Installation guide

Installing a DECarray with a VAX 4000 System

D.1 Single-System Installation of a DECarray

Note

A single-system DSSI bus can only be connected from a VAX 4000

system to a single DECarray and then terminate in that DECarray. No

additional expanders can be connected to that DSSI bus.

For a VAX 4000 Model 200, DSSI bus 0 connect to ports 1 on the DECarray.

The ﬁrst KFQSA adapter connects to port 2 and the second KFQSA adapter

connects to port 3.

For a VAX 4000 Model 300, DSSI bus 0 and 1 connect to ports 1 and 2 on the

DECarray. The ﬁrst KFQSA adapter connects to port 3 and the second KFQSA

adapter connects to port 4.

This section describes the procedures for installing the DECarray in a

single-system conﬁguration correctly and safely. Digital Services or trained

installation personnel must perform the procedures.

Ensure that all precautions for site preparation have been completed.

The following procedures describe how to:

• Inspect the DECarray for proper conﬁguration (Section D.1.1)

• Cable the DECarray with an existing VAX 4000 system in the single-

system conﬁguration (Section D.1.2)

• Check the DECarray for correct operation (Section D.1.3)

D–4 Installing a DECarray with a VAX 4000 System