The Oracle Exadata Storage Server X7-2L EF and HC servers each have eleven PCIe slots. These can contain cards installed at the factory, or ordered from Oracle and installed on site. All PCIe cards must be of a type supported for your server. On only the HC server, one PCIe slot can accommodate only an internal HBA card.
Some PCIe cards require configuration, either when you install the server, or when you add or change them. For a list of PCIe cards, refer to the Product Notes for the related Oracle Server X7-2L at http://www.oracle.com/goto/x7-2l/docs.