Each SPARC T4-4 server in the SPARC SuperCluster T4-4 has sixteen express module slots. The following cards are installed in certain express module slots and are used to connect to these networks:
10 GbE network interface cards (NICs) – Used to connect to the 10 GbE client access network
InfiniBand host channel adapters (HCAs) – Used to connect to the private InfiniBand network
The express module slots used for each configuration varies, depending on the type and number of logical domains that are used for that configuration.