The following table shows the DIMM population sequence for rank sparing mode when two processors
(CPU1 and CPU2) are installed.
Table 18. Rank sparing mode with two processors
Total Processor 2 Processor 1 Total
DIMMs 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 DIMMs
4 18 17 6 5 4
6 18 17 8 7 6 5 6
8 20 19 18 17 8 7 6 5 8
10 20 19 18 17 8 7 6 5 4 3 10
12 20 19 18 17 16 15 8 7 6 5 4 3 12
14 20 19 18 17 16 15 10 9 8 7 6 5 4 3 14
16 22 21 20 19 18 17 16 15 10 9 8 7 6 5 4 3 16
18 22 21 20 19 18 17 16 15 10 9 8 7 6 5 4 3 2 1 18
20 22 21 20 19 18 17 16 15 14 13 10 9 8 7 6 5 4 3 2 1 20
22 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 22
24 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 24
Install a DIMM
Use this information to install a DIMM.
“Read the
installation
Guidelines” on
page 43
“Power off
the server
for this task”
on page 35
“ATTENTION:
Static Sensitive Device
Ground package before opening”
on page 45
Attention:
• Disconnect all power cords for this task.
• DIMMs are sensitive to static discharge and require special handling. In addition to the standard
guidelines for Handling static-sensitive devices:
– Always wear an electrostatic-discharge strap when removing or installing DIMMs. Electrostatic-
discharge gloves can also be used.
– Never hold two or more DIMMs together so that they touch. Do not stack DIMMs directly on top of
each other during storage.
– Never touch the gold DIMM connector contacts or allow these contacts to touch the outside of the
DIMM connector housing.
– Handle DIMMs with care: never bend, twist, or drop a DIMM.
Before installing a DIMM:
1. Touch the static-protective package that contains the new DIMM to any unpainted surface on the
outside of the server. Then, take the new DIMM out of the package and place it on a static-protective
surface.
2. Locate the required DIMM slot on the system board. See “DIMM installation rules” on page 73. Ensure
that you observe the installation rules and sequence.
78
User Guide for ThinkAgile HX1321 Node ThinkAgile HX3321 Node
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