Scsi Id Number - Plextor PX-R820Te Operation Manual

CHAPTER 6 — Drive Switch/Jumper/Dial Settings

SCSI ID Number

It is possible to chain (using a daisy chain cable) SCSI peripherals to a single
SCSI interface board, or to the SCSI port of an Apple computer — up to seven
devices with the PlexWriter 8/20. Daisy chaining a few drives together should be
possible with no loss of performance. When using multiple SCSI peripherals,
however, it is necessary to set each peripheral to a unique SCSI ID number.
NOTE: To guarantee specified performance, cable length of all daisy chain
cables and cabling in external case should not exceed 1.5 meters. It is
physically impossible to daisy chain 15 external drives with total cable
length under 1.5 meters.
If you bought a Plextor kit with a SCSI interface board, both the drive and the
board are SCAM compliant, which means each time you turn on your
computer, the drive will internally reset its SCSI ID to avoid any conflict. If you
separately purchased or already own a SCSI interface board, it may not be
SCAM compliant.
For those of you without SCAM adapters, your Plextor CD-R drive can be set
to use one of eight SCSI ID numbers. The drive should arrive with its SCSI ID
set to 4. Accordingly, if you already use another SCSI peripheral, and its SCSI
ID is also set to 4, you must change the SCSI ID number of either this
peripheral or the CD-R drive. In the past, this always had to be done manual-
ly. If you connect your PlexWriter to an existing SCSI controller, you will still
need to go through this exercise of checking and possibly changing SCSI IDs.
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PX-R820T OPERATION MANUAL