom the cluster
B.Add the new nodes to the existing cluster, and perform a non-disruptive upgrade and remove the originalnodes from the cluster.
C.Create a snapshot of the existing cluster and apply the snapshot to the new cluster. Start cluster serviceson the new cluster and stop the original cluster
D.Create a snapshot of the existing cluster and apply the snapshot to the new cluster. Stop cluster serviceson the original cluster and start on the new cluster