Having two of anything is more complicated than having one of anything.  If
you can do it, have only one.  Why would you want/need two?  TSM database
too large is probably the only reason I can think of.  With two 25 GB
databases merged to one that is getting fairly large, but not unwieldy
especially with your hardware configuration.  Do you intend to export/import
the data from the old servers into the new one (ones)?  That makes your life
somewhat more difficult.  You perhaps learned that you can't simply restore
the AIX TSM databases to the Solaris TSM servers.  If possible, start from
scratch by having your clients switch to the new server.  The first backup
will be a full.  You can then keep the AIX servers around until the client
data expires.  If you have archive data for the clients on these servers you
can export and import that data to the new servers.

None of this is trivial, but with good planning it isn't hard either.

Kelly J. Lipp
Storage Solutions Specialists, Inc.
PO Box 51313
Colorado Springs, CO 80949
lipp AT storsol DOT com or kelly.lipp AT storserver DOT com
www.storsol.com or www.storserver.com
(719)531-5926
Fax: (240)539-7175