Specifications

QSSC-S4R Technical Product Specification BIOS Initialization
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Figure 67. Minimal Optimal Population Upgrade for RAS Modes
x DIMM pairs {DIMM 1/B, DIMM 1/D}, {DIMM 1/A, DIMM 1/C} of Board 1 and 2 must be of same organization, size,
and speed for Mirroring RAS.
x The above population can be used to configure Mirroring, Sparing and Interleaving.
Figure 68. Incorrect population for mirroring and sparing
x DIMM 1/B and DIMM 1/D of Board 1 and 2 are identical in organization, size, and speed.
x DIMM 1/A and DIMM 1/C of Board 1 is identical in organization, size, and speed.
x As the population among the sockets are not identical, mirroring and sparing is NOT possible in this configuration.
16.2.9 Supported Memory Configurations
This section describes the supported DIMM population on QSSC-S4R 4S platform. Table 82. Standard QSSC-S4R 4S
Server Platforms DIMM Population Rules” describes memory configurations that are validated on QSSC-S4R 4S
Server platform. The generic principles and guidelines described in Section 16.2.7 apply to the following tables as well.