Installation guide

Converting a Single-System Conﬁguration to a DSSI VAXcluster Conﬁguration

C.2 Conversion Procedure

CAUTION

Do not disturb any existing DSSI cables unless otherwise instructed.

Do not remove any existing 42-inch DSSI cables (BC21Q–3F) between

magazine tape ISEs and SF7x storage enclosures.

Install the 70-inch DSSI cables (BC21R–5L) where necessary to complete the

bus connections to the DECarray I/O panel:

1. Connect one end of the 70-inch DSSI cable to the DSSI connector on the

rear of the SF7x storage enclosure or magazine tape ISE.

2. Install the other end to the appropriate port on the DECarray I/O panel.

Refer to Figure C–5.

Connect the appropriate number of 108-inch DSSI cables (BC21Q–09) to all the

newly installed 70-inch DSSI cables on the DECarray I/O panel.

Next, connect the other end of the 108-inch DSSI cables to the appropriate

DSSI connector on the system I/O panel.

Note

If you have not changed the KFMSA module DSSI ID numbers in

the other host system to 6, do so at this time. Do NOT attempt to

connect the 108-inch DSSI cables to this host system until the DSSI ID

numbers have been changed. Refer to the KFMSA Module Installation

and User Manual.

Refer to Appendix A for cabling diagrams of the single-system and DSSI

VAXcluster conﬁgurations.

Converting a Single-System Conﬁguration to a DSSI VAXcluster Conﬁguration C–11