Installation guide

D.2 DSSI VAXcluster Installation of an DECarray
2. Connect the 108–inch DSSI cable or cables (part number BC22Q–09) from
the array DSSI I/O panel to the appropriate system DSSI connector.
a. At the system DSSI connector, remove the terminator or terminators
(part number 12–29258–01). See Figure D–8. Store these terminators
in the ESD pouch on the rear door of the storage array cabinet.
b. The system DSSI connectors are (see Figure D–8):
• DSSI Bus 0 (embedded adapter, also connects to internal TF and
RF ISEs)
• DSSI Bus 1, Model 300 only (embedded adapter, TF and RF ISEs)
• KFQSA 1 (first installed adapter in the Q-bus backplane, RF ISEs
only)
• KFQSA 2 (second installed adapter in the Q-bus backplane, RF
ISEs only)
Connect DSSI bus 0 of either DSSI VAXcluster system through the
DECarray and then to DSSI bus 1 on the other DSSI VAXcluster system.
This allows for the maximum number of embedded ISEs in a DSSI
VAXcluster configuration.
3. Connect the ground strap (provided with the cable kit). Attach one end
of the strap according to the instructions found in the System Expansion
Installation Supplement (part number EK-431AB-IN). Connect the other
end to one of the screws securing the power controller to the storage array.
D.2.2.1 Example of a Fully Configured DSSI VAXcluster System
The following section shows a fully configured DSSI VAXcluster system
consisting of a DECarray with 16 disk ISEs and two TF857 magazine tape
ISEs connected to two VAX 4000 (each with one RF disk ISE).
DSSI Bus 0 from the VAX 4000 Model 300 can have tape and disk ISEs on it
that are internally mounted in the system enclosure. Also DSSI Bus 0 and 1
(the embedded DSSI buses) are the ONLY two DSSI buses from the system
that can support the DSSI tape ISEs.
Use Table D–4 for configuring DSSI bus 0 on either system to DSSI bus 1 of
the other DSSI VAXcluster system.
Installing a DECarray with VAX 4000 Systems D–17