Fujitsu M10-4 Service Manual page 75

remove the CPU memory unit upper.
If PCI Express cables are not connected to the CPU memory unit lower, you need
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to add PCI Express cables.
If PCI Express cables are connected to the CPU memory unit lower, you need to
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add only one PCI Express cable.
If the CPU memory unit upper for the 2CPU configuration of the SPARC M10-4/
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M10-4S is installed, the root complex is also installed. Then, by enabling the I/O
bus reconfiguration function(*1), the I/O bandwidth increases, and the PCIe card
installation rules(*2) change. In addition, the I/O bus reconfiguration also changes
the device path of the I/O device(*3), so you may have to reconfigure the logical
domains.
The type of CPU memory unit varies depending on the number of CPU clocks.
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They cannot be mixed in the same device, but they can be mixed in a system with
a building block configuration.
*1 For details, see the section describing the setpparmode command in the Fujitsu SPARC
M12 and Fujitsu M10/SPARC M10 XSCF Reference Manual.
*2 For details, see the Fujitsu M10/SPARC M10 Systems PCI Card Installation Guide.
*3 For details, see "A.5 SPARC M10-4 Device Paths" or "A.6 SPARC M10-4S Device Paths"
in the Fujitsu SPARC M12 and Fujitsu M10/SPARC M10 System Operation and Administration
Guide.
Precautions for memory expansion
Observe the memory installation rules when you expand memory. For details, see
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"2.2.1 Memory installation
When you expand memory by 64 GB, apply XCP 2090 or later.
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Unless memory modules of 512 GB (64 GB DIMM x 8) are mounted in the 16
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DIMM slots under a CPU, memory modules of up to two different capacities can
be mounted together. In this case, use the same type within each memory group.
Note - When you expand memory with a different capacity, apply XCP 2052 or later.
Precautions for internal disk expansion
To expand an internal disk, remove the hard disk drive filler unit from the slot in
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which you will install the internal disk. Store the removed filler unit in a safe place
because it will be needed if you subsequently remove the internal disk.
Precautions for PCIe card expansion
Set a multipath depending on the use of the PCIe card when performing active/hot
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maintenance or active/cold maintenance with PHP.
For active addition using PHP, confirm that the card supports PHP as described in
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"Appendix A Cards That Support PCI Hot Plug and Dynamic Reconfiguration"
in the Fujitsu M10/SPARC M10 Systems PCI Card Installation Guide. For active
rules."
Chapter 4 Preparation and Precautions for Maintenance 61