For a definite answer, you will need a developer, but to the best of
my knowledge, an object's DB entry does not contain the object's
expiration date. It contains the management class ID it is associated to,
and during inventory expiration the decision is based on the archive file's
creation date and the current management class settings. So, yes: changing
the management class / copy group parameters applies to all existing archive
files belonging to that management class (same for backups). This applies
to all *SM versions.

You can easily test it: the command line client shows the expiration date
of archive files. So issue a "query archive", change the management class,
and issue a "query archive" again. The expiration date should have
changed.

Don't forget to activate the policy set.

"Lai, Kathy KL" <Kathy.KL.Lai AT PCCW DOT COM> schrieb:
> Dear all,

> I am using ADSM v3.1.2.57 for backup. I am now have a questiong about
> whether I can extend the retention period of an archived file. I have create
> a archive type copy group and a management class with certain retention
> period which is not the default management class (say 7days). Then I use
> this management class and copy group to archive a file. My question is
> whether I can change the retention of that file already archived by changing
> the retention period of the management class? By change the retention period
> of the management class, will it effective to both file already archived and
> new archive file after the change or just effective to file archive after
> the change? If I can change the retention period of an archived file by
> change the retver of the management class, does it mean that I have to
> retrieve the file and then re-archive it for a longer retention?

> Please urgently reply me the question as I am using this method to backup
> the DB archive. User now request to hold a certain online backup image of a
> DB. Now I can only hold the expiration job for the backup image only but not
> the DB archive. Thank you very much.


> > Regards,
> > Kathy Lai
> >

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Reinhard Mersch                        Westfaelische Wilhelms-Universitaet
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