pgBackRest has some new features that allow you to bundle files in your backup repo and do a block incremental storage. These can really help with storage efficiency and performance. David has some sample code to help you get started.
The pgBackRest team is pleased to announce the introduction of multiple repository support in v2.33. Backups already provide redundancy by creating an offline copy of your PostgreSQL cluster that can be used in disaster recovery.
Learn about pgBackRest, and open source tool for performing PostgreSQL backup and restore in an efficient and effective way.