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Chapter 3. Cabling the storage subsystem
After the storage subsystem is installed in its permanent location, you must cable it
to hosts, drives, and other external devices, depending on your hardware
configuration.
This chapter addresses the following cabling and configuration topics:
v “Working with SFPs and fiber-optic cables”
v “Connecting storage expansion enclosures to the DS4500” on page 61
v “Connecting secondary interface cables” on page 103
v “Configuring the storage subsystem” on page 104
v “Installing the storage subsystem configuration” on page 111
v “Cabling the power supply” on page 111
Working with SFPs and fiber-optic cables
When fully configured, the back of the DS4500 Storage Subsystem can
accommodate up to four host-side and four drive-side mini hubs. Each mini hub is a
single, removable unit that provides the Fibre Channel interface between a DS4500
Storage Subsystem, host computers, and drives. Each mini hub has two small
form-factor pluggable (SFP) module ports. An SFP module is inserted into a
mini-hub port; then, a fiber-optic cable is inserted into the SFP module. Figure 29
shows the Fibre Channel components and connections.
Mini hub
Host mini hub
ports
SFP module
SFP module
Fiber-optic
interface cable
Drive mini hub
ports
GS000040
The DS4500 Storage Subsystem uses fiber-optic cables to connect to other Fibre
Channel devices. The fiber-optic cables that you need depend on the type of optical
connectors in the device to which you are connecting the DS4500 Storage
Subsystem. If the device uses SFP modules or optical interface connectors, then
Figure 29. Fibre Channel interface connections
© Copyright IBM Corp. 2006 47