Plesk

Using Database Backup Storage (Windows)

We recommend that you use export and import
operations to backup and restore databases. For details, see Exporting
and Importing Database Dumps
.

However, if you already have files in the database backup storage, then
you can access them in Websites & Domains > Backup Manager >
More Actions > Database Backup Repository. The only operations
you can do on database backup files are downloading and removing.