Parameter
Specifications
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a: If the Cascade Lake processor is used, the rated speed and maximum operating speed
of the RDIMM can reach 2933 MT/s. If the Skylake processor is used, the rated speed
and maximum operating speed of a DDR4 memory module can reach 2666 MT/s only.
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b: The maximum number of DDR4 memory modules is based on dual-processor
configuration. The value is halved for a server with only one processor.
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c: The maximum DDR4 memory capacity varies depending on the processor type. The
value listed in this table is based on the assumption that twenty-four 128 GB DDR4
memory modules are configured.
2.3.4 Memory Installation Guidelines
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Observe the following when configuring DDR4 memory modules:
–
Install memory modules only when corresponding processors are installed.
–
Do not install LRDIMMs and RDIMMs in the same server.
–
Install filler memory modules in vacant slots.
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Observe the following when configuring DDR4 memory modules in specific operating
mode:
–
Memory sparing mode
n
Comply with the general installation guidelines.
n
Each memory channel must have a valid online spare configuration.
n
The channels can have different online spare configurations.
n
Each populated channel must have a spare rank.
–
Memory mirroring mode
n
Comply with the general installation guidelines.
n
Install memory modules for channels 1 and 2 or channels 3 and 4. The
memory modules installed must be identical in size and organization.
n
For a multi-processor configuration, each processor must have a valid memory
mirroring configuration.
–
Memory scrubbing mode
n
Comply with the general installation guidelines.
2.3.5 Memory Installation Positions
A CH121 V5 supports a maximum of 24 DDR4 memory modules. Balanced memory
configuration is recommended for optimal memory performance.
FusionServer Pro CH121 V5 Compute Node
User Guide
2 Hardware Description
Issue 06 (2019-08-10)
Copyright © Huawei Technologies Co., Ltd.
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