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Path: utzoo!mnetor!seismo!rutgers!ames!cit-vax!mangler
From: mangler@cit-vax.Caltech.Edu (System Mangler)
Newsgroups: comp.os.vms
Subject: Re: ra81 problems
Message-ID: <2771@cit-vax.Caltech.Edu>
Date: Thu, 21-May-87 02:32:52 EDT
Article-I.D.: cit-vax.2771
Posted: Thu May 21 02:32:52 1987
Date-Received: Sat, 23-May-87 09:54:07 EDT
References: <365@vax1.ccs.cornell.edu>
Organization: California Institute of Technology
Lines: 13
Summary: glue vaporization

In article <365@vax1.ccs.cornell.edu>, george@vax1.ccs.cornell.edu (George R Boyce) writes:
> Andrew Duggan writes in the DEC Professional (via the ARIS message system)
> of May 1987, p22, that "... 68 degrees is too warm for 81s; try 60.".

There is actually some sense to this.  Supposedly the RA81's reputation
for head crashes comes from a glue that vaporizes and recondenses on
the heads and platters, gumming them up until they finally crash.  The
vapor pressure of glue (or anything else) is higher when it's warmer.
(This should have been caught at "burn in" time, I would think...)

Since the glue problem is supposedly fixed, this may no longer apply.

Don Speck   speck@vlsi.caltech.edu  {seismo,rutgers,ames}!cit-vax!speck