Re: SCSI Cable and separate Controller

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

  • Next message: Anndrei: "ncr53c400a"

    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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