Lenovo ThinkServer TS100 User Manual page 41

Table 4. Dual-channel mode with single-rank and double-rank DIMMs
First pair
DIMM 1 DIMM 2
Single-rank Single-rank
Single-rank Single-rank
Double-rank Double-rank
Double-rank Double-rank
The following table shows the sequence in which DIMMs must be installed in
the server.
Table 5. DIMM installation sequence
Number of DIMMs
1
2 (interleaved configuration)
3
4 (interleaved configuration)
v The amount of usable memory will be reduced depending on the system
configuration. A certain amount of memory must be reserved for system
resources. To view the total amount of installed memory and the amount of
configured memory, run the Configuration/Setup Utility program and select
System Summary from the menu. For additional information, see Chapter 3,
"Configuring the server," on page 57.
v When you restart the server after you add or remove a DIMM, the server
displays a message that the memory configuration has changed.
Second pair
DIMM 3 DIMM 4
Single-rank Single-rank
Double-rank Double-rank
Single-rank Single-rank
Double-rank Double-rank
Installation sequence (connectors)
1
1, 3
The use of three DIMMs is not supported,
1, 3, 2, 4
Chapter 2. Installing optional devices
Remarks
This
configuration is
the second-best
choice.
This
configuration is
the best choice.
27