Online Spare Memory - NEC Express5800/120Rg-1 User Manual

Online Spare Memory

The online memory spare feature puts a group of memory devices within a memory branch into
standby status as spare devices. If an unrecoverable error occurs in a DIMM of the running group,
the feature automatically changes the running DIMM from the failed one to a DIMM in the standby
group to continue the processing.
In operation
Standby
NOTE:
with capacities less than the actual physical capacities. (The recognized
capacities vary depending on the number of DIMMs and the physical
capacity per DIMM.)
Memory controller
Branch #0
Group #1
Group #3
Group #5
The operating system recognizes the memory devices as those
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Mother board
Branch #1
Group #2
Group #4
Group #6