Chapter 2. Connecting An Exn1000 Expansion Unit; Handling Fiber-Optic Cables - IBM EXN1000 Hardware And Service Manual

Chapter 2. Connecting an EXN1000 expansion unit

This chapter describes how to connect a single EXN1000 expansion unit or a
loop of EXN1000 expansion units to a supported N series storage system or to
other expansion units. This chapter also describes how to ground your system
and how to connect your system to power.
This chapter discusses the following topics:
v "Handling fiber-optic cables"
v "Connecting EXN1000 expansion units" on page 14
v "Grounding EXN1000 expansion units" on page 15
v "Connecting the EXN1000 expansion unit to a power source" on page 15
v "Hot-adding an EXN1000 expansion unit to an existing loop" on page 15

Handling fiber-optic cables

Before you use fiber-optic cables, read the following precautions.
Attention: To avoid damage to the fiber-optic cables, follow these guidelines:
v Do not route the cable along a folding cable-management arm.
v When attaching to a device on slide rails, leave enough slack in the cable so
that it does not bend to a radius of less than 38 mm (1.5 in.) when extended
or become pinched when retracted.
v Route the cable away from places where it can be snagged by other devices
in the rack cabinet.
v Do not overtighten the cable straps or bend the cables to a radius of less
than 38 mm (1.5 in.).
v Do not put excess weight on the cable at the connection point. Be sure that
the cable is well supported.
© Copyright IBM Corp. 2005, 2007
CAUTION:
Data processing environments can contain equipment transmitting on
system links with laser modules that operate at greater than Class 1
power levels. For this reason, never look into the end of an optical
fiber cable or open receptacle. (C027)
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