From: Robert Comer 

>I was reading recently some extraordinary claims about how SIS made a
>zillion gigabyte backup fit into a matchbox ... or something similar.

It's certainly possible depending on what data you're backing up.

If you have 10,000 PC's with 100G each, but they are all identical set up,
the backup data is going to be the size of the working set of one PC.  in
practice you're never going to get 10,000 identical PC's, but the reduction
will be quite notable.

>But I wonder how SIS can be so effective when backing up general data. Do
>we lusers really have so many duplicate files??

Between PC's, yep, most files are dups.

--
Bob Comer


On Thu, 29 Mar 2007 18:33:05 +1000, John Beckett
 wrote:

>Robert Comer  wrote in message
>news::
>> SIS is the big thing for backups storage, plus the automated hot
>> add/subtract of disks and redundant data is where WHS is cool...
>
>I was reading recently some extraordinary claims about how SIS made a
>zillion gigabyte backup fit into a matchbox ... or something similar.
>
>I have seen SIS at work in RIS (Remote Installation Service) where you can
>store several instances of a Windows installation in a partition, and SIS
>does some terrific magic to replace duplicate files with links.
>
>But I wonder how SIS can be so effective when backing up general data. Do
>we lusers really have so many duplicate files??
>
>John

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