Guidelines For Connecting Expansion Boxes - DEC MicroVAX 3100 Owner's Manual

The RRD40 Expansion Box
The RRD40 expansion box is a read-only storage device that reads data
from removable compact discs.
The RRD40 can be used for many purposes. For example, it can be used
for software installation and database storage.
• The tabletop version of the RRD40 is contained in a smaller expansion
box than the RZ55 and the TK50Z expansion box.
• The installation procedure for the RRD40 is the same as that for the
RZ55 expansion box and TK50Z expansion box.
• The RRD40 expansion box has external SCSI ID switches that can be
changed if necessary, depending on your configuration.
• A voltage selector switch permits the selection of the correct voltage for
your power requirements.
4.1 Guidelines for Connecting Expansion Boxes
Use the following guidelines when connecting expansion boxes:
• You can connect any combination of the three expansion boxes (RZ55,
TK50Z-GA, RRD40), as long as you do not connect more than three
expansion boxes to the system at a time.
• You must attach the 50-pin terminator that comes with your expansion
box to an unused SCSI connector on the back of an expansion box.
• All expansion boxes should be plugged into the same grounded power
strip or electrical outlet.
CAUTION: Some expansion boxes are restricted to either 110 VAC or
220 VAC operation. Check to ensure that the voltage requirement of any
expansion box used is compatible with the supply voltage. The RRD40
expansion box has a switch for power input voltage selection.
• Turn on all expansion boxes before you turn on your system unit.
This procedure ensures that the device in each expansion box is ready
for use, and that the system firmware includes the device in its
configuration.
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MicroVAX 3100 and VAXserver 3100 Owner's Manual