IBM DS4500 Portable Media Storage User Manual


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Connecting the redundant EXP810 drive loop to the DS4500: After you
configure the redundant drive loop using the EXP810 storage expansion
EXP810
ESM B
ESMA
EXP810
ESM B
ESMA
EXP810
ESM B
ESMA
EXP810
ESM B
ESMA
Port 1B
Port 1B
Port 1A
Port 1B
Port 1A
Port 1A
Port 1B
Port 1A
Port 1B
Port 1B
ds4500_8105
Loop B
Loop A
First storage
expansion enclosure
Second storage
expansion enclosure
Third storage
expansion enclosure
Fourth storage
expansion enclosure
Port 1A
Port 1B
Port 1A
Port 1B
EXP810
ESM B
ESMA
EXP810
ESM B
ESMA
EXP810
ESM B
ESMA
EXP810
ESM B
ESMA
Port 1B
Port 1B
Port 1A
Port 1B
Port 1A
Port 1A
Port 1B
Port 1A
Port 1B
Port 1B
Loop D
Loop C
First storage
expansion enclosure
Second storage
expansion enclosure
Third storage
expansion enclosure
Fourth storage
expansion enclosure
Port 1A
Port 1B
Port 1A
Port 1B
Storage
expansion
enclosure
group 1
Storage
expansion
enclosure
group 2
Storage Subsytem
Figure 71. Connecting a second redundant EXP810 storage expansion enclosure group
(loops C and D)
Chapter 3. Cabling the storage subsystem 93
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