The vCloud Director cells use a database to store shared information. You must install and configure the vCloud Director database before you create the vCloud Director server group.
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.