Chapter 2 — Installing Hardware
21
Non-Mirrored Mode:
Memory mirroring requires the corresponding slot positions in a channel pairs must hold the same DIMM type
(manufacturing, speed, timing, organization and density). See the example that follows. Memory mirroring effec-
tively reduces available memory by half.
Non-Mirrored Configuration
Number of DIMMS
2
Slot 0 (CH 0 : BR 0); Slot 0 (CH 1 : BR 0)
4
Slot 0 (CH 0 : BR 0); Slot 0 (CH 1 : BR 0); Slot 0 (CH 2 : BR 1); Slot 0 (CH 3 : BR 1)
6
Slot 0 (CH 0 : BR 0), Slot 1 (CH 0, BR 0); Slot 0 (CH 1 : BR 0), Slot 1 (CH 1 : BR 0);
Slot 0 (CH 2 : BR 1), Slot 0 (CH 3 : BR 1)
8
Slot 0 (CH 0 : BR 0), Slot 1 (CH 0, BR 0); Slot 0 (CH 1 : BR 0), Slot 1 (CH 1 : BR 0);
Slot 0 (CH 2 : BR 1), Slot 1 (CH 2: BR 1); Slot 0 (CH 3 : BR 1), Slot 1 (CH 3 BR 1)
Note:
CH designates channel; BR designates branch.
In non-mirrored mode, the memory upgrade granularity for each pair of locked-step channels is two identical
DIMMS (one pair of corresponding slots on a selected branch).
Single Channel Mode
Populate DIMM slots in the following order:
Branch 0, CH 0, Slot 0
Branch 0, CH 1, Slot 0
Note:
All channels must hold the same DIMM type as defined in the previous instructions.
Any subsequent memory upgrades should follow the rules listed above for Non-Mirrored Mode and Mirrored
Mode.
The memory upgrade granularity is one DIMM.
Summary of Contents for -680 series
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