Installation guide

Installing the SF3x Storage Enclosure in a DECarray Cabinet

5.5 Cabling the SF3x in the DECarray Cabinet

5.5.1 Through-Bus Conﬁguration

Use the following procedures for cabling an SF3x storage enclosure in

a DECarray cabinet conﬁgured for single-system or DSSI VAXcluster

conﬁgurations in through-bus mode.

The following procedures assume that all devices installed previous to a new

installation of an SF3x storage enclosure are cabled in the single-system

conﬁguration.

5.5.1.1 Identifying DSSI Connectors on the System I/O Panel

The following procedure explains how to locate and identify the DSSI

connections on the host system I/O panel.

Note

Before performing the following steps, refer to the system documenta-

tion for the correct procedure to perform an orderly shutdown of the

systems that the DECarray is connected to.

Note

This procedure assumes that no SF3x storage enclosures are installed

internally in the system cabinet. If SF3x storage enclosures are in the

system cabinet, then one of the KFMSA modules in the system XMI

backplane must be connected to those SF3x storage enclosures. Do

NOT use this KFMSA module or its DSSI connections to connect the

system to the DECarray. Do NOT count this KFMSA module in the

following steps.

1. Open the system I/O panel on the system by removing the screws that

secure the I/O panel to the system chassis. Let the panel swing down to its

rest position.

2. Find the ﬁrst KFMSA module installed in the XMI backplane of the

system. It will be the KFMSA module in the lowest numbered slot of the

XMI backplane.

3. Follow the cabling from the backplane to the system I/O panel.

4. While viewing the front of the I/O panel, note that the DSSI connector

on the left is KFMSA DSSI bus 2 and the DSSI connector on the right is

KFMSA DSSI bus 1. These connectors should be labeled BLUE for bus 1

and RED for bus 2.

Installing the SF3x Storage Enclosure in a DECarray Cabinet 5–31