HP Fabric Clustering System HP-UX Administrator's Guide, March 2008

User-Space RDMA Library
The User-Space RDMA Library exposes the IT-API interface and provides user-space access to
the RDMA hardware. Support for HP Fabric only is provided.
HCA
The HP Fabric Host Channel Adapter (HCA) for InfiniBand™ is the RDMA-capable network
interface card.
Kernel RDMA Subsystem
The Kernel RDMA Subsystem provides access to an extended IT-API for kernel applications
such as IPoIB. Support for HP Fabric only is provided.
Interaction with HyperFabric Driver
The HP Fabric Clustering System driver will not co-exist with HyperFabric driver versions prior
to B.11.23.01. The HyperFabric driver versions must be upgraded to version B.11.23.01 before
installing the HP Fabric Clustering System driver. Failure to upgrade the HyperFabric driver to
version B.11.23.01 will result in a system panic if HP Fabric Clustering System or HyperFabric
commands are issued.
About the HP Fabric Clustering System Software Suite 21