Why are external HDD enclosures advertised as 3.5"
Michael L Torrie
torriem at chem.byu.edu
Tue Feb 6 11:30:25 MST 2007
On Tue, 2007-02-06 at 11:10 -0700, Doran Barton wrote:
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> Brian Hawkins wrote:
> > No, I'm referring to the distance between the bottom screws on the left
> > side to the bottom screws on the right side.
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> > | FRONT |
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> > ^ ^
> It would probably help if you used an e-mail client that didn't use a
> proportional font. :)
The disk is traditionally called a 3.5" disk because the platters were
3.5" in diameter, the same size as the disk inside a 3.5" floppy. And
actually it's not really 3.5" as the platters and floppies are measured
in centimeters. I believe the platters on modern drives are still
pretty close to the 3.5" diameter.
Anyway, this thread is pretty silly. All we need to really know is that
the 3.5" drives are standard desktop drives and 2.5" are laptop drives,
actual dimensions and platter diameters notwithstanding.
> - --
> Doran L. Barton <fozz at iodynamics.com>
> http://www.iodynamics.com/ - IT and Web services, open source specialists
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