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For the location of the ports on the storage expansion enclosure ESM board,
see Figure 60.
d3nu4205a
Right ESMLeft ESM
Out
Out
InIn
EXP500/100/7x0
2. Connect the same first two storage expansion enclosures to drive loop B, as
shown in Figure 61 on page 83.
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.
First storage
expansion enclosure
Third storage
expansion enclosure
Right ESMLeft ESM
Out
Out
In
d3nu4042c
Right ESMLeft ESM
Out
Out
In
Second storage
expansion enclosure
Right ESMLeft ESM
EXP500/100/7x0
In
In
Out
Out
In
Right ESMLeft ESM
Out
Out
In
Fourth (last) storage
expansion enclosure
In
In
EXP500/100/7x0
EXP500/100/7x0
EXP500/100/7x0
LoopA
Figure 59. Connecting two EXP500, EXP100, EXP700, or EXP710 storage expansion
enclosures into drive loop A
Figure
60. EXP500, EXP100, EXP700, or EXP710 storage expansion enclosure ESM board
In and Out ports
82 IBM TotalStorage DS4500 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide