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.
10.3.4 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.
10.3.5 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
Maintenance and Service Guide
10 Hardware Description
Issue 06 (2019-08-10)
Copyright © Huawei Technologies Co., Ltd.
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