Date: Mon, 8 Sep 1997 17:19:12 +0930 From: Greg Lehey <grog@lemis.com> To: Mike Smith <mike@smith.net.au> Cc: hcremean@vt.edu, chat@FreeBSD.ORG Subject: Re: lousy disk perf. under cpu load (was IDE vs SCSI) Message-ID: <19970908171912.16593@lemis.com> In-Reply-To: <199709080711.RAA01934@word.smith.net.au>; from Mike Smith on Mon, Sep 08, 1997 at 05:11:44PM %2B1000 References: <19970908170637.25473@lemis.com> <199709080711.RAA01934@word.smith.net.au>
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On Mon, Sep 08, 1997 at 05:11:44PM +1000, Mike Smith wrote: >>> 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? RTFM. I've never taken one apart. Greg
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