Re: Additional information wanted on two Apple ][ cards

["Michael J. Mahon" <mjmahon@aol.com>]

Apple2Steward wrote:
> "Michael J. Mahon" <mjmahon@aol.com> wrote in message 
> 1238610892356551973.946075mjmahon-aol.com@news.giganews.com">news:1238610892356551973.946075mjmahon-aol.com@news.giganews.com...
>
> > Kevin Dady <kevin@hackaday.com> wrote:
> >
> > > > er i mean 1.2mb no 1.2gb (i'd like to find a 1981 device that 
> > > > did that?
> > >
> > > look at 12 inch hard disks, they done it
> >
> > In 1981, the only head-disk assembly (what we now call a drive) 
> > with more
> > than 1GB of capacity was in the IBM 3380.  It contained two 
> > HDAs, each with
> > a 1.2GB capacity and it weighed over two tons!
> >
> > I don't recall the platter size, but each HDA had eight 
> > platters. I'd guess
> > they were 16" to 18" in diameter.
> >
> > -michael - NadaNet 3.1 and AppleCrate II: 
> > http://home.comcast.net/~mjmahon
>
>
>
> 14"
>
> http://130.203.133.150/viewdoc/download?doi=10.1.1.50.5494&rep=rep1&type=pdf
>
> See Table 2 

Nice find!  The IBM publications I checked didn't have that.

-michael

NadaNet 3.1 for Apple II parallel computing!
Home page:  http://home.comcast.net/~mjmahon/

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