Re: TSM incremental on Windows 2003 not working correctly

That is correct.

The Windows security information is treated by TSM as a part of the file,
to be backed up and restored with the file, so if those permissions
change, then the file is considered to have changed. Hence the file gets
backed up again.

The TSM client manual, chapter 4, section "Full and partial incremental
backup", tells you under which conditions files are eligible for
incremental backup.

Regards,

Andy

Andy Raibeck
IBM Software Group
Tivoli Storage Manager Client Development
Internal Notes e-mail: Andrew Raibeck/Tucson/IBM@IBMUS
Internet e-mail: storman AT us.ibm DOT com

The only dumb question is the one that goes unasked.
The command line is your friend.
"Good enough" is the enemy of excellence.

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 2005-07-21
06:21:22:

> Hello again,
>
> I just found a possible reason for our problem. Our admin did a lot of
> file permission changes on the filesystem.
> I read in the docs that the complete contents of a file is backuped when
> the file permissions have changed.
> Is this really true?? Why is this necessary? Does this also happen on
> Unix systems?
>
> regards,
>
> Volker
>
> Am Donnerstag, den 21.07.2005, 08:38 +0200 schrieb Volker Maibaum:
> > Hello,
> >
> > I have a problem with incremental backups on a windows 2003 file
server.
> > It seems as if TSM always does a full backup.
> > We did a successful initial full backup on the weekend ( 404 GB ).
> > The following days we always had more than 100 GB in the morning and
had
> > to cancel the backup sessions. Today we had even > 230 GB of
> > "incremental" Backup Data when we canceled it. Nobody renamed or moved
a
> > large directory, nor did we set any option in dsm.opt that forces a
full
> > backup. We would except not more than 70 GB of changed data.
> > Anyone having similar problems?
> >
> > TSM Server Version 5.2.5 Linux s390x
> > Client Version 5.3 on Windows 2003 Server
> > Backed up Filesystem is NTFS (compressed)
> >
> > I do the backup via schedule (action is "incremental backup").
> >
> > regards,
> >
> > Volker
> >