I have done this similar task in the past.  The way I did it was to
first define the new storage pools, logvs, dbvs,etc  (if you have enough
disk space), then reduce the storage pools and log and db online -
getting rid of the old volumes.  This was done to eliminate downtime on
the adsm server. If you do not have enough disk space to do this for all
at once, maybe you could do it one at a time, or break the db and log
mirrors while you are doing this.  If you do not have any additional
disk space, I am not sure your way will work.  There is a control file
that lists all the volumes defined (dsmserv.dsk I think) and you might
have to manually edit this file to start dsmserv.  I talked to adsm
support on the issue and they did help me through it.....Good luck!

>----------
>From:  Alexander, Robert[SMTP:ralexander AT SHL DOT COM]
>Sent:  Wednesday, December 10, 1997 3:46 PM
>To:    ADSM-L AT VM.MARIST DOT EDU
>Subject:       reorganize ADSM server layout
>
>Hello everyone. I have what I think is a simple task ahead of me, but I
>thought I would see what you all thought-
>
>I have inherited ADSM within my company. I did not layout or plan any of
>its implementation, but now the task of tuning it to
>perform is mine. So, in looking at the way things were laid out, I think
>some fundamental reorganization would be beneficial.
>I wish to take advantage of some of the performace gains that I suppose
>I could make by moving some things around.
>So, I wish to move the layout/location of our disk storagepool volumes,
>db volumes and log volumes.
>
>I have supposed that I can do this the following way:
>1) dsmserv dumpdb  [dump database contents to tape]
>2) dsmserv install      [install a new fresh DB]
>3) define *NEW* dbvols and logvols for ADSM DB in the configuration that
>I wish to have
>4) define new storage pool layouts that I wish to have
>5) dsmserv loaddb     [load db from tape created in step 1]
> 6) dsmserv auditdb   [if suggested at end of step 5]
>
>As long as my DB and LOG are a size eual to or greater than they are
>now, won't this work correctly?
>We have EMC disks and I know that a better layout of the files would
>make them perform better...
>
>What does everyone else think?
>Am I missing something? Any pitfalls/suggestions from anyone who has
>already done such a thing? All of our ADSM is
>running on V2 HPUX server and clients.
>
>Thanks!
>Rob Alexander
>ralexander AT shl DOT com
>