The HBA API does not provide the number of Fibre Channel adapters from the host system. The HBA API file version that is on your operating system might not be supported or the HBA API package might not be installed. Go to the HBA vendor website to obtain the latest version of the HBA API. For a list of supported HBAs and required HBA API levels by operating system, go to http://www.ibm.com/support/docview.wss?uid=swg21193154.