I'm trying to get SQL Server 2008 R2 to perform a full backup of each database on a nightly basis and overwrite the existing backup files in the folder from the previous night.
I have a maintenance plan running and the backup runs each night successfully, but the files are not being overwritten. My maintenance plan is creating a backup file for every database as it should.
Inside of the maintenance plan dialog, I have the box checked "backup set will expire" and then I selected the radio button "after" with a value of 1 day.
What am I missing so that SQL Server 2008 R2 will overwrite the files?