Backup query advice needed

Hello there can someone clarify a query I have it regards making back up copies of all formats of discs music pxs dreamcast etc I have a Plex 16x10x40xa and a Pioneer 116 dvd/reader me and my mate have an argument in that I say this configuration will not copy al types of protected formats he says otherwise … which one is right I know that the plex writes Raw but it cannot read sub channel data is this right but does the Pioneer read sub channel any help would be appreciated