单项选择题Anadministratorhasatwo-nodePowerHAclusterinamutualtakeoverconfiguration.Heneedstoupdatefrom5.5servicepack1to5.5servicepack2.Whichofthefollowingactionswillperformtheupdateswithnoriskofdisruptiontoapplicationsrunninginthecluster?()
A.Unmanage resource groups on all nodes, update the cluster filesets, start cluster services on all nodes,ensure cluster services stabilize
B.Update the cluster filesets on all nodes. Run ’refresh -s clstrmgrES’ on one node, wait for the cluster tostabilize, repeat for all other nodes
C.Unmanage resource groups on one node, update the cluster filesets, start cluster services. Wait for thecluster to stabilize and repeat for all other nodes.
D.Bring resource groups (RGs) online on all nodes concurrently, bring RGs offline on one node, update thecluster filesets, bring RGs online, repeat for all other nodes