*BSD News Article 96289


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From: Chris Mauritz <ritz@interactive.spamthat.net>
Subject: Re: Virtual file systems (striping) on BSDI 3.0x86?
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Organization: IBS Interactive, Inc.
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References: <Pine.LNX.3.96.970526212551.4551A-100000@rage.hostile.net>
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Date: Tue, 27 May 1997 10:43:08 GMT
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.bsdi.misc:6916

Casper <casper@rage.hostile.net> wrote:
:P~On Mon, 26 May 1997, Chris Torek wrote:

:P~> >Terry Kennedy <terry@spcuna.spc.edu> wrote:
:P~> >>  It's the physical drive failing. You don't say anything about what brand/
:P~> >>model your drive(s) are, or what enclosures you're using, so it's a bit hard
:P~> >>to give good advice.
:P~> 
:P~> In article <5mcop0$5vq$1@news.thecia.net> you write:
:P~> >Here is the dmesg info on my drives ...
:P~> >sd0 at tg0 unit 0: disk: SEAGATE ST15230N rev 0298 (SCSI-2) 8386733*512
:P~> >All of the drives are inside the computer.
:P~> 
:P~> Terry Kennedy knows way more than I do about drives, but these
:P~> sound like Barracudas or similar.  Many of the fast Seagate drives
:P~> are extremely heat-sensitive and need big cooling fans aimed directly
:P~> at them, or at least a lot of airflow over them.  If your case happens
:P~> to have a `dead' spot in its airflow, and sd0 is in that dead spot,
:P~> that would explain why sd0 keeps failing.

:P~The machine is in a tempature controled room, I can't remeber what the
:P~temp is in the room. I don't have a case on the machine since there
:P~are so many drives in it. 

Heh.  Taking the case off is probably making things worse.  I can almost
guarantee you that you'll have a drive failure if you leave them all
stuffed in a pc case.

:P~There could be an airflow problem, but the sd0 drive is not too hot, when
:P~I touch it. sd4 is extermly hot to the touch. 

The cost of a quality external enclosure is pretty trivial compared
to losing one or more Barracudas (there's downtime and Seagate may
not replace them if they've failed due to obvious abuse).

:P~They are stacked in this order

:P~sd4
:P~sd3
:P~sd2
:P~sd1
:P~sd0

:P~And yes there is space between the drives :) although its not much space.

That won't cut it.

:P~I am going to get a fan to blow some air between the drives to see if this
:P~will solve the problem. 

Doubtful.  You've got a bunch of other problems as well.  See Terry's
message for helpful troubleshooting info.

Chris

-- 
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