*BSD News Article 35652


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From: witr@rwwa.com (Robert Withrow)
Newsgroups: comp.os.386bsd.questions
Subject: [Solved] Disapearing Disks?
Date: 1 Sep 1994 12:55:40 GMT
Organization: North Shore Access, a service of Eco Software, Inc.
Lines: 25
Distribution: world
Message-ID: <344j0c$m39@shore.shore.net>
References: <341uf9$d4@shore.shore.net> <CvFBMt.4LE@dtr.com> <MICHAELV.94Sep1011951@MindBender.HeadCandy.com>
Reply-To: witr@rwwa.com
NNTP-Posting-Host: rwwa.com

Well, it finally happend while I was using the system, and it became
obvious what was going on.  It has been a very humid summer here,
and I guess a layer of oxide has slowly grown on the connector
of the cheap power-line splitter I was using to feed the two
drives that were acting up.  Anyway, I was typing away and the
two drives started turning on and off erratically.  Disconnecting
and re-connecting the power splitter connector, and the problem hasn't
happend for 48 almost 48 hours now.

Also, In article <MICHAELV.94Sep1011951@MindBender.HeadCandy.com>,
michaelv@MindBender.HeadCandy.com (Michael L. VanLoon) writes:

|> Ummm... I believe you have terminating power on about two too many
|> devices.  You should have only *two* devices terminated: both of the
|> extreme ends of the SCSI chain; *nothing* in the middle of the chain
|> should be terminated. 

Ummm, I said terminator *power*, and not *terminators*.  If you examine
the doco on your scsi peripherals, you will notice that most of them
have a jumper that connects juice to the terminator-power-line.  Per
spec, not more than 5 of the devices on the bus should be supplying it.

-- 
 Robert Withrow, Tel: +1 617 598 4480, Fax: +1 617 598 4430
 R.W. Withrow Associates, 319 Lynnway, Lynn MA 01901 USA, Net: witr@rwwa.COM