IBM 2858-A10, Инструкции по установке и настройке

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3. Cable Controller B port 0a to the Controller A/Loop 1 expansion unit module B ESH4 or AT-FCX In
port. See
3
in Figure 11.
4. Cable Controller A port 0c to the Controller B/Loop 1 expansion unit module B ESH4 or AT-FCX In
port. See
4
in Figure 11.
5. 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.
Dual-path Fibre Channel cabling
Use these instructions to implement dual-path Fibre Channel cabling in a high-availability (active/active)
configuration.
This step is optional. You must have ordered the "Dual-Path Fibre Channel Cabling" feature and/or
additional fiber cables and SFP Gigabit Interface Converters (GBICs) to implement this feature. Dual-path
Fibre Channel cabling only applies to high availability (active/active) A20/A21/A22 models. The purpose
of dual-path Fibre Channel cabling is to provide each controller node in a high availability (active/active)
configuration with redundant Fibre Channel paths (Loop A and Loop B) to each loop of disk storage
expansion units. It improves reliability and availability by providing redundant Fibre Channel paths from
each node of a high availability (active/active) configuration model to each loop of storage expansion
units.
Two additional SFP GBICs and two Fibre Channel cables are used to connect the last storage expansion
unit in a loop of storage expansion units to the other node of the high availability (active/active)
configuration.
6.5.1
6.5.2
PSU
A
B
PSU
0d 0c 0b 0a
0d 0c 0b 0a
IN OUT
IN OUT
IN OUT
IN OUT
IN OUT
IN OUT
IN OUT
IN OUT
PSU
PSU
PSU
PSU
PSU
PSU
PSU
PSU
Controller
Controller
Module A
Module B
Controller A/Loop 1
Controller B/Loop 1
3
4
n600015
Figure 11. Cabling Channel B paths in high-availability (active/active) configuration
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