Chapter 3 Maintaining the Sun Fire Servers 3-13
FIGURE 3-8 Removing the Front Cover
3.11 HT Jumper Configuration for
Single-CPU Servers (Sun Fire X4100 M2
and X4200 M2)
An HT jumper is nothing more than a dummy CPU place-holder in CPU position 1
for single-CPU servers. These jumpers look like regular CPUs, with identical heat
sinks, and identical maintenance procedures for replacement.
The memory slots next to an HT jumper in CPU position 1 are never populated.
To identify the single-CPU server, check the CPU count during BIOS POST:
■ If CPU model is 22xx, then the CPU count is 2 (for single-CPU server).
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