IBM DS4700 EXPRESS, Инструкция по установке, использованию и обслуживанию

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Figure 57 on page 76 shows a cabling topology that is not recommended because
all six storage expansion enclosures are connected to a single drive port of the
dual-ported drive channel in each controller.
Left ESM
Left ESM
Right ESM
Right ESM
Controller A
Controller B
1
2
2
1
ds470051
Left ESM
Right ESM
Left ESM
Right ESM
Left ESM
Right ESM
Left ESM
Right ESM
ds470051
Figure 56. One DS4700 Express and up to six storage expansion enclosure —
Recommended cabling
Chapter 3. Cabling the storage subsystem
75