Installing A Memory Module - Lenovo ThinkServer TD330 Manual

The following table explains the memory module installation order for servers that have only one
microprocessor (CPU1) installed.
Table 8. Memory module installation order in sparing mode for servers with one microprocessor
CPU1 DIMM
DIMM installation order
The following table explains the memory module installation order for servers that have two microprocessors
(CPU1 and CPU2) installed.
Table 9. Memory module installation order in sparing mode for servers with two microprocessors
DIMM installation order
Memory module installation order in lockstep mode
This section explains the memory module installation order in lockstep mode. In this mode, the RAS features
are available. For more information about the RAS features, refer to the related section in "Features" on
page 7.
Notes:
• In this mode, slots A1 and A2 cannot be populated.
• In this mode, slots B1 and B2 must be populated identically as slots C1 and C2.
• All memory modules to be installed on a server must be the same type (LV RDIMM, RDIMM, or UDIMM)
with the same capacity, rank, voltage, and frequency.
The following table explains the memory module installation order for servers that have only one
microprocessor (CPU1) installed.
Table 10. Memory module installation order in lockstep mode for servers with one microprocessor
CPU1 DIMM
DIMM installation order
The following table explains the memory module installation order for servers that have two microprocessors
(CPU1 and CPU2) installed.
Table 11. Memory module installation order in lockstep mode for servers with two microprocessors
DIMM installation order

Installing a memory module

Attention: Do not open your server or attempt any repair before reading and understanding "Safety information"
on page iii and "Guidelines" on page 75.
This topic provides instructions on how to install a memory module.
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ThinkServer TD330 Hardware Maintenance Manual
A1 A2
1 2
CPU1 DIMM
A1 A2 B1 B2
1 2 5 6
A1 A2
CPU1 DIMM
A1 A2 B1 B2
1 2
B1 B2
3 4
C1 C2 A1 A2
9 10 3 4
B1 B2
1 2
A1 A2
C1 C2
5 6
C1 C2
5 6
CPU2 DIMM
B1 B2 C1 C2
7 8 11 12
C1 C2
3 4
CPU2 DIMM
B1 B2
C1 C2
3 4 7 8