Huawei FusionServer Pro 2288H V5 - Memory Installation Guidelines

A quad-rank LRDIMM generates the same electrical load as a single-rank RDIMM on a
memory bus.
Table 5-7 DDR4 memory
specications
Parameter Specications
Maximum capacity per DDR4 memory module (GB) 128
Rated speed (MT/s) 2933
Operating voltage (V) 1.2
Maximum number of DDR4 memory modules in a
server
a
24
Maximum DDR4 memory capacity of the server
(GB)
b
3072
Maximum operating
speed (MT/s)
1DPC
c
2933
d
2DPC 2666
● a: The maximum number of DDR4 memory modules is based on dual-
processor conguration. The value is halved for a server with only one
processor.
● b: The maximum DDR4 memory capacity varies depending on the processor
type. The value listed in this table is based on the assumption that memory
modules are fully
congured.
● c: DPC (DIMM per channel) indicates the number of DIMMs per channel.
● d: If the Cascade Lake processor is used, the maximum operating speed of a
memory module can reach 2933 MT/s. If the Skylake processor is used, the
maximum operating speed of a memory module can reach 2666 MT/s only.
5.4.4 Memory Installation Guidelines
● Observe the following when conguring DDR4 memory modules:
– Install memory modules only when corresponding processors are
installed.
– Do not install LRDIMMs and RDIMMs in the same server.
– Install ller memory modules in vacant slots.
● Observe the following when conguring DDR4 memory modules in specic
operating mode:
– Memory sparing mode
▪ Comply with the general installation guidelines.
▪ Each memory channel must have a valid online spare conguration.
Huawei FusionServer Pro 2288H V5 Server
Technical White Paper 5 Hardware Description
Issue 12 (2020-04-20) Copyright © Huawei Technologies Co., Ltd. 29