Parallels Plesk Panel version 9.0 structure of server backup repository has been changed in file system. Location of root backup directory is stored in Plesk Configuration File
Plesk Configuration File Linux Server/VPS :: /etc/psa/psa.conf
Plesk Configuration File Windows Server/VPS :: HKEY_LOCAL_MACHINE\SOFTWARE\PLESK\PSA Config\Config
It is set by variable "DUMP_D" To change Default Server Repository Directory PATH, you need to edit configuration file.
On Linux Server/VPS ::
Find the following variable and edit the server backup repository directory PATH as you wish. Default Directory Path for Plesk Backup is "/var/lib/psa/dumps"
# Backups directory
On Windows Server/VPS ::
You can edit default server backup repository directory path through registry ONLY.....
Right Click on variable "DUMP_D" select Modify and set the server backup repository path as you wish. Default Directory Path for Plesk Backup is "C:\Program Files\Parallels\Plesk\Backup\"