No. Backup to a file. Ignore devices.
BACKUP DATABASE DBName
TO DISK = <file name here>
The file name can be a variable, so you can build up the string with the date.
If you create backups to disk, it'll create exactly the type of backup you specify. Want a differential, specify WITH DIFFERENTIAL
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability