# Re: SCSI Cable and separate Controller

From: Wolfgang Goeller (wgoeller@active.ch)
Date: Mon Feb 14 2000 - 06:51:17 PST

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  Andrew McHorney wrote:
  >
  > Well I can get a simple 4 to 6 scsi foot cable for now. When I get my
  > computer desk setup, the scanner will be located much closer and then I can
  > use a 3 foot cable.
  >
  > The scanner came with an adaptec controller which is ok, but I would rather
  > not waste a slot.

  Just think of some facts:

  - As long as the scanner transfers (slowly) data,
  the scsi-bus might be occupied for other activities
  That might be OK, as long as only chunks of data are
  transfered. But:
  - Some scanners block the SCSI-Bus totally, as long as
  they are busy - and that will slow down you machine
  in a way you might not want.
  - Most Scanners are poorly terminated. At the best
  it's a reasonable passive termination. That's not
  adaequate for high-speed SCSI-Controllers.

  Therefor it's save and a good idea to have a separate
  controller for all this slow devices.

  Regards
  Wolfgang

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