I am just a beginner but what I read in the docs was that you have to do it
in REVERSE order!!!
Have a look at RedBook SG24-4877 "Tivoli Storage Management Concepts" (it
can be downloaded from http://www.redbooks.ibm.com).

At page 88 (p.110 in the PDF) you can read:
"       5.4.2 Reclamation of offsite volumes
Care must be taken in reclaiming offsite copy storage volumes. Tivoli
Storage Manager cannot physically move the data from one of these volumes
to another, because they are in a vault, not available in the library.
Tivoli Storage Manager manages reclamation for an offsite copy pool by
obtaining the active files from a primary storage pool or from an onsite
volume of a copy pool. These files are then written to a new volume in the
copy pool, and the database is updated. A message is then issued that an
offsite volume was reclaimed. The new volume will get moved to the offsite
location, and the offsite volumes, whose active data it has combined, will
be moved back to the scratch pool onsite, when the reuse delay parameter
has been satisfied. "

Thus first you have to reclaim volumes from primary pools data. Your copy
data will not be lost and all volumes (look below) will be reclaimed.
You will get the list of emptied volumes which on the phase two can be
retrieved back on-site. This must be done just after you are sure that new
copy volume(s) arrived off-site. Coming back you can take with you the
listed free/scratch volumes.

Remark: If an reclaimable volume contains just part of a file and the rest
is on another volume (which is your associated one). The file would be
reclaimed from both on a third volume (new copy vol) and now the second
volume usage can also drop below 5% (it will become 95% reclaimable). And
you will have another volume for reclamation.

Greetings
Zlatko Krastev
IT Consultant





Ruth Robertson <rrobert AT COXNET DOT ORG> on 26.07.2001 22:08:47
Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
To:     ADSM-L AT VM.MARIST DOT EDU
cc:

Subject:        Retrieving Associated Volumes from Off-Site

My copy storage pool volumes go off-site.  Once a week, I start reclamation
for the off-site volumes: I list out volumes where percent reclaimable
space
>= 95, I retrieve those volumes from off-site, check them in, and set
reclamation to 95.  Works great...except for a few volumes that complain
about an associated volume before they'll be reclaimed.  The associated
volumes don't show up in the reclamation list, and are therefore not
retrieved from off-site.  How do I get the list of volumes associated with
those in the reclamation list?
Since I only receive the ADSM-L Digest, please email me directly.
Thanks!
Ruth Robertson, Unix Administrator
rrobert AT coxnet DOT org