Connecting The Redundant Exp100, Exp700, Or Exp710 Drive Loop To The Ds4300; Connecting Additional Exp500, Exp100, Exp700, Or Exp710 Storage Expansion Enclosures To - IBM TotalStorage DS4300 Installation, User's, And Maintenance Manual

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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User's, and Maintenance Guide
In
Left ESM
Fourth (last) storage
expansion enclosure
EXP100/7x0
In
Left ESM
Third storage
expansion enclosure
EXP100/7x0
In
Left ESM
Second storage
expansion enclosure
EXP100/7x0
Loop A
In
Left ESM
First storage
expansion enclosure
EXP100/7x0
Figure 47. Connecting additional EXP500, EXP100, EXP700, or EXP710 storage expansion
enclosures to drive loops A and B
Connecting the redundant EXP100, EXP700, or EXP710 drive
loop to the DS4300
After you configure the redundant drive loop using the EXP100, EXP700, or
EXP710 storage expansion enclosures, use the following procedure to connect a
redundant drive loop to the DS4300 Storage Subsystem. You will need two
fiber-optic cables to connect the redundant drive loop pair to the DS4300 Storage
Subsystem.
1. Connect drive loop A to the DS4300 Storage Subsystem, as shown in Figure 48
on page 65.
Starting with the last storage expansion enclosure in loop A, connect the In port
on the left ESM board to the expansion port located in the DS4300 controller A
module/CRU DS4300 Storage Subsystem.
Leave the Out port on the left ESM board on the first storage expansion
enclosure and the In (lower) connector on drive mini hub 4 unoccupied.
In
Out
Out
Right ESM
In
Out
Out
Right ESM
In
Out
Out
Right ESM
In
Out
Out
Right ESM
Loop B
d4300_43c