IBM DS4700 manual Left ESM Right ESM

2 1

Controller A

1 2

Controller B

Left ESM	Right ESM
	Right ESM
Left ESM

Left ESM Right ESM

Left ESM Right ESM

Left ESM Right ESM

ds470051

	Right ESM
Left ESM

ds470051

Figure 56. One DS4700 Express and up to six storage expansion enclosure — Recommended cabling

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.

Chapter 3. Cabling the storage subsystem 75