NEC N8100-2089F User Manual page 79

Chapter 2 Preparations
Memory Sparing feature can be used under the following conditions:

DIMMs to be installed should have the same model number.

Refer to Chapter 2 (1. System BIOS) in "Maintenance Guide", check if your server supports Memory
Sparing feature.
Select Advanced  Memory Configuration  Memory Information, and check if Supported is
displayed in Sparing.

Refer to Chapter 2 (1. System BIOS Setup) in "Maintenance Guide", change parameters as shown below,
save the settings and exit from SETUP.
[Advanced] – [Memory Configuration] – [Memory RAS Mode] : Change to [Sparing]

After restart, run SETUP again, and check if "Spared" is displayed for the following parameter.
Advanced  Memory Configuration  Memory Information  CPUx_DIMMx Status

Installation order depends on CPU configuration. See the figure below.
2-CPU Configuration
Rear
1st set
1st set
3rd set
3rd set
5th set
5th set
6th set
6th set
4th set
4th set
2nd set
2nd set
The following Memory Sparing cannot be configured.

A DIMM of different model number is installed.

Memory Sparing with different memory channels
Notes on Configuring Memory Sparing
When you additionally install or remove DIMMs that unable to configure Memory Sparing configuration,
Memory RAS Mode is changed to "Independent".
"Spared" is removed from Advanced  Memory Configuration  Memory Information  CPUx_DIMMx
Status xxxx MB (Spared) in BIOS SETUP.
Express5800/T120e User's Guide
1. Installing Internal Optional Devices
Front 1-CPU configuration
1st set
1st set
2nd set
2nd set
3rd set
3rd set
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