I have a 600GB external USB hard drive as a backup device.
For some reason, the backup fails with the message "The backup-to-disk device is out of free space". I created a job to overwrite the media, but apparently it is not working anymore ... it used to work. If I manually format the external USB, it will backup ok for one day and very next day it won't backup. Why does it overwrite the media before it starts to backup?