System information

Installing Hardware Options
3-8
MicroVAX 3100 Models 88/98 User Information
Internal SCSI Termination
The internal SCSI cable used for the MicroVAX 3100 Model 88 and Model 98 Systems is
a flat ribbon cable with integrated on-board termination. Therefore, NO storage devices
should have termination enabled.
SCSI Bus Length
The total SCSI bus length, including internal cables and etch on the motherboard as well
as the external cables between the system and the storage enclosures must not exceed 6
meters (19.6). The internal SCSI length is 1.2 meters (3.9 feet), leaving 4.8 meters (16.2
feet) for external SCSI use.
Installing Optional Storage Devices
This section tells you how to install optional hard devices into the front and rear storage
bays.
To install an optional storage device, follow this procedure:
1. Turn off your system and unplug the power cord from the wall outlet.
2. Remove the cover, as described earlier in this chapter.
Installing Devices in the Front Bay
There are four slots in the front drive bay; the top slot contains the standard 3.5-inch RZxx
hard disk drive. The next two can accommodate optional 3.5-inch or 5.25-inch devices,
while the lowest slot contains the CD-ROM drive.
_________________________ NOTE____________________________
• The two middle slots in the front drive bay can accommodate either 3.5-
inch or 5.25-inch devices. If you are installing 3.5-inch devices, there are
additional brackets which must be mounted on the device before it is
installed in the slot.
___________________________________________________________