Checking my Native backup this morning something wierd happened. I will describe the problem here.
1) The msdb table backup set shows me the backup was done successfully.
2) The errorlog shows me that the backup was done successfully.
3) The job history doesn't show any entry, even it is successfully or error.
4) Checking the backup media family table the physical device name column shows me something like this: {F2F1E11C-589A-4AAE-8880-0120D8D1998D}1 and other days it shows me the right directory of my backups.
4) The DPM also do system state and database backup after the SQL Server Backup and runs well.
Well.. if anyone need more informations, please let me know.
Thanks. Marcos Freccia @SqlFreccia