IBM DS4700 Service Manual

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

IBM DS4700 Specifications

General

Brand	IBM
Model	DS4700
Category	Storage
Language	English