Some providers allow a very small number of local (in your hosting plan) backups to be stored. Others allow none at all, even if backups are enabled in your account.   When automated backups are allowed they will always replace the oldest one as soon as a new backup is made.   While this might not seem like a big deal, think of this: What if you realise your site has broken due to some updates, and you restore from a backup in your account...you realize that the only backup(s) available were made after your site broke!   It replaced the backups of the working site and you are stuck with a hot potato in your lap.