Difference between outlook.pst and archive,pst
Actually it does make sense.
RE: Outlook.pst: Archiving removes items. It does not tighten up the empty
space left behind. That's a separate operation, which takes place
automatically only when (a) there is enough empty space to bother with and
(b) the PC is idle (which means it may never happen if you use a screen
saver). You can compact manually by right-clicking the top-level of the PST
file's folders, choosing Properties, then Advanced, then Compact Now.
And then it's possible that there was little or nothing to archive, which
would explain why neither file changed size.
Sue Mosher, Outlook MVP
Outlook and Exchange Solutions
> I'm sorry for my improper question.
> When I archived automatically by Outlook , there was no change in the size
> of outlook.pst(about 3MB) and archive.pst(about 20KB).
> "When you archive items should move from your normal message store
> (Outlook.PST in your case) to your archive store (Archive.PST in your
> is right, the "No change" doesn't make sense.
> Thanks for your continuous concern.