NEC N8100-1793F User Manual page 73

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
Note
To use Memory Sparing feature, install N8102-476/477/499/500 additional memory board
(three DIMMs of same model).
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
2GB
3 4GB
6 8GB
9 12GB
12 16GB
6 8GB
12 16GB
18 24GB
24 32GB
Express5800/R120d-2M User's Guide
1. Installing Internal Optional Devices
Capacity of DIMM installed
4GB 8GB
8GB 20GB
16GB 40GB
24GB 60GB
32GB 80GB
16GB 40GB
32GB 80GB
48GB 120GB
64GB 160GB
16GB
40GB
80GB
120GB
160GB
80GB
160GB
240GB
320GB
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