Barman TODO - Backlog of features for Barman

* Cluster-awareness
* TAR copy method
* TAR storage strategy for backups
* Centralised WAL hub capability (streaming server)
* Export/Import of backups
* External backup sources (e.g. S3)
* Improve recovery support
* Sandbox recovery
* Logical backup integration (pg_dump on sandbox instances)
* WAL retention policies
* Grandfather-Father-Son backup
* Deep Backup validation
* SSH only connections
* ...
