> How do you recommend setting up a management class that would allow me
> to retain backups for 60 days while allowing a PIT restore to any date
> within the past 60 days? I am thinking I should set the copygroup
> parameters VERExists, VERDeleted, RETExtra and RETOnly to 60.
>
> Does this seem correct?

There was some discussion on this last year. In short, you would need:

VEREXISTS=NOLIMIT
VERDELETED=NOLIMIT
RETEXTRA=60
RETONLY=60

Keep in mind that this means someone could make lots and lots of backups
of a file, and all inactive copies will be kept for 60 days from the time
they become inactive. In practice, this would most likely be fairly
rare... but if you are concerned, you might set VEREXISTS and VERDELETED
to 60 (or higher). But "NOLIMIT" this will guarantee the restorability you
seek. If you set VEREXISTS and VERDELETED to 60, then this will guarantee
the restorability provided that only one backup copy (at most) is made per
day. If some files are backed up more than once a day, than you would need
something higher than 60, i.e. 120 if up to two backup copies are made per
day.

For more information, you can check the ADSM-L archives at www.adsm.org.,
You'll find some (but not all) discussion about this if you use this
search criteria:

   +raibeck +verexists +pit

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

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