Copy (backup) disk files to DVD or BD (Blue-ray), with full or incremental backup and media verification. Specify directories and files to include or exclude at any level. Save specifications in a job file for repeated use. Full or incremental backup and media verification. Incremental backup updates same DVD/BD as prior full backup. Large job may span multiple DVD/BDs. Includes owner and permissions data. Report disk:DVD/BD differences by file, directory, or total (new/modified/deleted files and bytes). Incremental backup and verify in < 1 minute if new + modified files < 30 MB. Big jobs run typically 150-300 MB/minute.