While scan time goes up linearly with drive size (but comes back down with
enhancements in drive speed), a significant part of defrag time is time
spent writing a copy of data to a different drive location.  This is
minimized if the program can work out how to write the data once only, to
its final defragged location.
  As a drive gets full, it becomes harder and harder and ultimately
impossible to do that -- it becomes necessary to write data blocks to
temporary locations from which they will have to be moved *again* to
complete the process (sometimes more than once!).
  So, all ales being equal, a drive that is nearer to being full can take
longer to defrag than one with more free space.

  It will also generally take more work to defrag a drive, the more activity
has occurred since it was last done.  For most people this is proporational
to time that has gone by, although not at the same rate for all users.

Dave Gillett


On 15 Oct 2004 at 20:05, John Dent wrote:

> Randy,
>
> You could try Defragmenter Pro Plus by Abexo although it will only be a
> little faster.  Most defrag and scan programs will not have a large speed
> increase over the native Windows apps.  The problem is that as hard drives
> get bigger, scan times take longer. (I don't recommend defragging or
> scanning too often.)
>
> J. Dent
>
>
> At 04:26 PM 10/15/2004, you wrote:
> >I need to know about any other  defrag and scan disk programs out. The
> >ones included with the op sys are just too slow....is there any faster
> >ones out there for download.  Thanks  Randy Chadwick

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