Huawei FusionServer Pro 5288 V5 - Memory Installation Guidelines

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Each memory channel supports a maximum of 8 ranks. The number of memory
modules supported by each channel varies depending on the number of ranks
supported by each channel:
Number of memory modules supported by each channel ≤ Number of ranks supported
by each memory channel/Number of ranks supported by each memory module
Table 5-9 DCPMM
specications
Parameter Specications
Rated speed (MT/s) 2666
Operating voltage (V) 1.2
Maximum number of DCPMMs
12
a
Maximum capacity per DCPMM (GB) 512
Maximum memory capacity (GB)
7680
b
Maximum operating speed (MT/s) 2666
● a: The maximum number of DCPMMs is based on dual-processor
conguration. The value is halved for a server with only one processor.
● b: The maximum memory capacity varies depending on the CPU type and
DCPMM working mode. The value listed in this table is based on the
assumption that 12 DCPMMs and 12 DDR4 memory modules are used with
the L series CPUs and the DCPMMs work in AD mode.
● The information listed in this table is for reference only. For details, contact
your local Huawei sales representative.
5.4.2.4 Memory Installation Guidelines
● Observe the following when conguring DCPMMs:
– The DDR4 memory modules used with the DCPMMs include RDIMMs and
LRDIMMs.
– The DCPMMs used in a server must have the same part number (P/N
code).
– The DDR4 memory modules used with the DCPMMs in a server must
have the same part number (P/N code).
● Observe the following when
conguring DCPMMs in specic operating mode:
MM mode:
On the same server, it is recommended that the ratio of FM to NM be 2:1 to
16:1.
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● Near memory (NM): capacity of DDR4 DIMMs used as the cache.
● Far memory (FM): capacity of the DCPMMs in MM.
Huawei FusionServer Pro 5288 V5 Server
Technical White Paper 5 Hardware Description
Issue 10 (2020-12-15) Copyright © Huawei Technologies Co., Ltd. 31