If the LUNs in question follow the configuration rules for the SnapManager product for a valid snapshot backup (for example, separating the databases and transaction logs onto separate LUNs for a SME backup) then you can simply step through the SnapManager configuration wizard and accept the defaults.
The configuration wizard must still be run, but you would not actually be moving the databases or log files. The caveat is that the configuration rules for a valid SnapManager backup MUST be followed. If they are not, then you will have to move the database or log files in order to bring the file layout into a valid configuration.
