>>Do I follow the "virtual volumes" setup process?

No, use the "enterprise configuration" form.  You won't be creating any virtual 
volumes.
When you export client data, it will land in the appropriate domain/mgmt. 
class, and get put into the storage hierarchy of the target server.
Woe be unto you if you have domains/mgmt. classes with the same names, but 
different retention rules, when you start the export/import. 


>>Then, define the node manually on the target;
Not necessary, it will get created with the import.


Then: 
>>1: Lock the node.
Not really necessary.

>>2: EXPORT NODE <nodename> TOSERVER=<target> FILEDATA=BACKUP 
>>EXPORTIDENTIFIER=<a value>  
Suggest adding MERGE =YES as standard practice.
 
Wanda