Lenovo ThinkServer TD330 Manual page 102

The following table explains the memory module installation rules for servers that have two microprocessors
(CPU1 and CPU2) installed. The "X" mark indicates the memory slots into which the memory modules
should be installed in different situations.
Note: All memory modules to be installed on a server must be the same type (LV RDIMM or RDIMM) with
the same rank, voltage, and frequency.
Figure 39. CPU1 DIMMs and CPU2 DIMMs
Table 3. Memory module installation rules for servers with two microprocessors
Two DIMMs
Four DIMMs
Six DIMMs
Eight DIMMs
Twelve DIMMs
The following section explains the memory module installation rules in independent mode, mirroring mode,
sparing mode, and lockstep mode.
Memory module installation order in independent mode
This section explains the memory module installation order in independent mode. In this mode, the RAS
features are not available. For more information about the RAS features, refer to the related section in
"Features" on page 7.
Note: All memory modules to be installed on a server must be the same type (LV RDIMM, RDIMM, or
UDIMM) with the same rank, voltage, and frequency.
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ThinkServer TD330 Hardware Maintenance Manual
CPU1 DIMM
A1 A2 B1 B2
X
X X
X X
X X X
X X X X
C1 C2 A1 A2
X
X
X X
X X X
X X X X
CPU2 DIMM
B1 B2 C1 C2
X
X X
X X
X X X X