IBM 86884RX Installation Guide - Page 30

processor located in Processor Socket 1. The Intel Itanium Architecture, Important

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Tip: Be careful when removing or installing either the memory-board assembly or the processor-board assembly, since it is possible to damage the midplane. Processors 1 & 3 (processors 2 & 4 are on the underside of the circuit board) Power modules ("pods") for each processor Figure 1-9 Processor-board assembly x450 models have either one or two processors installed. The unused CPU sockets will hold metal air baffles. The power pods shown in Figure 1-9 supply power to the processors and are equivalent to VRMs in other systems. Important: While processors should be installed in the order listed in Figure 1-9, the bootstrap processor (BSP) may not necessarily be the processor located in Processor Socket 1. The Intel Itanium Architecture processors are initialized and tested in parallel. The first processor to complete initialization becomes the BSP. The processor-board assembly is also equipped with LEDs for light path diagnostics for the following components: Each processor Each power module ("pod") In addition, a "remind" button is located on the upper side of the processor-board assembly. Pressing this button while the processor-board assembly is not attached to AC power will illuminate any light path LEDs that had been lit while the system was under power for a total of 10 seconds. 16 IBM ^ xSeries 450 Planning and Installation Guide

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16
IBM
^
xSeries 450 Planning and Installation Guide
Figure 1-9
Processor-board assembly
x450 models have either one or two processors installed. The unused CPU
sockets will hold metal air baffles. The power pods shown in Figure 1-9 supply
power to the processors and are equivalent to VRMs in other systems.
The processor-board assembly is also equipped with LEDs for light path
diagnostics for the following components:
±
Each processor
±
Each power module (“pod”)
In addition, a “remind” button is located on the upper side of the processor-board
assembly. Pressing this button while the processor-board assembly is not
attached to AC power will illuminate any light path LEDs that had been lit while
the system was under power for a total of 10 seconds.
Tip:
Be careful when removing or installing either the memory-board
assembly or the processor-board assembly, since it is possible to damage the
midplane.
Important:
While processors should be installed in the order listed in
Figure 1-9, the bootstrap processor (BSP) may not necessarily be the
processor located in Processor Socket 1. The Intel Itanium Architecture
processors are initialized and tested in parallel. The first processor to
complete initialization becomes the BSP.
Processors 1 & 3
(processors 2 &
4 are on the
underside of the
circuit board)
Power modules
(“pods”) for each
processor