Company.com is migrating from a third party managed disk subsystem to an IBM TotalStorage Enterprise Storage Server. Connection of the new storage server is complete， and it has been tested on all of the nodes in the three node HACMP cluster.  How does the customer migrate to the new storage server with minimum down time？（）

• A、 Shut down one node at a time and let the other node serve the application
• B、 Stop HACMP with the forced option and perform migration of the disks on one node，then restart HACMP
• C、 Stop both nodes and perform the migration all at once using standard AIX commands in parallel， then restart the cluster
• D、 Use C-SPOC to add the new disks to the cluster and migrate the information off the existing disks， then remove the old disks with C-SPOC