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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
Note
To use Memory Sparing feature, install N8102-564 additional memory board (three DIMMs
of same model).
DIMMs to be installed in sparing set must have same capacity.
The operating system recognizes the DIMMs as those with capacities less than the
Tips
actual physical capacities. (The recognized capacities vary depending on the number of
DIMMs and the physical capacity per DIMM.)
DIMMs to be installed in sparing set must have same capacity.
Capacity of DIMM
Number of
installed
DIMMs
N8102-564 (16GB x2)
1
2
4
6
2
4
8
12
Express5800/T120e User's Guide
24GB
48GB
72GB
48GB
96GB
144GB
1. Installing Internal Optional Devices
77
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