TSM tracks the additional copies together with primary ones and treats
them according to copygroup rules. Only when primary copy expires the
additional one in the copypool will expire.
If an object is moved to a pool which is not backed up its backups do not
get deleted or expired. Simply new versions do not have backups.
Example:
1. copygroup mandates verexist=3 and we have pri1, pri2 and pri3 in
primary pool A (backed up) + copy1, copy2 and copy3 in the copypool C.
2. data is moved to primary pool B - now pri1-3 are in B and copy1-3 are
still in C
3. new version pri4 is made in B during node backup. Primary pool B is not
backed up so no copy4 is created
4. expiration deletes pri1 & copy1
5. after pri5 is created, pri2&copy2 expire, etc. ...

Now if primary pool B is also backed up to copypool C:
- after step 2 nothing happens - pri1-3 already have copies in C and they
are tracked for the objects, not for the stgpool A
- after step 3 when B is backed up to C an additional copy (copy4) is
created only for pri4 object

But if primary pool A is backed to copypool C and primary pool B is backed
up to copypool D you will end up with copy1a,2a,3a in C and
copy1b,2b,3b,4b in D. And will have to wait until 1-3a copies expire.

Zlatko Krastev
IT Consultant






Gerhard Rentschler <g.rentschler AT RUS.UNI-STUTTGART DOT DE>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
02.10.2002 17:35
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Expiring Files on a Copy Storage pool


Hi,
using the new move nodedata command I moved a number of files from one
sequential stgpool to another. The source stgpool is backed up to a copy
storagepool, the target stgpool is not. Using q occupancy I can see that
the
moved files are still on the copy storagepool. Are they going to be
expired
by the next expire inventory run or should I run backup stgpool? What
happens if I move the files to a different stgpool which is backed up to
the
same copy storage pool? Will they be deleted and backed up again?
Regards
Gerhard

---
Gerhard Rentschler            email:g.rentschler AT rus.uni-stuttgart DOT de
Regional Computing Center     tel.   ++49/711/685 5806
University of Stuttgart       fax:   ++49/711/682357
Allmandring 30a
D 70550
Stuttgart
Germany