NEC N8100-1573F User Manual page 271

Install DIMMs in the following order.
When Dual Channel memory mode is not used:
Install DIMM one by one in any order.
When Dual Channel memory mode is used:
Observe the following conditions.
– Install two DIMMs in pair.
– Two DIMMs must be of same density, same capacity.
– Two DIMMs must be installed in slots #1 and #2, or #3 and #4.
(Two pairs can be installed in any order.)
The table below shows installation examples.
Installation Dual channel
example memory mode
1 Active
2 Active
3 Inactive
4 Inactive
Slot 1
1GB DIMM 1GB DIMM
(factory-installed) (factory-installed)
1GB DIMM
1GB DIMM
(factory-installed)
1GB DIMM
1GB DIMM
(factory-installed)
1GB DIMM
(Not installed)
(factory-installed)
Upgrading Your Server 9-15
Slot 2 Slot 3
(Not installed) (Not installed)
2GB DIMM
2GB DIMM
2GB DIMM
Slot 4
2GB DIMM
(Not installed)
2GB DIMM