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From: madler@piglet.caltech.edu (Mark Adler)
Newsgroups: comp.sys.next
Subject: Re: backup of hard disk
Message-ID: <1990Nov11.233642.27853@nntp-server.caltech.edu>
Date: 11 Nov 90 23:36:42 GMT
References: <13089@chaph.usc.edu> <61300044@m.cs.uiuc.edu> <6041@mace.cc.purdue.edu>
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>> Actually, they COULD have gone with Insight's new 20Mb floppy 3.5 inch
>> drive!  Yeah, the same type of floppies you use in your regular
>> drives, except a special coating I believe, AND compatible with
>> existing drives too, if memory serves.

It is a different media, but interestingly, it is the *same* media required 
by the 2.88M drives.  It uses special hexagonal crystals of barium-oxides
(if memory serves) so as to have a highly regular structure for vertical
magnetization.  And, as you mention, you can still use the media in old
drives, or new drives with old recording methods.

I'd lay fairly good odds that NeXT will go the higher density drives when
the reliability has been established.

Mark Adler
madler@piglet.caltech.edu