Section 2. Installing Your PlexWriter
12
PlexWriter 8/2/20 Operation Manual
Your drive ships from our factory
with its jumpers, switches, and/or dial
set to work in the most commonly
found environment. You should leave
those switches and jumpers at their
factory settings, unless: 1) you plan to
use another SCSI peripheral (e.g.,
CD-ROM, hard disk, scanner) with
your computer system in addition to
your PlexWriter; or 2) you find it
necessary to change the block size
setting (most likely in an older UNIX
system).
Do I Have to Change My
PlexWriter's SCSI ID
number?
Your PlexWriter is shipped from the
factory with its SCSI ID number set
to 4. The SCSI interface lets you
chain several SCSI peripheral devices
to a single SCSI interface board, or to
the SCSI port of an Apple computer
with no loss of performance.
However, each peripheral must have a unique SCSI ID number—your PlexWriter
can have any of 8 numbers (0-7). SCSI ID 7 is typically reserved by the SCSI
interface board.
NOTE:
The cable length of all SCSI chain cables should not exceed 1.5 meters.
You probably
don't
need to physically set the SCSI ID if:
•
Your PlexWriter drive is the only SCSI peripheral
: In this case, don't change
the SCSI ID. Leave it set to the original factory setting of 4.
•
You have a PlexWriter Drive with PCI SCSI Kit
: If you bought a Plextor kit
with a SCSI interface board, both the drive and the board are SCAM-compliant.
This means each time you turn on your computer, the SCSI interface board will
detect whether there is SCSI ID conflict between multiple devices. Because your
PlexWriter also supports SCAM, the drive automatically resets its SCSI ID
internally to avoid any conflict with other devices. (This overrides any hardware
settings.) So you don't have to worry about setting SCSI ID numbers.
•
You have a SCAM-compliant SCSI board:
Your Plextor drive is also SCAM-
compliant, so if you have Windows 95 or 98, you don't have to worry about
setting SCSI ID numbers.
Quickstart Installation
(Continued)
Scenario 3
: You have a SCSI board that
is not Plug and Play/SCAM-capable,
and you have Windows 95 or 98.
What to do
: Set a unique SCSI ID
number for the PlexWriter, and make
sure all other peripherals have their own
SCSI numbers. Set the termination of
each peripheral OFF; except set the
termination of the last peripheral
devices on each side of the chain to ON.
Other scenarios, or if you have
problems
: Better take a closer look at
this chapter and at “Appendix B:
Installing in Windows.”
