Musings on drive form factors

[Randy McLaughlin]

From: <shoppa_classiccmp at trailing-edge.com>
Sent: Monday, May 09, 2005 7:54 PM
> 14" drives - full rack width, with room for some casting on either side.
>
> 8" drives - two side-by-side in a rack width.  (Perfect fit, in fact.)

8" drives - 8.55"W x 4.50H full height, 8.55"W x 2.28"H half height.

> 5.25" drives - probably completely unconstrained by rack widths.  I
>   think a recent document on bitsavers details the IBM DemiDiskette,
>   which was something like 4" :-).
>
>   Height of a FH 5.25" drive is the same as an 8" drive.

5.25" drives - 5.75"W x 3.25"H for full height, 5.75"W x 1.63"H for 
half-height.

> 3.5" drives - ???? No idea

3.5" drives - 4"W x 1"H

> There was a joke in BYTE in the early 80's about diskette manufacturers
> keeping the punched out "holes" from each size of floppy for use
> as future floppy sizes :-).
>
> Tim.

Randy
www.s100-manuals.com