a general question re how backup programs handle pst files ... I have no problems, just curious

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Dave Horne

Senior Member
Outlook version
Outlook 2019 64-bit
Email Account
POP3
I have two pst files, one is 300MB and the other is 1.7GB.

I'm curious how backup programs handle these files when backing up.

If I make one small change to either file, the backup program 'sees' that the file has changed and needs to be backed up. With a file that is 1.7GB, does the backup program 'see' that file as ... one file? Does the backup program then back up a 1.7GB file or can is 'see' what has changed and just back up the difference?

I'm just curious what happens in the background, as it were.

Thanks, in advance, Dave Horne
 
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