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4-1
Chapter 4
Setting Up and Installing
a SCSI Bus
This chapter describes how to plan and configure a Small Computer System Interface
(SCSI) bus for AViiON 530 and 4600 series systems. It includes default and
recommended SCSI identification numbers, operating parameters for the individual
mass-storage drives on the bus, terminating rules, cabling restrictions that apply to
your system, and worksheets to help you prepare your SCSI configuration. This
chapter also provides instructions for connecting SCSI devices and subsystems to your
computer unit.
NOTE: Factory-set SCSI IDs for the internal drives in your system are listed on a
label attached to your computer unit's rear panel, above the SCSI
connector(s). In most cases, the IDs for factory-installed subsystem devices
are listed on a label attached to your PHU or CSS2/DC. Table 4-1 lists the
default identification settings and DG/UX device names for AViiON 530 and
4600 series SCSI devices; components purchased together as a system are
factory-preconfigured to these defaults.
If your system includes
external
devices (drives or subsystems housed outside the
computer unit), you will need the information in the Connecting an External SCSI
Bus to the Computer Unit Rear Panel" section of this chapter to connect those devices
to your computer unit. To ensure that your system components work together, you
should also fill out the worksheets and make certain that your SCSI bus adheres to the
device identification and cable rules described in this chapter.
Before
adding any new
internal or external SCSI devices to your system, you should read this chapter to plan
your SCSI bus configuration.
NOTE: If your system does
not
include any external SCSI mass-storage subsystems
or stand-alone SCSI devices (such as reel-to-reel tape drives), you
probably do not need the information in this chapter unless you plan to add
more drives. However, you do need to terminate the SCSI bus at the
computer unit, as described in Chapter 2.
Planning a SCSI Bus Configuration
You should carefully plan your entire SCSI bus configuration
before
you begin setting
up the devices. As you set up your SCSI devices, make sure that your system adheres
to the following SCSI device identification, bus cable, and bus termination rules. Use
the worksheets in Figure 4Ć4 along with the information in the following sections to
plan and/or verify your configuration.
Summary of Contents for AViiON 4600 Series
Page 1: ... Customer Documentation P R O D U C T L I N E ...
Page 2: ......
Page 6: ......
Page 14: ...Preface xii 014 002091 ...
Page 24: ...Contents xxii 014 002091 ...
Page 58: ...Setting Up Your Computer System 2 18 014 002091 ...
Page 84: ...Setting Up and Installing a SCSI Bus 4 16 014 002091 ...
Page 122: ...Expanding and Maintaining Your Computer System 6 18 014 002091 ...
Page 148: ...Adding or Replacing Memory Modules 8 8 014 002091 ...
Page 182: ...Replacing the System Board 10 12 014 002091 ...
Page 188: ...Replacing the Fan Assembly 11 6 014 002091 ...
Page 236: ...Using the System Control Monitor B 22 014 002091 ...
Page 248: ...Solving Power Up Problems C 12 014 002091 ...
Page 260: ...Index 12 014 002091 ...
Page 262: ......
Page 266: ...Appendix Title 093 xxxxxx 2 Licensed Material Property of Data General Corporation ...