Huawei FusionServer Pro 2488 V5 - Page 32

NO TICE
The total memory capacity cannot exceed the maximum memory capacity
supported by the CPUs.
● Use the Computing Product Compatibility Checker to determine the
capacity type of a single DIMM.
● The maximum number of DIMMs supported by a server varies depending on
the CPU type, memory type, rank quantity, and operating voltage.
NO TE
Each memory channel supports a maximum of 8 ranks. The number of DIMMs
supported by each channel varies depending on the number of ranks supported by
each channel:
Number of DIMMs supported by each channel ≤ Number of ranks supported by each
memory channel/Number of ranks supported by each DIMM
● A memory channel supports more than eight ranks for LRDIMMs.
NO TE
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 DIMM (GB) 128
Rated speed (MT/s) 2933
Operating voltage (V) 1.2
Maximum number of DDR4 DIMMs in a server
a
32
Maximum DDR4 memory capacity of the server
(GB)
b
4096
Maximum operating
speed (MT/s)
1DPC
c
2933
d
2DPC 2666
● a: The maximum number of DDR4 DIMMs is based on four-processor
conguration. The value is halved for a server with two processors.
● 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 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
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.
Huawei FusionServer Pro 2488 V5 Server
Technical White Paper 5 Hardware Description
Issue 11 (2020-09-03) Copyright © Huawei Technologies Co., Ltd. 26