Backup not replacing old files

[TaskSoftware]

I have a scheduled backup set on my panel, to backup all server configuration and content, and is set to run every week. I also set to keep only 1 backup on repository, but this config doesn't seem to work! My hard drive is getting full all the time, and when I check that its because theres a lot of old backups stored that are not getting removed!

My question is: the backup script removes the old files only at the end or it does it while backing up?
If the action of removal happens only at the end of the script, i think it would explain why it isn't working: my hard drive gets full before, and the script drops an error, and never get to the end of it and it doesn't remove the old backups.


My Version: Parallels Plesk Panel v11.0.9_build20120609.17 os_Windows 2008

 

[TaskSoftware]

Anybody having the same issue?
Parallels, should I open a ticket to investigate this problem?

 

[InderS]

plesk backup will create separate files with every backup. You are using any other backup process ?