Memory Installation Guidelines; Memory Installation Positions - Huawei FusionServer Pro CH225 V5 Technical White Paper

Huawei FusionServer Pro CH225 V5 Compute Node
Technical White Paper

5.3.4 Memory Installation Guidelines

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5.3.5 Memory Installation Positions

A CH225 V5 supports a maximum of 24 DDR4 DIMMs. To maximize the
performance, balance the total memory capacity between the installed processors
and load the channels similarly whenever possible.
Issue 06 (2020-07-31)
Observe the following when configuring DDR4 DIMMs:
– Install DIMMs only when corresponding processors are installed.
– Do not install LRDIMMs and RDIMMs in the same server.
– Install filler DIMMs in vacant slots.
Observe the following when configuring DDR4 DIMMs in specific operating
mode:
– Memory sparing mode
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Comply with the general installation guidelines.
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Each memory channel must have a valid online spare configuration.
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The channels can have different online spare configurations.
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Each populated channel must have a spare rank.
– Memory mirroring mode
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Comply with the general installation guidelines.
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Each processor supports two integrated memory controllers (IMCs).
At least two channels of each IMC are used for installing DIMMs
(channels 1 and 2, or channels 1, 2, and 3). The DIMMs installed
must be identical in size and organization.
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For a multi-processor configuration, each processor must have a
valid memory mirroring configuration.
– Memory scrubbing mode
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Comply with the general installation guidelines.
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