NEC Express5800/R120e-2M User Manual page 77

Chapter 2 Preparations
(3)
Memory Sparing Feature
Memory Sparing feature puts a memory channel 2 of a memory controller in each CPU into standby status as
spare devices. If a correctable error occurs in a DIMM in the running memory controller, the feature
automatically changes the running DIMM from the failed one to a DIMM in the standby state to continue the
processing.
The following table shows configuration allowable for memory sparing and system logical memory capacity.
Number of
CPUs
1
2
• To use Memory Sparing feature, install N8102-551/552/553/554 additional
Note
memory board (three DIMMs of same model).
• DIMMs installed in the system must be of the same model number.
Tips
The operating system recognizes the DIMMs as those with capacities less than
the actual physical capacities. (The recognized capacities vary depending on the
number of DIMMs and the physical capacity per DIMM.)
Number of
DIMMs
4GB
3 8GB
6 16GB
9 24GB
12 32GB
6 16GB
12 32GB
18 48GB
24 64GB
Express5800/R120e-2M User's Guide
1. Installing Internal Optional Devices
Capacity of DIMM installed
8GB
16GB
32GB
48GB
48GB
32GB
64GB
96GB
128GB
16GB
40GB
80GB
120GB
160GB
80GB
160GB
240GB
320GB
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