SQL Server automatic backup failed to delete expired backup files

server| Backup

The database server makes a database backup two o'clock in the morning every day, while the database backup files are deleted 5 days ago, otherwise the hard drive will be exploded

Information in the Windows log:
DB backup job for SQL Server scheduled job ' DB Maintenance Plan 1 '.  ' (0x2da54a5bbefc2b4a874428b91602c52a)-Status: Failed-invoked on:2005-09-09 01:00:00-message: Job failed. The job was invoked by the Dispatch 28 (1th Dispatch). The last step to run is Step 1th (step 1th).

Log given in SQL Server:
SQLMaint.exe failed [SQLSTATE 42000]

Related to Microsoft given the KB
http://support.microsoft.com/?kbid=288577
http://support.microsoft.com/kb/303292/EN-US/
It seems to be confused.

Later found that it is the original to back up the database, one of which is offline, the results can not be backed up, it can not be expired deleted, no way, had to put it back to my machine.