database clone using RMAN questions---How to direct recover backup files and archivelog files from p

Hi,

 I use RMAN duplicate command script to do database clone from production database to test database which are on the seperate servers. Every time before I do duplicate DB, I need to copy all backup files of production DB and archivelog files from production server to test server and place them to the same directory as production server on the test server. I need to create those directories on test server first. How I can omite this step to directly duplicate production DB from production server to test server without copy all archivelogs files and backup files from production server