Musings on drive form factors

shoppa_classiccmp at trailing-edge.com shoppa_classiccmp at trailing-edge.com
Mon May 9 19:54:41 CDT 2005


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.)

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.

3.5" drives - ???? No idea

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.


More information about the cctalk mailing list