1-16 OverviewFollow these steps to use drive roaming:Step 1. Turn off the power to the server and all physical disks,enclosures, and system components. Disconnect the powercords from the system.Step 2. Open the host system by following the instructions in the hostsystem technical documentation.Step 3. Move the drives to different positions on the backplane tochange the targets.Step 4. Determine the SAS target requirements.Step 5. Perform a safety check.a. Make sure that the drives are inserted correctly.b. Close the cabinet of the host system.Step 6. Reconnect the power cords to the system.Step 7. Turn on the power to the system.The controller then detects the RAID configuration from theconfiguration data on the drives.1.6.8 Drive MigrationDrive migration is the transfer of a set of drives in an existingconfiguration from one controller to another. The drives must remain onthe same channel and must be reinstalled in the same order as in theoriginal configuration. The controller to which you migrate the drivescannot have an existing configuration.Note: Only whole virtual disks can be migrated automatically;partial virtual disks can be migrated manually.Note: Drive roaming and drive migration cannot be supported atthe same time.Follow these steps to migrate drives:Step 1. Make sure that you clear the configuration on the system towhich you migrate the drives, to prevent a configuration datamismatch between the drives and the NVRAM.