System Overview 1-9
Boardset Description
The modular scaleable architecture of the 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:
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Profusion carrier
Processor mezzanine board(s)
Front side bus (FSB) terminator modules
Cache coherency filters
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PCI hot-plug (PHP) I/O carrier
Low-voltage differential SCSI (LVDS) hot-swap disk backplane
I/O riser board
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Two memory modules
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Front panel controller board
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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.
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