H3C UniServer R4300 G5, User Manual

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Both DDR4 and PMem 200 DIMMs are referred to as DIMMs in this document, unless otherwise
stated.
Guidelines
The server provides eight DIMM channels per processor and each channel has two DIMM slots. If
the server has one processor, the total number of DIMM slots is 16. If the server has two processors,
the total number of DIMM slots is 32.
You can install only DDR4 DIMMs on the server or install both PMem 200 and DDR4 DIMMs on the
server.
For PMem 200 DIMMs to operate correctly, make sure the PMem 200 firmware is compatible with
the BIOS version. For more information, see the corresponding BIOS release notes.
When you install a DIMM, use Table 8 to verify that it is compatible with the processors.
Table 8 DIMM and processor compatibility
Processor Memory type @ frequency
Intel Ice Lake
•
DDR4 @ 3200MHz
•
PMem 200 @ 2666MHz
NOTE:
•
The number of DIMMs installed in a channel does not affect the DIMM frequency. Each channel
supports a maximum of two DIMMs.
•
If the frequency of a processor is lower than the frequency of a connected DIMM, the DIMM
operates at the processor frequency. For example, for a DDR4 DIMM to operate at 3200 MHz,
you must also use a processor that can operate at 3200 MHz. For the frequency of a DIMM or
processor, use the query tool at
http://www.h3c.com/cn/Service/Document_Software/Document_Center/Server/ to filter
information by DIMM name or processor name.
Guidelines for installing only DDR4 DIMMs
When you install only DDR4 DIMMs, follow these restrictions and guidelines:
•
Make sure their corresponding processors are present before powering on the server.
•
Make sure all DDR4 DIMMs installed on the server have the same product code. For
information about DIMM product codes, use the query tool available from
http://www.h3c.com/cn/Service/Document_Software/Document_Center/Server/ .
•
For the configured memory mode to take effect, make sure the following installation
requirements are met:
Memory mode DIMM population requirements
Independent
•
If one processor is present, see Figure 54 .
•
If two processors are present, see Figure 55.
Mirror
•
A minimum of two DIMMs for a processor.
•
Strictly follow the DIMM installation schemes for installing a minimum of two
DIMMs per processor.

If one processor is present, see Figure 54 .

If two processors are present, see Figure 55