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SCSI Ports and Connections
Small Computer Systems Interface
Information
This appendix describes the Small Computer Systems Interface (SCSI). Topics
covered in this appendix include:
•
SCSI ports and connections
•
SCSI bus length
•
SCSI bus termination information
If fast SCSI devices and old-style connectors must be used in the same system,
the old-style connectors should be connected to a separate SCSI port that
doesn't contain fast SCSI devices. Do not connect fast SCSI devices and old-
style connectors in the same daisy chain.
Old-style connectors can be identified by a 3-row 50-pin D connector, a 50-pin
ribbon style connector, or a 50-pin "Centronics style" of a connector (1/2-inch
Front Load Tape (FLT) drive).
There is a microminiature SCSI port on the back panel of a DDP. The SCSI
connectors have 50 pins divided into two rows. You can connect the DDP your
system in two ways—direct connection or a daisy chain.
B
B-1
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