IBM DS4500 Portable Media Storage User Manual


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First storage
expansion enclosure
Third storage
expansion enclosure
ds454mina
Second storage
expansion enclosure
Fourth (last) storage
expansion enclosure
Loop B
Storage
expansion
enclosure
group 1
Storage
expansion
enclosure
group 2
First storage
expansion enclosure
Third storage
expansion enclosure
Right ESMLeft ESM
Out
Out
In
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
Loop C
Loop D
First storage
expansion enclosure
Third storage
expansion enclosure
Right ESMLeft ESM
Out
Out
In
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 Loop B
Drive-side
mini hub 1
Drive-side
mini hub 2
Drive-side
mini hub 3
Drive-side
mini hub 4
Figure 66. Connecting two redundant EXP500, EXP100, EXP700, or EXP710 storage
expansion enclosure groups
Chapter 3. Cabling the storage subsystem 89
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