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Table B-1
Specifications of CPU memory unit (SPARC M10-4/M10-4S)
Item Description
Maximum number of
CPU memory units
2
Location Inside of chassis
Type of maintenance Active/cold, inactive/cold, and system stopped
Maintenance category Replacement, expansion, and reduction
Table B-2
Specifications of crossbar unit (SPARC M10-4/M10-4S)
Item Description
Number of crossbar units 2
Location Rear of chassis
unit and lower unit.
The CPU memory unit lower consists of the following components.
■
CPU
■
Memory
■
XSCF
■
PCI Express (PCIe) backplane
The CPU memory unit upper consists of the following components.
■
CPU
■
Memory
CPU and XSCF are directly installed on the CPU memory unit. Thus you cannot
replace the CPU and XSCF individually.
Each CPU memory unit upper and CPU memory unit lower is available in eight
different types based on the combination of CPU type and the number of memory
slots.
Table B-1 lists the specifications of the CPU memory unit.
For the maintenance procedure, see "Chapter 7 Maintaining the CPU Memory Units."
B.2 Crossbar Unit
The crossbar units of the SPARC M10-4S and the crossbar box are crossbar switches
that logically connect the CPU memory unit and I/O unit. The crossbar unit has two
operation modes. One is normal mode that provides 2-way operation. The other is
degraded mode that provides 1-way operation, which is half of normal mode.
Table B-2 and Table B-3 list the specifications of the crossbar units of the SPARC
M10-4S and the crossbar box, respectively.
Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual
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December 2013468