I don't think I have a complete answer for you, but I will start the responses
rolling with my own experience here - perhaps someone else can fill in the
gaps.

We did something very similar to what you did, although it was in the other
direction - we had everyone collocated, and then chose to have our PC backups
not collocated, due to the number of nodes, and the number of potential
partially filled tapes associated with that.  So we split into two pools, and
kept the servers collocated, etc..  However, since this was not (at the time)
covered by a disaster recovery pool, we did not try to move data from pool to
pool - we just left it there.  :-)

>  1. Is there some way to move the _existing_ files in ADSM
>    storage pools for these servers into the new collocated
>    storage pool?

Since you are not collocated to begin with, I am not aware of any way to do
this that you haven't already mentioned.  MOVE DATA works on a volume basis,
and thus doesn't help in your configuration.  The only thing I could think of
was an Export/Import operation.

>  2. Is the separate policy domain the right way to do all this,
>    or should I be reorganining this at a different level of
>    the storage hierarchy?

IMO - you have the right approach.  Actually, I can't think of a different
way, but it is early.  :-)

Jerry Lawson
jlawson AT itthartford DOT com





________________________Forward Header________________________
Author: INTERNET.OWNERAD
Subject: Implementing collocation?
07-31-96 06:22 PM

Because we're implementing offsite backups for 4 of our 80
ADSM nodes, using EXPORT NODE on a VM Version 1 server
(*please* IBM send ADSM Version 2 for VM!), we get a _lot_
of tape mounts when we do the export, although at the
latest server PTF level, the run-time is otherwise OK.

I'd like to implement collocation for just our four RS/6000
servers, leaving all our desktop systems with collocation
off to minimize tape mounts during our daily backups.  I
have created a new policy domain for our servers, including
a separate storage pool with COLLOCATE=YES.  When I switch
the servers to the new policy doman, their backups will
 start going into the new collocated storage pool.  Questions:

 1. Is there some way to move the _existing_ files in ADSM
    storage pools for these servers into the new collocated
    storage pool?

 2. Is the separate policy domain the right way to do all this,
    or should I be reorganining this at a different level of
    the storage hierarchy?

   Jeffrey A. Brooks                  (304) 293-5192
   IBM Systems Group                  jeff AT wvnvm.wvnet DOT edu
   West Virginia Network for Educational Telecomputing
   Morgantown, West Virginia  26505