Patent ID: 7865766

Claim:
A method, in a data processing system, comprising: coupling a first I/O hub adapter, in a host system of the data processing system, to both a first I/O planar and a second I/O planar of an I/O drawer that is remote from the host system; coupling a second I/O hub adapter, in the host system of the data processing system, to both the first I/O planar and the second I/O planar of the I/O drawer; storing at least one routing table, in the host system in the data processing system, for associating at least one first address range to the first I/O hub adapter and at least one second address range to the second I/O hub adapter; during normal operation, routing data through the first I/O hub adapter to both the first I/O planar and the second I/O planar of the I/O drawer based on the at least one routing table; and during the normal operation, routing additional data through the second I/O hub adapter to both the first I/O planar and the second I/O planar of the I/O drawer based on the at least one routing table.