Using The Memory Ras Features - NEC N8100- 1241F User Manual

9-30 Upgrading Your Server

Using the Memory RAS Features

The server has the memory mirroring and online spare memory features as well as the chipkill ECC
memory feature, which can automatically correct a memory error (multi-bit error) causing system
shutdown.
IMPORTANT:
features are not available in the normal memory configuration. (The
chipkill ECC memory feature can operate in any configuration.)
The memory area on the motherboard of the server is divided into two memory branches as shown
in the figure below.
#11
Group #1
#12
Group #3
#13
Group #5
The memory mirroring and online spare memory features keep memory redundancy between
memory branches and within a memory branch by monitoring or altering memory active/inactive
status, respectively.
The memory mirroring and online spare memory
Memory controller
Memory branch #0
#21
#22
#23
Mother board
Memory branch #1
#41
#31
#42
#32
#43
#33
Group #2
Group #4
Group #6