Specifications

BIOS Initialization QSSC-S4R Technical Product Specification
142
Table 82. Standard QSSC-S4R 4S Server Platforms DIMM Population Rules
Memory Board 1 Memory Board 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
x Dxx - Indicates DIMM on the memory boards.
x X – Indicates that the DIMM is populated.
x Sx - Indicates that the CPU socket is populated. S1 is CPU socket 1, S2 is CPU socket 2, S3 is CPU socket 3 and
S4 is CPU socket 4. Y indicating CPU socket is populated; N indicating CPU socket is not populated.
x S – Indicates whether the configuration supports the Spare mode of operation. It is one of the following: Y
indicating a Yes; N indicating a No.
x Intra M – Indicates whether the configuration supports the Intra Mirroring mode of operation. It is one of the
following: Y indicating a Yes; N indicating a No.
x Inter M – Indicates whether the configuration supports the Inter Mirroring mode of operation. It is one of the
following: Y indicating a Yes; N indicating a No.
x H - Indicates whether the configuration supports the Hemisphere mode of operation. It is one of the following: Y
indicating a Yes; N indicating a No.
x N - Identifies the total number of DIMMs that constitute the given configuration.
Detail of each memory RAS mode is described in the following section.
16.2.10 Modes of Operation – Memory RAS Features
QSSC-S4R server boards based on the Intel® 7500 chipset support the following memory RAS features:
x Lock Step mode
x Interleaving.
x Sparing Mode.
x Mirroring Mode.
x Hemisphere Mode
These standard RAS modes are used in conjunction with the standard Memory Test and Memory Scrub engines to
provide full RAS support. QSSC-S4R platforms will provide one set of RAS questions in BIOS Setup and will configure
common RAS across Sockets.