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2 Boardset Description
The modular scaleable architecture of the SRPL8 rack server supports symmetrical
multiprocessing (SMP) and a variety of operating systems. The server comes with Peripheral
Component Interconnect (PCI) and Industry Standard Architecture (ISA) buses. ISA buses are
used internally only. The system has no ISA slots or a way for the user to make use of the ISA
bus. The server boardset consists of a set of printed circuit boards:
• Profusion carrier
Processor mezzanine board(s)
Front side bus (FSB) terminator modules
Cache coherency filters
• PCI hot-plug (PHP) I/O carrier
Low-voltage differential SCSI (LVDS) hot-swap disk backplane
I/O riser board
• Two memory modules
• Front panel controller board
• Midplane
The profusion carrier is mounted horizontally toward the front of the chassis, and the PHP I/O
carrier is mounted horizontally towards the rear of the chassis. The carriers plug into connectors
on the midplane mounted between the two carriers. The midplane interconnects the carriers with
the memory modules and power supplies. The front panel board is mounted in front of the
profusion carrier in the same plane. This board provides the user interface, server management,
cooling system control, and power control.