From: Mike N. 

On Thu, 13 Apr 2006 19:23:16 +0300, "Antti Kurenniemi"
 wrote:

>Not really. A single thread would still mostly only wait for the disks.
>Check out the CPU/Memory usage during file copy operations - almost no
>activity there.

   There is still a benefit to having a write request queued to the target
drive while having a read request queued to the source drive rather than
waiting for the data to arrive before passing it on to the target.    Both
drives would always have an outstanding read or write request rather than
being idle while the packet is transferred to the other drive.

  I have no idea which method XCOPY, etc uses.

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