Product guide

QSSC-S4R Server System Product Guide Chapter 4: Serviceable Components
Version 1.0
71
Table 21. Standard Intel® Xeon® 7500 Platform 4S Server Platforms DIMM Population Rules
Memory Riser 1 Memory Riser 2
S
1
S
2
S
3
S
4 S Intra M Inter M H N
D
1
B
D
1
A
D
2
B
D
2
A
D
1
D
D
1
C
D
2
D
D
2
C
D
1
B
D
1
A
D
2
B
D
2
A
D
1
D
D
1
C
D
2
D
D
2
C
X X Y N N N N 2
X X X X Y N Y N Y 4
X X X X X X Y N N N N 6
X X X X X X X X Y Y Y N Y 8
X X X X X X X X X X X X Y Y Y N Y 12
X X X X X X X X X X X X X X X X Y Y Y N Y 16
X X Y Y N N Y N 4
X X X X Y Y N Y Y Y 8
X X X X X X Y Y N N N N 12
X X X X X X X X Y Y Y Y Y Y 16
X X X X X X X X X X X X Y Y Y Y Y Y 24
X X X X X X X X X X X X X X X X Y Y Y Y Y Y 32
X X Y Y Y Y N N Y N 8
X X X X Y Y Y Y N Y Y Y 16
X X X X X X Y Y Y Y N N N N 24
X X X X X X X X Y Y Y Y Y Y Y Y 32
X X X X X X X X X X X X Y Y Y Y Y Y Y Y 48
X X X X X X X X X X X X X X X X Y Y Y Y Y Y Y Y 64
 Dx - Indicates DIMM on the memory risers.
 Sx - Indicates that the CPU socket is populated. S0 is CPU socket 1,S1 is CPU socket 2, S2 is CPU socket 3, and
S3 is CPU socket 4. A Y indicates the CPU socket is populated. Blank indicates the CPU socket is empty.
 S – Indicates whether the configuration supports the Spare mode of operation. Y indicates a Yes, N indicates a
No.
 Intra M – Indicates whether the configuration supports the Intra Mirroring mode of operation. Y indicates a Yes, N
indicates a No.
 Inter M – Indicates whether the configuration supports the Inter Mirroring mode of operation. Y indicates a Yes, N
indicates a No.
 H - Indicates whether the configuration supports the Hemisphere mode of operation. Y indicates a Yes, N
indicates a No.
 N - Identifies the total number of DIMMs that constitute the given configuration.
 X – Indicates that the DIMM is populated.
Note: For detailed information and examples of RAS modes and DIMM configurations, see the QSSC-
S4R Server System Technical Product Specification.
Installing DIMMs
Caution
 Use extreme care when installing a DIMM. Applying too much pressure can damage the
connector. DIMMs are keyed and can be inserted in only one way.
 Hold DIMMs only by the edges. Do not touch the components or gold edge connectors.
 Install DIMMs with gold-plated edge connectors only.
 The maximum allowable DIMM height is 3 cm; do not install DIMMs that exceed this height.