Memory Protection; Dimm Installation Rules - Huawei 2288H V5 User Manual

2288H V5 Server
User Guide
No.
5
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5.13.5 Memory Protection

The following memory protection technologies are supported:
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5.13.6 DIMM Installation Rules

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Issue 04 (2018-09-04)
Description
Maximum memory speed
CAS latency
DIMM type
ECC
Mirrored Channel Mode
SDDC
Rank Sparing Mode
Lockstep
General DIMM Installation Rules
– Install DIMMs only when the corresponding CPU is installed.
– Do not install LRDIMMs and RDIMMs on the same server.
5.13.2 Memory Subsystem Architecture
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sequence.
– When installing DIMMs in a memory channel, install DIMMs with more ranks and
then DIMMs with fewer ranks (starting from the slot farthest from the CPU). For
example, install quad-rank DIMMs, then dual-rank DIMMs, and then single-rank
DIMMs.
– Install DIMM fillers in vacant DIMM slots.
DIMM Installation Rules for Specific Modes
– Installation Rules for the Memory Sparing Mode
Follow the general DIMM installation rules.
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The spare configuration of each channel must be valid.
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Different channels can have different spare configurations.
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Each channel with DIMMs installed must have a spare rank.
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– Installation Rules for the Memory Mirroring Mode
Follow the general DIMM installation rules.
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Install DIMMs in either channels 1 and 2, or channels 3 and 4. The installed
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DIMMs must be of the same size and organization.
For a multi-CPU configuration, each CPU must have a valid memory
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mirroring configuration.
Copyright © Huawei Technologies Co., Ltd.
5 Optional Part Installation
Definition
l 2400 MT/s
l 2666 MT/s
l P: 15-15-15
l T: 17-17-17
l R: RDIMM
l L: LRDIMM
provides the DIMM installation
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