Installation and Troubleshooting Guide

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Spare Bank Support
If four identical single-rank memory modules are installed on a memory riser card, two of the four modules in the same rank can function as a spare bank if you
select the spare bank option using the System Setup program.
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Memory RAID Support
The system supports memory Redundant Array of Independent DIMMs (RAID) if identical memory modules are installed in riser cards A, B, C, and D (all four
memory riser cards are required for memory RAID support). Memory RAID must be enabled in the System Setup program.
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Memory Mirroring Support
The system supports memory mirroring if identical memory modules are installed in riser card A and B or in riser card C and D (riser cards A and B are a mirror
pair and riser cards C and D are a mirror pair). Mirroring must be enabled in the System Setup program.
Table6-2 and Table6-3 show examples of different memory configurations. Table6-3 lists the various allowable combinations of single- and dual-ranked
memory modules
Table 6-2. Sample Memory Configurations per Memory Riser Card
Table 6-3. Allowable Memory Module Configurations – Single-Ranked and
Dual-Ranked Memory Modules
NOTE: Spare bank is not support between memory riser cards.
NOTE: Spare bank is not supported if memory RAID is enabled.
NOTE: Spare bank is not supported if mirroring is enabled.
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Total Memory
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DIMM_1A
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DIMM_1B
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DIMM_2A
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DIMM_2B
512 MB
256 MB
256 MB
none
none
1 GB
256 MB
256 MB
256 MB
256 MB
1 GB
512 MB
512 MB
none
none
2 GB
512 MB
512 MB
512 MB
512 MB
2 GB
1 GB
1 GB
none
none
3 GB
1 GB
1 GB
512 MB
512 MB
4 GB
1 GB
1 GB
1 GB
1 GB
6 GB
2 GB
2 GB
1 GB
1 GB
8 GB
2 GB
2 GB
2 GB
2 GB
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DIMM_1A
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DIMM_1B
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DIMM_2A
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DIMM_2B
Single rank
Single rank
none
none