Seagate ST3390N Guia de Instalação descarregar pdf (Página 96)

100

101

8-8 Configuring the backplane and inspecting the printed circuit packs

Shroud terminators and jumpers

Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999

Shroud terminators and jumpers

Introduction

The system ships with the shroud terminators and jumpers

needed for the configuration as selected by the customer.

However, verify the terminator and jumper locations as

described below. Terminator and jumper locations are shown in

“Location of backplane switches, shrouds, and terminators” on

page 8-4.

S4 and S5 address

shroud jumper

Locate the address shroud jumper at the upper part of the

bottom of slots S4 and S5. See “Location of backplane

switches, shrouds, and terminators” on page 8-4. Locator lines

to the left of shroud S5 and the right of shroud S4 mark its

location.

Note: The shroud jumper looks like a circuit board.

In essence, the address shroud jumper is present in all shadowed

and unshadowed systems, except those unshadowed

configurations where MM0 has three nodes. For example, a

4-node unshadowed system only has the address shroud jumper

in MM1 because MM0 contains three nodes; a four-node

CAUTION

Risk of equipment damage

You must install the address shroud jumper

and the EVB terminator very carefully to

avoid damage to the backplane pins.

IF the system has AND is

THEN the address

shroud

1 or 2 nodes unshadowed is present in MM0.

3 nodes is not present in MM0.

4 or 5 nodes is present in MM1.

1 or 2 nodes shadowed is present in MM0.

3 or 4 nodes is present in MM0 and

MM1.

5 nodes is present in MM0,

MM1, and MM2.

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