Installing System Components
85
Mode-Specific Guidelines
The number of channels used and the allowable configurations depend on
the memory mode selected.
Advanced ECC (Lockstep) Mode Support
In this configuration, the two channels closest to the processor are combined
to form one 128-bit channel. This mode supports Single Device Data
Correction (SDDC) for both x4- and x8-based memory modules. Memory
modules must be identical in size, speed, and technology in
corresponding slots.
Memory Mirroring Support
The system supports memory mirroring if identical memory modules are
installed in the two channels closest to the processor (memory should not be
installed in the farthest channel). Mirroring must be enabled in the System
Setup program. In a mirrored configuration, the total available system
memory is one-half of the total installed physical memory.
Optimizer (Independent Channel) Mode
In this mode, all three channels are populated with identical memory
modules. This mode permits a larger total memory capacity but does not
support SDDC with x8-based memory modules.
A minimal single-channel configuration of one 1-GB memory module per
processor is also supported in this mode.
Table 3-1 and Table 3-2 show sample memory configurations that follow the
appropriate memory guidelines stated in this section. The samples show
identical memory-module configurations and their the physical and available
memory totals. The tables do not show mixed or quad-rank memory-module
configurations, nor do they address the memory speed considerations of any
configuration.
NOTE:
8-GB DIMMS are only supported on systems with hot-swappable
hard drives.
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Summary of Contents for DX6012S
Page 10: ...10 Contents ...
Page 40: ...40 About Your System ...
Page 62: ...66 Using the System Setup Program and UEFI Boot Manager ...
Page 118: ...122 Installing System Components ...
Page 134: ...144 Troubleshooting Your System ...
Page 144: ...154 Jumpers and Connectors ...
Page 146: ...156 Getting Help ...
Page 152: ...162 Index ...