Date: Mon, 8 Sep 1997 16:48:52 +0930 From: Greg Lehey <grog@lemis.com> To: Mike Smith <mike@smith.net.au> Cc: hcremean@vt.edu, Simon Shapiro <Shimon@i-connect.net>, chat@FreeBSD.ORG Subject: Re: lousy disk perf. under cpu load (was IDE vs SCSI) Message-ID: <19970908164852.40911@lemis.com> In-Reply-To: <199709080546.PAA01604@word.smith.net.au>; from Mike Smith on Mon, Sep 08, 1997 at 03:46:35PM %2B1000 References: <19970908013227.32344@wakky.dyn.ml.org> <199709080546.PAA01604@word.smith.net.au>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, Sep 08, 1997 at 03:46:35PM +1000, Mike Smith wrote: >> >> PS: When did the first voice-coil-seek hard drives come out? This is a >> question that's been bugging me for some time now... > > Linear or rotary actuator? I'd always equated "voice coil" with linear actuators. I'd guess the early 70s. We installed the first UNIVAC 8440s in 1973. I think they were voice coil. They looked like 3330 copies. > The linear VC actuator probably predates the use of stepper motors; I'd think so. The stepper motors wouldn't have got into hard drives until about the ST-506. Greg
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19970908164852.40911>