visit
<http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstracts/sg244877.html?Open>
There you can find a nice redbook named "Tivoli Storage Management
Concepts" (SG24-4877-02). Read carefully all chapters from 1 to 8 (and
some of the others might also be very helpful).
For example, in Chapter 3 "Data storage policy" you can find detailed
answer to your question.

Zlatko Krastev
IT Consultant






inotzki <inotzki AT YAHOO DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
30.05.2003 16:05
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Change of  Policy


Hi guys,

I am still fairly new to TSM and needs all the help I can get.  I need to
change the incremental policy of a certain domain.  I have 7 versions of
backups set on my current policy and are kept for 30 days.  If  I change
that policy to 90 days, will all my 7 backups be retained or  does the
change only affect the new incrementals?  Are my old backup versions bound
to my old policy?

Thanks in advance>
inotzki
TSM system administrator


---------------------------------
Do you Yahoo!?
Free online calendar with sync to Outlook(TM).