Installation guide

D.1 Single-System Installation of an DECarray

D.1.3 Single-System Final Veriﬁcation

Now that all the hardware installation, cabling and labeling, and the powering

up steps are complete, you are ready to conﬁgure the DSSI subsystem and

verify the correct operation of each ISE in the array with the system.

Refer to the system installation manuals and TF857 Magazine Tape ISE

Service Manual (EK–TF857–SM) for detailed information and how to proceed

with verifying the correct operation of each ISE that has been installed. In

these manuals, you will ﬁnd the procedure for establishing the communications

between the ISEs, the adapter module, and the system. You will also ﬁnd the

step-by-step procedures for reconﬁguring the system with its newly installed

DSSI devices.

Refer to the manuals for the disk ISE and tape ISE for detailed information on

the local programs in the ISEs.

Remember, each SF7x storage enclosure can contain two or four disk ISEs.

Each TF857 magazine tape ISE contains one tape ISE. A fully conﬁgured

DECarray contains up to 24 disk ISEs and/or up to 4 tape ISEs.

If at any time you detect a failure, refer to Chapter 8.

Once the veriﬁcation is complete, mount the front bezel and close the rear

door; turn the hex-Allen fasteners clockwise to lock. The system is ready to be

turned over to the system manager.

D.2 DSSI VAXcluster Installation of an DECarray

As many as two pairs of DSSI VAXcluster conﬁgured VAX 4000 systems can be

used with a single DECarray.

A single DECarray requires connection to two DSSI adapters to support each

DSSI bus. The VAX 4000 Model 300 provides two embedded DSSI adapters on

the KA670 CPU module and also supports up to two KFQSA DSSI adapters

installed in the system Q-bus backplane. The VAX 4000 Model 200 provides

one embedded DSSI adapter on the KA660 CPU module and also supports up

to two KFQSA DSSI adapters installed in the system Q-bus backplane.

In a DSSI VAXcluster conﬁguration, up to six ISEs and two adapters can be

supported on a single DSSI bus. That conﬁguration can consist of one tape ISE

and up to ﬁve disk ISEs or six disk ISEs (where one disk ISE is in the system

enclosure). For further information on DSSI VAXcluster conﬁgurations, refer

to the customer hardware information kit.

D–12 Installing a DECarray with VAX 4000 Systems