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7.2.3 Precautions for replacement
Note the following points when you replace a CPU memory unit:
■
Do not replace a CPU memory unit at the same time as the PSU backplane unit. If
you replace both a CPU memory unit and the PSU backplane unit at the same
time, the system will fail to operate normally. Replace the CPU memory unit or
PSU backplane unit, and then confirm that the newly installed part operates
normally by executing the showhardconf or showstatus command. Then, replace
the other Field Replaceable Units (FRUs).
■
When replacing the CPU memory unit, memory modules should be removed
from the old unit and remounted in the new one. Mount the new unit in the same
position as the old unit.
■
The weight of the CPU memory unit is 17 kg (37.4 lb). Maintenance must be done
by two people if the CPU memory unit is mounted at the 24 or higher U of the
rack. If you attempt to perform the maintenance work alone, you may injure
yourself or cause damage to the chassis.
■
For both the CPU memory unit upper and CPU memory unit lower, there are
eight types based on the combinations of CPU type and the number of memory
slots. Each type of CPU memory unit, both upper and lower, can be used in
combination with one another.
■
Before replacing the CPU memory unit lower, execute the dumpconfig command
to save the system setting information. When the CPU memory unit lower is
replaced, the CPU Activation setting information and CPU Activation keys may
be deleted. To restore the CPU Activation setting information and CPU Activation
keys that have been saved with the dumpconfig command, execute the restoreconfig
command.
■
The XCP firmware version must be the same before and after replacement of the
CPU memory unit lower. For checking the version, see "4.2.2 Confirming the
software and firmware configurations."
7.2.4 Precautions for installation
Note the following points when you expand a CPU memory unit upper:
■
You need to add four PCIe cables when connecting the CPU memory unit upper
to the CPU memory unit lower.
■
The 2-CPU configuration of the SPARC M10-4/M10-4S has four root complexes,
and the 4-CPU configuration can have four, seven or eight root complexes. If you
change a 2-CPU configuration into a 4-CPU configuration by adding CPU
memory units on site, Fujitsu recommends a configuration with four root
complexes. This configuration inherits the configuration and mounting rules of
the I/O bus of the 2-CPU configuration. Adopting a configuration with seven or
eight root complexes increases the maximum number of mounted PCIe cards.
However, since the I/O bus is reconfigured, the physical partition needs to be
reconfigured.
Chapter 7 Maintaining the CPU Memory Units 87