Parameter
Specifications
Maximum DDR4 memory capacity of the node
(GB)
b
1024
Maximum operating
speed (MT/s)
1DPC
c
2933
d
2DPC
2666
● a: The maximum number of DDR4 DIMMs is based on dual-processor
configuration. 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 DIMMs
are fully configured.
● 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
DIMM can reach 2933 MT/s. If the Skylake processor is used, the maximum
operating speed of a DIMM can reach 2666 MT/s only.
2.3.1.4 Memory Installation Guidelines
●
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.
●
Observe the following when configuring DDR4 memory modules in specific
operating mode:
–
Memory sparing mode
▪
Comply with the general installation guidelines.
▪
Each memory channel must have a valid online spare configuration.
▪
The channels can have different online spare configurations.
▪
Each populated channel must have a spare rank.
–
Memory mirroring mode
▪
Comply with the general installation guidelines.
▪
Each processor supports two integrated memory controllers (IMCs).
At least two channels of each IMC are used for installing memory
modules (channels 1 and 2, or channels 1, 2, and 3). The installed
memory modules must be identical in size and organization.
▪
For a multi-processor configuration, each processor must have a
valid memory mirroring configuration.
–
Memory scrubbing mode
FusionServer Pro XH321 V5 Server Node
Maintenance and Service Guide
2 Hardware Description
Issue 17 (2021-03-09)
Copyright © Huawei Technologies Co., Ltd.
16
