I have a client that is utilizing Backup & Recovery 11 (build 11.0.17440) on a Windows 2008 R2 server. They have removable media attached via USB for the backup storage. The backups can store one day of backups and they rotate 5 days of media. The retention policy is set to:
Clean up archive: Using retention rules
Retention Rules: Backups older than 1 Day, Delete the oldest backup
Apply retention rules: Before backup
When the drive is rotated and the backupp is 5 days old, the retention policy should delete the older backups and then run the backup job. This is not happening.