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Chapter 2 Preparations
(3)
Memory sparing feature
The 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 active memory controller, the feature
automatically changes the active 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
76
To use the Memory Sparing feature, install N8102-693/694 additional memory card
Note
(two DIMMs of same model).
DIMMs installed in the system must be of the same model number.
The operating system can use the DIMMs as those with capacities less than the
Tips
actual physical capacities. The capacities vary depending on the number of DIMMs
and the physical capacity per DIMM.
Number of DIMMs
2
4
6
8
4
6
8
10
12
14
16
Express5800/R120g-2E User's Guide
1. Installing Internal Optional Devices
Capacity of DIMM installed
N8102-693 (16 GB x2)
24 GB
48 GB
72 GB
96 GB
48 GB
72 GB
96 GB
120 GB
144 GB
168 GB
192 GB
N8102-694 (32 GB x2)
48 GB
96 GB
144 GB
192 GB
96 GB
144 GB
192 GB
240 GB
288 GB
336 GB
384 GB
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