IBM 2858-A10, Installation And Setup Instructions

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1. Cable the controller port 0a to the expansion unit module A ESH4 or AT-FCX In port. See
1
in
Figure 9.
2.
Cable the controller port 0c to the expansion unit module B ESH4 or AT-FCX In port. See
2
in
Figure 9.
3. For any additional expansion units in a loop, connect the expansion unit module A Out port to the
next expansion unit's module A In port. Repeat for module B.
Note: Both the AT-FCX and the ESH4 modules are self-terminating.
4. If you are cabling a second loop, repeat steps 1 to 3, using controller ports 0b and 0d. See
3
in
Figure 9.
Cabling a high-availability (active/active) dual-controller N6000 series
filer
Use these instructions to connect a high-availability (active/active) dual-controller N6000 series filer
(models A20, A21, A22) to the storage expansion units.
Make sure that all expansion unit speed switches are set to the 2 Gb or 4 Gb (if supported) position. If
necessary, see the documents that came with the expansion unit for information about checking and/or
setting the switch.
Notes:
v
SAS storage expansion units, such as the EXN3000 and EXN3500, do not have speed switches.
v Illustrations in this procedure show storage system connections to EXN2000/EXN4000 storage
expansion units. On EXN1000 expansion units, the positions of the In and Out ports are reversed from
those of the EXN2000/EXN4000.
PSU
Controller
A
0d 0c 0b 0a
IN OUT
IN OUT
IN OUT
IN OUT
Module A
Module B
PSU
PSU
PSU
PSU
1
2
3
n600013
Figure 9. Cabling a single-controller configuration
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