Re: Additional information wanted on two Apple ][ cards

[Michael J. Mahon <mjmahon@aol.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