xFusion Digital Technologies FusionServer G5500 V6, Руководство пользователя

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FusionServer G5500 V6 Server
Technical White Paper
5 Hardware Description
2023-02-14 32
⚫
Each memory channel supports more than eight ranks for load-reduced DIMMs
(LRDIMMs).
A quad-rank LRDIMM generates the same electrical load as a single-rank RDIMM on a memory
bus.
Table 5-6 DDR4 DIMM specifications
Parameter Value
Capacity per DDR4
DIMM (GB) 16 32 64 128 256
Type RDIMM RDIMM RDIMM RDIMM RDIMM
Rated speed (MT/s) 3200 3200 3200 3200 2933
Operating voltage (V) 1.2 1.2 1.2 1.2 1.2
Maximum number of
DDR4 DIMMs in a
server
a
32 32 32 32 32
Maximum DDR4
DIMM capacity of the
server (GB) 512 1024 2048 4096 8192
Actual
rate
(MT/s) 1DPC
b
3200 3200 3200 3200 2933
2DPC 3200 3200 3200 3200 2933
⚫ 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: DIMM per channel (DPC) indicates the number of memory modules per
channel.
⚫ The information listed in this table is for reference only. For details, consult the
local sales representative.
5.4.1.4 DIMM Installation Rules
Observe the following rules when configuring DDR4 DIMMs:
⚫
Install memory modules only when corresponding processors are installed.
⚫
Do not mix LRDIMMs and RDIMMs in the same server.
⚫
Install filler memory modules in vacant slots.
Observe the following rules when configuring DDR4 DIMMs in specific operating
mode:
⚫ Rank sparing mode
− Comply with the general installation guidelines.
− At least two ranks must be configured for each channel.
− A maximum of two standby ranks can be configured for each channel.