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INTRODUCTION
-- Onboard output jack on internal models for configuring the SCSI address if repackaged in an
external box
-- Compatibility with the Archive SCSI Viper quarter-inch cartridge drives
o
Onboard serial port for internal diagnostics (internal models only---4322 and 4542)
o
Automatic power-on self tests (switch option on internal models)
o
Manual emergency cassette ejection procedure
1.4 Typical System Configurations
The SCSI standard supports up to eight SCSI addresses or IDs. These IDs refer to host adapters or peripheral
devices such as printers, magnetic disks, or tape drives. The eight devices or hosts are daisy chained together.
Figure 1-4 shows sample configurations of SCSI systems.
COMPUTER
HOST
~
SCSI BUS
.....
PYTHON
SYSTEM
ADAPTER
~
~
DRIVE
SINGLE INITIATOR -SINGLE TARGET
COMPUTER
HOST
~
SCSI BUS
.....
PYTHON
SYSTEM
ADAPTER
~
JIll""
DRIVE
SINGLE INITIATOR -SINGLE TARGET
MAGNETlC
.....
DISK,
JIll""
PRINTER,or
OPTlCAL
DISKS
COMPUTER
HOST
...... SCSI BUS
......
PYTHON
SYSTEM
ADAPTER
......
~
DRIVE
MAGNETlC
.......
DISK,
.....
PRINTER,or
OPTICAL
DISKS
MAGNETlC
.....
DISK,
-".
PRINTER, or
OPTICAL
DISKS
MAGNETIC
COMPUTER
HOST
~
.....
DISK,
PRINTER,or
SYSTEM
ADAPTER
~
."",..
OPTICAL
DISKS
SINGLE INITIATOR -SINGLE TARGET
Figure 1-4
SCSI System Sample Configurations
1-7
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