Exp810 Port Labels - IBM DS4800 Installation, User And Maintenance Manual

drive cabling topologies" on page 69) that most closely matches your
configuration. Figure 45 shows the name of the ESM ports in the EXP810
storage expansion enclosures.
Figure 45. EXP810 port labels
a. Start with the first storage expansion enclosure from the group of EXP810
drive expansion enclosures that will be cabled together. Connect the 1A port
on the left ESM board to the 1B port on the left ESM board of the second
(next) enclosure. (See callout 2 in Figure 46 on page 66.)
b. On the first storage expansion enclosure from the group of drive expansion
enclosures that will be cabled together, connect the 1B port on the right
ESM board to the 1A port on the right ESM board of the second (next)
enclosure. (See callout 8 in Figure 46 on page 66.)
c. If you are cabling more storage expansion enclosures to this group, repeat
steps 3a and 3b for all enclosures except the final enclosure in the loop,
starting with the second enclosure. (See callouts 3 and 4 for the left ESM
connections and callouts 7 and 6 for the right ESM connections in Figure 46
on page 66.)
Chapter 3. Cabling the storage subsystem
65