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Date:      Mon, 08 Sep 1997 17:11:44 +1000
From:      Mike Smith <mike@smith.net.au>
To:        Greg Lehey <grog@lemis.com>
Cc:        Mike Smith <mike@smith.net.au>, hcremean@vt.edu, chat@FreeBSD.ORG
Subject:   Re: lousy disk perf. under cpu load (was IDE vs SCSI) 
Message-ID:  <199709080711.RAA01934@word.smith.net.au>
In-Reply-To: Your message of "Mon, 08 Sep 1997 17:06:37 %2B0930." <19970908170637.25473@lemis.com> 

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> > I was talking pre-1980 stuff; you would have to find a real fossil to
> > tell you what they were using before that. 8)
> 
> Thanks.  The 2311 used hydraulics.  Didn't I offer you the manual?
> Anyway, it's somewhere in the shed.  70ms average positioning IIRC.
> 
> The typical start to a bad day was to come in and find a pool of oil
> under one of your disk drives.

What did they drive the hydraulics with, though?  A constant pressure 
compressor and what sort of solenoids?

mike





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