User`s guide

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4: Internal Component Replacement and Upgrades
Each serverboard has twelve 240-pin DIMM slots that can support up to 96 GB of registered ECC
DDR3-1333/1066/800 SDRAM (for a total of 192 GB in the system).
Note: Check with your SGI sales or service representative for approved replacement or upgrade
DIMM memory modules.
Installing Memory Modules
Insert each memory module vertically into a slot using the information and illustrations in this
section. Pay attention to the notch along the bottom of the module to prevent inserting it
incorrectly.
To install a DIMM: Insert the module vertically and gently press down until it snaps into place.
Pay attention to the alignment notch at the bottom.
Repeat for all DIMMs.
To remove a DIMM: Use your thumbs to gently push the release tabs near both ends of the
memory module. This should release it from the slot.
Figure 4-1 DIMM Installation Example
Due to the memory allocation to system devices, the amount of memory that remains available for
operational use will be reduced when 4 GB of RAM is used. The reduction in memory availability
is disproportional.