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Path: utzoo!mnetor!seismo!ut-sally!husc6!cmcl2!philabs!sbcs!nclee
From: nclee@sbcs.UUCP (Nai Chi Lee)
Newsgroups: comp.sys.ibm.pc,comp.sys.misc
Subject: Re: Need info about ST-238 disk, 2070 controller problem
Message-ID: <435@sbcs.UUCP>
Date: Tue, 19-May-87 15:46:56 EDT
Article-I.D.: sbcs.435
Posted: Tue May 19 15:46:56 1987
Date-Received: Sat, 23-May-87 06:07:44 EDT
References: <3155@ecsvax.UUCP> <417@dasys1.UUCP>
Distribution: na
Organization: Computer Science Dept, SUNY@Stony Brook
Lines: 26
Xref: mnetor comp.sys.ibm.pc:4224 comp.sys.misc:597

> > 	I keep running across references to a mysterious problem involving
> > Seagate ST-238 hard disks coupled with Adaptek 2070 RLL controllers.  A May
> > 11th Infoworld story spoke of a "25 percent failure rate..."
> > ...
> I have had the same configuration on my clone since January, and while I have
> not experienced any boot problems, I have found that I must let my system
> "warm up" for 10 minutes or so before doing any serious disk I/O.  If I don't
> ...
> William Phillips

I also have the same configuration, and the same problem happened to me.
After about one month of light usage, the drive started giving out error
messages such as "CRC error" or "Sector not found" at power up, but then
it worked fine after 10 minutes or so.  I suspected that the problem was due
to slight mis-alignment of disk heads, worsen by temperature variation.
I did a low level format and the problem disappeared for a while, but came
back after a few weeks.  Finally, three month ago, I exchanged the whole
drive/controller for another same unit.  The new unit is still running well
so far.  (touch wood :-)

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"It is difficult to make something foolproof because fools are so ingenious."
[Anon]