Re: Enquiry about TDE with PgSQL

        Disk-level and partition-level encryption typically encrypts
        the entire disk or partition using the same key, with all data
        automatically decrypted when the system runs or when an authorized
-->     user requests it. For this reason, disk-level encryption is not
-->     appropriate to protect stored PAN on computers, laptops, servers,
        storage arrays, or any other system that provides transparent
        decryption upon user authentication.

The biggest possible downside of this standoff is that enterprises that need to meet PCI compliance specifications are forced to use specialized versions of Postgres or Postgres extensions that support TDE.