User's Guide

1. Installing Internal Optional Devices
Express5800/R120d-1M User’s Guide
71
Chapter 2 Preparations
Memory Sparing feature can be used under the following conditions:
• DIMMs to be installed should have the same capacity.
• 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) in "Maintenance Guide", run SETUP, 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.
Memory controller
Memory controller
Standby
Running
Standby
Running
Spare set
#1
Spare set
#3
Spare set
#5
Spare set
#7
Spare set
#2
Spare set
#4
Spare set
#6
Spare set
#8