Fujitsu RX900 S1 User Manual

RX900 S1

Maintenance Manual

359

Basic rules for the population order of DIMM memory modules:

●

DIMM memory modules with different capacities are installed from highest 
to lowest capacity.

●

Subdivide the total number of DIMM memory modules such that the same 
multiple of four modules is placed on each CPUMEMR.

●

If there are DIMM memory modules left after each CPUMEMR has the same 
multiple of four DIMM memory modules, insert four DIMM memory modules 
on each CPUMEMRs, starting with CPUMEMR#1, until all DIMM memory 
modules are installed.

●

Avoid mixing of DIMM memory modules from different supplies as much as 
possible. Use at least DIMM memory modules of the same supplier in the 
upper part (slot 1F to 2H) and the lower part (slot 1A to 2D) of an individual 
CPUMEMR.

I

Only use identical DIMM memory modules in the minimum configuration.

 shows the DIMM slot population order and the mapping of DIMM slots 

to CPUs and IOHs for 4, 6, and 8 CPUMEMRs.

CPU#1 1

x

--

--

--

x

--

--

--

x

--

--

--

#1

2

x

x

--

--

x

x

--

--

x

x

--

--

3

x

x

x

--

x

x

x

--

x

x

x

--

4

x

x

x

x

x

x

x

x

x

x

x

x

CPU#2 1

x

--

--

--

x

--

--

--

x

--

--

--

#1

2

x

x

--

--

x

x

--

--

x

x

--

--

3

x

x

x

--

x

x

x

--

x

x

x

--

4

x

x

x

x

x

x

x

x

x

x

x

x

Table 5: DIMM slot population order and mapping of DIMM slots to I/O Hubs and CPUs