H3C UniServer R4900 G3, Руководство пользователя

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For a DIMM to operate at 2933 MHz, make sure the following conditions are met:
•
Use Cascade Lake processors that support 2933 MHz data rate.
•
Use DIMMs with a maximum of 2933 MHz data rate.
•
Install a maximum of one DIMM per channel.
The supported DIMMs vary by processor model, as shown in Table 14 .
Table 14 Supported DIMMs of a processor
Processor Supported DIMMs
Skylake Only DRAM DIMMs.
Cascade Lake
•
Only DRAM DIMMs.
•
Mixture of DCPMM and DRAM DIMMs.
Jintide-C series Only DRAM DIMMs.
Guidelines for installing only DRAM DIMMs
When you install only DRAM DIMMs, follow these restrictions and guidelines:
•
Make sure the corresponding processor is present before powering on the server.
•
Make sure all DRAM DIMMs installed on the server have the same specifications.
•
For the memory mode setting to take effect, make sure the following DIMM installation
requirements are met when you install DRAM DIMMs for a processor:
Memory mode DIMM requirements
Independent
•
If only one processor is present, see Figure 116 .
•
If two processors are present, see Figure 117 .
Mirror
Partial Mirror
•
A minimum of two DIMMs for a processor.
•
This mode does not support DIMM population schemes that are
not recommended in
Figure 116 and Figure 117 .
•
DIMM installation scheme:
{
If only processor 1 is present, see Figure 116 .
{
If two processors are present, see Figure 117 .
Memory Rank Sparing
•
A minimum of 2 ranks per channel.
•
DIMM installation scheme:
{
If only one processor is present, see Figure 116 .
{
If two processors are present, see Figure 117 .
NOTE:
If the DIMM configuration does not meet the requirements for the configured memory mode, the
system uses the default memory mode (Independent mode). For more information about
memory modes, see the BIOS user guide for the server.