Filter
Top Products
Appendix D. Cabling the System Rack and I/O Rack
The minimum system consists of two racks. The system rack contains the system
processors, memory and supporting hardware. The I/O rack contains I/O drawer(s) with
PCI adapters, disk drives, and media drives. The S80 and S85 must have a minimum
of one I/O drawer. This drawer is called the primary I/O drawer and it contains the
service processor for the system. Additional I/O drawers can be added to the system.
These drawers are called secondary I/O drawers. Secondary I/O drawers are connected
to the system rack but do not contain a service processor. The S80 and S85 support up
to a total of four I/O drawers in various I/O rack configurations.
There are two steps to connecting the system rack to the I/O drawers in their I/O racks.
1. Connect the JTAG cable and the operator panel cable. These two cables are
connected only between the system rack and the primary I/O drawer. See
“Connecting JTAG and Operator Panel Cables” on page 48 for diagrams showing
these cables.
2. Connect the RIO cables and the SPCN cables. These cables connect between the
system rack and all the I/O drawers in loops. See “Connecting RIO and SPCN
Cables” on page 57 for diagrams showing these cables.
47