IBM DS4500 manual Storage expansion enclosure Out ESM board

Last storage expansion enclosure

ESM boards

Loop A

Fibre Channel cable

First storage expansion enclosure

Storage server

In Out

ESM board

Figure 9. Connecting two storage expansion enclosures into drive loop A

For the location of the ports on the storage expansion enclosure ESM board, see Figure 10.

Storage expansion enclosure

In Out In Out

ESM board

Figure 10. Storage expansion enclosure environmental services module (ESM) board in and out ports

2.Connect the same first two storage expansion enclosures to drive loop B, as shown in Figure 11 on page 12.

Starting with the first storage expansion enclosure, connect a fiber-optic cable from the In port on the right ESM board to the Out port on the right ESM board in the second (next) storage expansion enclosure.

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