[<<]Message[>>]    [<<]Author[>>]    [<<]Subject[>>]    [<<]Thread[>>]

Number   :  8737
Date     :  2004-09-13
Author   :  Burris Millstone
Subject  :  Re: Defrag question....
Size(KB) :  1


--- In xxcopy@yahoogroups.com, "Garry Deane"  wrote:
> --- In xxcopy@yahoogroups.com, "burris millstone"  
> wrote:
> > This has perplexed me for some time now and I'm sure that
> > someone will know the answer.
> > 
> > With three HDDs, I previously used xxcopy with(98) and since
> > inception, xxclone with XPPro. I do an incremental regularly
> > with an occasional full back-up, although I don't see any
> > difference with either choice.
> 
> A full backup should re-copy every file from the source to
> the destination. An incremental backup should only copy
> the files that have changed since the last backup. This should
> copy considerably fewer files than for a full backup. If this
> is not happening, there's something not quite right.

Perhaps I didn't make a clear statement. What you described is what is
happening, however since with the incremental, the destination files
that no longer exist on the source are deleted, why the need for a
full back-up. 



> > Considering the above, what happens to the two other drives
> > after I've defraged the main one. After the defrag, does the
> > clone function actually change the layout on the cloned drive?
> > 
> > Thanks in advance....
> > 
> > burris
> 
> No. Xxclone does a file copy operation. It doesn't reproduce
> the physical layout of the source. You would need to carry
> out a separate defrag of the destination.

>Garry

I figured as much, but if the destination HDD is defragged and then a
copy is sent to it, it will probably write in the same random pattern
that it does on the source drive..ie: writes to the next available
sectors. I suppose if a defrag is done, it should be after the
back-up.

Actually, I was just curious. With XP, the OS does, I'm told, some of
its own file re-arrangement during idle time. 

Isn't nature wonderful??

Thanks again....

burris



This message if part of XXCOPY's message Archive.
The archive contains all the messages posted at Yahoo!Groups: XXCOPY.