Question place of recovery of the backup

[Relttam]

I plant a database on a project following a bad manipulation, without making me too worry since I have the daily backup of Plesk. Plesk needs to have space equal to the size of my backup ... in the Root folder to copy the backup of my disk accessible in FTP.
I saw that we could recover the backup, but on my Mac, I only get an XML file I do not know what to do.
Is not it possible to define the place of recovery of the backup, because mine exceeds 20 GB and the Root space of my disk is not expandable at will.