IBM DS3500, Installation, User'S, And Maintenance Manual

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3.
Repeat steps 1 on page 3-34 and 2 on page 3-34 for an additional redundant host connection. In a
direct connection configuration, you can create a maximum of two redundant host connections for the
storage subsystem.
See “Direct-attached single-controller connections” and “Direct-attached dual-controller connections” on
page 3-36 for illustrations of host connections.
For examples of redundant, partially-redundant, and non-redundant host and drive loop configurations,
see “Fibre Channel host loop configurations” on page 3-38.
Direct-attached single-controller connections:
The following illustration shows a direct-attached connection to a single host HBA.
The following illustration shows a direct-attached connection to dual HBAs in a single host (redundant
host connection).
Serial port
Ethernet ports
SAS host port 1
SAS host port 2
Fibre channel host port 3
Controller A
Fibre channel host port 4
Fibre channel host port 5
Fibre channel host port 6
Drive expansion port
Seven-segment
numeric display
Controller B
Figure 3-40. Location of host connectors on storage controllers
Host system
with single host
adapter
DS3500
Figure 3-41. Single-controller direct-attached Fibre Channel connection to a single host HBA
Chapter 3. Cabling the storage subsystem and storage enclosure
3-35