Retrospect uses several matching criteria to compare files that have already
been backed up to what is about to be backed up. If one of the following has
been changed at all, Retrospect will back up the file again:

MAC files:
name, size, type, creator, creation date and time, modify date and time, and

PC files:
name, size, modify date and time, file system.

Therefore if the A1 files are identical in all of the ways listed above,
there should only be one in your backup set if matching is set to its

Matthew Tevenan
Technical Support Specialist
Dantz Development Corporation

> From: Bob Durst <[EMAIL PROTECTED]>
> Reply-To: "retro-talk" <[EMAIL PROTECTED]>
> Date: Wed, 28 Jun 2000 13:14:36 -0700
> Subject: Storage space smarts
> I'm curious as to how smart RS is about storage space on a backup
> set. I'll outline the simple situation for the experts to explain to
> me how RS handles it.
> Computer 1 contains files: A1, B1, C1
> Computer 2 contains files: A1, B2, C1
> Both are being backed up to the same backup set. In the backup set
> will there be two copies of A1, and C1 and one each of B1, and B2, or
> will there only be a single copy of A1 and C1 with pointers in both
> computers file lists that they each contain A1 and C1 but 1 contains
> B1 and 2 contains B2?
> I wouldn't care if the files were small, but if they are BIG it makes
> a difference.
> -- 
> -Bob D.
> Builder and Pilot of Kinetic Sculpture Vehicle "Killer Tomato"
> Visit my web site ( )for pictures and
> additional info. 
> --
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