The vCloud Director cells use a database to store shared information. Before you install vCloud Director on Linux, you must install and configure an external vCloud Director database. The vCloud Director appliance uses an embedded PostreSQL database.
For information about the supported vCloud Director databases, see the VMware Product Interoperability Matrixes.
Regardless of the database software you decide to use, you must create a separate, dedicated database schema for vCloud Director to use. vCloud Director cannot share a database schema with any other VMware product.