IBM N3400, Installation And Setup Instructions

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Cabling a single-node N3400 (model A11)
Use these instructions to cable a single-node N3400 (model A11) to the storage expansion units.
Make sure that all storage expansion unit speed switches are set to the correct position. Refer to the
documents that came with the expansion unit for information about checking and setting the switch.
Note: SAS storage expansion units, such as the EXN3000 and EXN3500, do not have speed switches.
Notes:
v
Figure 9 shows storage system connections to EXN2000/EXN4000 expansion units. On EXN1000
expansion units, the positions of the In and Out ports are reversed from those of the
EXN2000/EXN4000.
v
Figure 9 shows only the first two storage expansion units in a loop. The number of storage expansion
units per loop might be different for your configuration.
1. Cable the N3400 port 0a to the first expansion unit module A ESH2/ESH4 or AT-FCX In port. See
1
in Figure 9.
2. Cable the N3400 port 0b to the first expansion unit module B ESH2/ESH4 or AT-FCX In port. See
2
in Figure 9.
3.
For any additional expansion units in a loop, connect the module A Out port to the next expansion
unit's module A In port. Repeat for module B. See
3
in Figure 9.
Note: Both the ESH2/ESH4 and the AT-FCX modules are self-terminating. The ESH2/ESH4 does not
have a terminate switch.
Continue with “Installing the power cables” on page 17.
7.3.2
7.3.1
PSU PSU
IN OUT
IN OUT
PSU PSU
IN OUT
IN OUT
PSU PSU
B
A
B
A
N3400
EXN
EXN
0a 0b 10101 e0P e0a e0b e0c e0d SAS
1
2
3
n340012
Figure 9. Cabling a single-node N3400
10