Daisy-Chaining Multiple Expansion Boxes - DEC VAXstation 3100 Owner's Manual

4.6 Daisy-Chaining Multiple Expansion Boxes
You can add additional expansion boxes and daie^-chain the
second box to the first. To daisy-chain (hnk expansion boxes
together in series), follow these steps:
Go
1 Turn the system unit and all expansion boxes off (0).
Note See your software documentation for shutdown procedures
before turning your system off. Also, you should not turn
off, halt, or restart Ihe system without notifying work group
members.
2 Remove the 50-pin terminator on the most recently installed
expansion box. Store the terminator for future use.
Note Ifyou have more than one of the same device attached to your
system, you must change the SCSI ID on the second device
to an open ID number on the SCSI bus. See Appendix B for
additional information.
You can daisy-chain devices to your system in any physical
order.
3 Connect one end of the 50-pin to 50-pin connector cable to the
new expansion box.
4 Connect the other end of the connector cable to an available
port on the most recently installed expansion box.
5 Attach the 50-pin terminator that you just removed £rom
the first expansion box to the unused SCSI port on the new
expansion box.
6 Connect the power cord for the new expansion box to the
expansion box power receptacle. Plug the other end into the
same power source as the fiirst expansion box. Each expansion
box needs its own power connection.
4^-12 Adding and Using Expansion Boxes