Chapter 2. Architecture and technical overview
33
2.5.3 CDIMM plugging order
Each processor module has two memory controllers. Each of these memory controllers
connects to four CDIMM slots within the system. The physical connections and location codes
of the memory slots are shown in Figure 2-7.
Figure 2-7 Memory slot physical connections and location codes for the Power E850C
Table 2-4 shows the recommended plugging order for CDIMMs in a Power E850C server with
two processor modules installed to ensure optimal performance and CDIMM size flexibility.
Each number represents two matching capacity CDIMMs in two adjacent CDIMM slots.
Table 2-4 Memory plugging order for Power E850C with two processor modules
Table 2-4 shows the following pairs:
First CDIMM pair is identical and plugged into P2-C16 and P2-C17
Second CDIMM pair is identical and plugged into P2-C24 and P2-C25
Third CDIMM pair is identical and plugged into P2-C12 and P2-C13
Fourth CDIMM pair is identical and plugged into P2-C20 and P2-C21
Fifth CDIMM pair is identical and plugged into P2-C14 and P2-C15
Sixth CDIMM pair is identical and plugged into P2-C22 and P2-C23
Seventh CDIMM pair is identical and plugged into P2-C10 and P2-C11
Eighth CDIMM pair is identical and plugged into P2-C18 and P2-C19
Processor Module 0
Processor Module 1
Memory Controller 1
Memory Controller 0
Memory Controller 1
Memory Controller 0
C16 C17
C14 C15
C12 C13
C10 C11
C24 C25
C22 C23
C20 C21
C18 C19
1
5
3
7
2
6
4
8
Processor
Module 0
CDIMM
P2
-C16
CDIMM
P2
-C17
CDIMM
P2
-C14
CDIMM
P2
-C15
CDIMM
P2
-C12
CDIMM
P2
-C13
CDIMM
P2
-C10
CDIMM P2
-C11
Memory
Controller
1
Memory
Controller
0
Processor
Module 1
CDIMM
P2
-C24
CDIMM
P2
-C25
CDIMM
P2
-C22
CDIMM
P2
-C
23
CDIMM
P2
-C20
CDIMM
P2
-C19
CDIMM
P2
-C18
CDIMM
P2
-C17
Memory
Controller
1
Memory
Controller
0
Processor
Module 2
CDIMM
P2
-C32
CDIMM
P2
-C33
CDIMM
P2
-C30
CDIMM
P2
-C31
CDIMM
P2
-C28
CDIMM P2
-C29
CDIMM
P2
-C26
CDIMM
P2
-C27
Memory
Controller
1
Memory
Controller
0
Processor
Module 3
CDIMM
P2
-C40
CDIMM
P2
-C41
CDIMM
P2
-C38
CDIMM
P2
-C39
CDIMM
P2
-C36
CDIMM
P2
-C37
CDIMM
P2
-C34
CDIMM
P2
-C35
Memory
Controller
1
Memory
Controller
0
Summary of Contents for E850C
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