Re: More VAX help needed

From: Hoff Hoffman (hoff_at_hp.nospam)
Date: 05/05/05 

Date: Thu, 05 May 2005 16:08:29 GMT

In article <3dpbekF6rifjsU1@individual.net>, bill@cs.uofs.edu (Bill Gunshannon) writes:
:...When I asked here a few days ago I got the idea that I could
:connect my storageworks cabinet to a sikngle 6640 without a star
:coupler. I have had no luck doing it with any combination of CI
:cable connections. I asked the local VMS guru and he said it won't
:work without a star coupler. Sooooo...... Can anyone confirm this?

  Your local OpenVMS guru is correct.

  In addition to the attenuation provided by the SC008 Star Coupler -- as
  was mentioned by other responders -- and assuming you do not simply fry
  something as the signal at the CI receivers will be rather hotter than
  expected; the signal definitely won't match expectations -- each CI
  controller expects to hear itself -- its echo -- as part of its normal
  CI cluster operations.

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 --------------------------- pure personal opinion ---------------------------
        Hoff (Stephen) Hoffman OpenVMS Engineering hoff[at]hp.com