Chapter 3. Cabling The Storage Subsystem; Working With Sfps And Fiber-Optic Cables - IBM DS4800 User, Installation And Maintenance Manual

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 provides fibre channel and power cabling information for
the storage subsystem. It also provides information about configuring the storage
subsystem.
This chapter addresses the following cabling and configuration topics:
v "Working with SFPs and fiber-optic cables"
v "Connecting storage expansion enclosures to the DS4800" on page 59
v "Connecting hosts to the DS4800" on page 79
v "Connecting secondary interface cables" on page 81
v "Configuring the storage subsystem" on page 82
v "Installing the storage subsystem configuration" on page 88
v "Connecting the power cables" on page 88

Working with SFPs and fiber-optic cables

Each RAID controller has four single-ported host channel connections and two
dual-ported drive channel connections. You use a small-form factor pluggable
transceiver (SFP) to connect each host channel port and drive channel port to hosts
and storage expansion enclosures. The SFP is inserted into the port, and then a
fiber-optic cable is inserted into the SFP. The other end of the fiber-optic cable
connects to an external device. SFPs are laser products.
Statement 3
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could result in
v Use of controls or adjustments or performance of procedures other than those
© Copyright IBM Corp. 2006
exposure to hazardous laser radiation. There are no serviceable parts inside the
device.
specified herein might result in hazardous radiation exposure.
Danger
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the
following.
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
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