NEC Express5800 140Rd-4 User Manual page 292

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Memory RAID Feature
If one of the four memory boards enc
bo ard to continue operation. To use this feature, four memory boards must be installed. Each memory board must have the
D IMM of same capacities.
T he table below shows combinations of memory boards installed.
Memory board 1
A 2GB (1GB*2)
B 8G B (2GB*4)
C 4G B (1GB*4)
Setting BIOS
SETUP and select [Advanced] → [Memory Configuration] → [Memory RAS Feature] in order and set as follows:
S tart
To enable the memory mirroring feature: Select [Mirror].
To enable the memory RAID feature: Select [RAID].
Others
Memory capacity displayed on the operating system = total capacity o
standby memory
Memory mirroring feature: 1/2 of actually installed memory capacity
Mem ory RAID feature: 3/4 of actually installed memory capacity
Ena bling the memory mirroring or memory RAID feature does not influence the operations of applications.
The each feature is automatically disabled when an error message is displayed:
The following indicates that the memory mirroring /memory RAID feature has worked:
a) The Redundancy lamp on the front panel of the server lights green.
b) The failing DIMM group is degraded when the server restarts.
c) If ESMPRO Agent has been installed, the following log is registered as a system log of Event Viewer:
Source name:
Event ID:
Ex lanation: p
Memory number: XX
Date/time:
d) If report setting is made through ESMPRO Agent, Manager reporting and ALIVE reporting is performed. The
repor t contents are as fol
Expl anation:
Mem ory number: XX
Date/ti me:
ounters an uncorrectable error, the memory RAID feature switches to the other memory
Memory board 2 Memory board 3
2GB (1GB*2) 2GB (1GB*2)
8GB (2GB*4) 8GB (2G *4)
4GB (1GB*4) 4GB (1G *4)
ESMCommonService
2313
Part of the DIMM was isolated due to a memory error.
XX
low s:
Part of the DIMM was isolated due to a memory error.
XX
Memory board 4
2GB (1GB*2)
B 8GB (2GB*4 )
B 4GB (1GB*4 )
f physically installed memory – capacity for