Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!pcserver2!kdenning
From: kdenning@pcserver2.naitc.com (Karl Denninger)
Newsgroups: comp.periphs.scsi
Subject: Re: HP 97548 and 1542B problems
Summary: It is jumper settings; contact a HP distributor or dealer for 'em
Keywords: HP Adaptec
Message-ID: <1991Feb15.183717.4676@pcserver2.naitc.com>
Date: 15 Feb 91 18:37:17 GMT
References: <144713@pyramid.pyramid.com>
Organization: AC Nielsen, Bannockburn IL USA
Lines: 28

In article <144713@pyramid.pyramid.com> jeffw@pyrnova.pyramid.com (Jeff Wallace - S.E.) writes:
>I am having troubles getting a HP 97548SY (663MB) disk working on
>a Adaptec 1542B controller. I know the disk works (I have it on
>load from my office, it works fine on a vme single-ended scsi host
>adaptor).
>
>My problem: the drive fails to start up (on the Unix box during
>boot the controller starts the disk?). I'm hoping that it's just
>jumper settings.

The drive is set to spin up only on receipt of a START command....

You need to find the jumper which sets it to power up on application of
power.  The Maxtors have a setting for this, I gotta believe the HPs do as
well.

This is normally set for sequenced power up so systems can manage the surge
current on the power supply better.  It can be a significant problem if you
have lots of disks and they all come online when you turn on the switch!


--
Karl Denninger - AC Nielsen, Bannockburn IL (708) 317-3285
kdenning@nis.naitc.com

"The most dangerous command on any computer is the carriage return."
Disclaimer:  The opinions here are solely mine and may or may not reflect
  	     those of the company.