IB Network Data Paths for a Database Domain

Note – The information in this section applies to a Database Domain that is either
a dedicated domain or a Database I/O Domain.

When a Database Domain is created, the Database Domain has the following IB
paths:

Compute server to both IB leaf switches in the expansion rack
Compute server to each storage server, through the IB leaf switches in the expansion rack
Compute server to the storage appliance, through the IB leaf switches in the expansion rack

The number of IB HCAs that are assigned to the Database Domain varies,
depending on the type of configuration.

For the IB HCAs assigned to a Database Domain, the following IB private
networks are used:

Storage private network: One IB private network for the Database Domains to communicate with each other and with the Application Domains running Oracle Solaris 10, and with the storage appliance
Exadata private network: One IB private network for the Oracle Database 11g RAC interconnects, and for communication between the Database Domains and the storage servers

The two ports on each IB HCA connect to different IB leaf switches
to provide redundancy between the compute servers and the leaf switches.