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Memory rank sparing population sequence
Table 23. DIMM installation sequence (sparing mode)
Note: Signle-rank RDIMM is not supported by sparing. If you install signle-rank RDIMM, it switches to the
independent mode automatically.
Number of processors
Processor 1 installed
Processor 1 and 2 installed
Install a DIMM
Use this information to install a DIMM.
"Read the
installation
Guidelines" on
page 47
Attention: Memory modules 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 memory modules. Electrostatic-
discharge gloves can also be used.
• Never hold two or more memory modules together so that they touch. Do not stack memory modules
directly on top of each other during storage.
• Never touch the gold memory module connector contacts or allow these contacts to touch the outside of
the memory-module connector housing.
• Handle memory modules with care: never bend, twist, or drop a memory module.
The following illustration shows the location of the DIMM connectors on the system board. The following
illustration shows the location of the DIMM connectors on the system board.
Figure 43. Location of the DIMM connectors on the system board
Complete the following steps to install a DIMM.
Important: Before installing a memory module, make sure that you understand the required installation
order, depending on whether you are implementing memory mirroring, memory rank sparing, or independent
memory mode. See "Installation order" on page 76 for the required installation order.
Installation sequence (connectors)
6, 3, 7, 2, 8, 1, 5, 4
6, 14, 3, 11, 7, 15, 2, 10, 8, 16, 1, 9, 5, 13, 4, 12
"Power off
the compute
node
for this task"
on page 32
Chapter 8
"ATTENTION:
Static Sensitive Device
Ground package before opening"
on page 49
.
Hardware replacement procedures
77
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