Memory Installation Guidelines; Memory Installation Positions - Huawei FusionServer Pro XH628 V5 Server Node Technical White Paper

Huawei FusionServer Pro XH628 V5 Server Node
Technical White Paper
Parameter
● a: The maximum number of DDR4 DIMMs is based on dual-processor
● b: The maximum DDR4 memory capacity varies depending on the processor
● 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

5.3.4 Memory Installation Guidelines

●
●

5.3.5 Memory Installation Positions

An XH628 V5 supports a maximum of 16 DDR4 DIMMs. To maximize the
performance, balance the total memory capacity between the installed processors
and load the channels similarly whenever possible.
Issue 05 (2020-09-03)
configuration.
type. The value listed in this table is based on the assumption that DIMMs
are fully configured.
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.
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
▪
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 DIMMs
(channels 1 and 2, or channels 1, 2, and 3). The DIMMs installed
must be identical in size and organization.
▪
For a multi-processor configuration, each processor must have a
valid memory mirroring configuration.
– Memory scrubbing mode
▪
Comply with the general installation guidelines.
Copyright © Huawei Technologies Co., Ltd.
5 Hardware Description
Specifications
26