RESTORE DATABASE [db1] FROM DISK = N'C:\folder\db1.bak' WITH FILE = 1, MOVE N'DB_Data' TO N'C:\folder\db2.mdf', MOVE N'DB_log' TO N'C:\folder\db1.LDF', NOUNLOAD, STATS = 10
GO
RESTORE DATABASE [db2] FROM DISK = N'C:\folder\db2.bak' WITH FILE = 1, MOVE N'DB_Data' TO N'C:\folder\db2.mdf', MOVE N'DB_Log' TO N'C:\folder\db2.LDF', NOUNLOAD, STATS = 10
GO
Tente algo assim.
