How can I manually backup a large Azure Flexible Postgres database?

I have a large (3TB+) single database on a Azure Postgres Flexible Server. This is a managed service, so it takes backups automatically and the frequency can be adjusted. As a disaster recovery/emergency option, I'd like to periodically take a snapshot of the database separately from these incremental backups and store it somewhere else. I don't need ongoing connectivity for incremental backups (current managed system does that), I just want a periodic backup that'd be restorable to a new server. I would just choose Azure's own Vaulted Backup option, which provides enough separation for this purpose. But according to the docs : >Vaulted backups are supported for server size <= 1 TB. If backup is configured on server size larger than 1 TB, the backup operation fails. So I'm looking for other options. I checked out Barman , which looks like it should be perfect. But the managed Postgres Flexible Server doesn't support ssh/rsync access and I'm getting conflicting info on whether pg_basebackup is supported--seems unlikely, along with other physical replication options. I can't use Azure's own tools to backup my server, it's too big. I can't use external tools, they can't have shell access. The last option is just pg_dump, which in my experience will take days to finish and may need to be performed on a point-in-time-restore so that performance isn't affected. I'd prefer to create and restore from a physical backup rather than logical, so this is a last resort. Is there a better option for a managed server this size than pg_dump?