Date: Fri, 12 Apr 96 08:20:02 PST From: "Brett Glass" <Brett_Glass@ccgate.infoworld.com> To: Michael Smith <msmith@atrad.adelaide.edu.au>, jacs@gnome.co.uk Cc: hardware@FreeBSD.ORG Subject: Re: Micropolis 1991 AV 9GB Drive Message-ID: <9603128293.AA829326577@ccgate.infoworld.com>
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> Bear in mind that both these units are _slow_, Average access times are supposed to be 11 ms. The fastest commonly available drives are 8 ms, and the latest PC IDE drives sit at 12 ms or so. Also, the 9 GB drives have huge amounts of data per cylinder and fast spindle speeds. Why would they be slow? > and require specialised cooling to avoid thermal overload and premature > death, I've never cooled one of these in any special way. Most dissipate less power than the 40 MB Seagates I was using 10 years ago. What experiences have you had to indicate that they need better cooling? > as well as a _serious_ power supply. A normal PC chassis is > _totally_ inappropriate for these disks. I am now working on a review of several such disks, packaged in external SCSI boxes for the Macintosh. None had anywhere near as big a power supply as your typical tower case (250-300W). If you've had speed problems with these drives, or have had them overheat, I'd like to know about it -- it'd be worth trying to verify this information. --Brett
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