https://pgstef.github.io/2018/01/04/introduction_to_pgbackrest.html
https://fr.slideshare.net/slardiere/pgbackrest-pgdayfr
http://laetitia-avrot.blogspot.com/2017/02/faire-une-sauvegarde-avec-pgbackrest.html
http://laetitia-avrot.blogspot.com/2017/02/restaurer-avec-pgbackrest.html