I would also recommend archiving.  You might also take a look at a paper I
wrote discussing this issue:

http://www.storsol.com/cfusion/template.cfm?page1=wp_whyaisa&page2=blank_men
u

Archive makes a lot of sense, but perhaps you don't archive "everything" but
rather only those things you are required to archive.  For instance, two
year old copies of electronic mail are not a good idea.  See DOJ vs.
Microsoft.

Backupsets are OK, but are sometimes wieldy.  Anybody with experience
generating these for large quantities of data might share their experiences.
I worked with a customer recently that was trying this approach.   They had
two problems: too many tape mounts and a too small library.  Not all of the
tapes were available in the library so operations was involved. Yuck.

The bottom line is trying to make TSM act like a Grandfather, father, son
backup tool is difficult.  It's perhaps easier to rethink why some stuff is
kept for long periods of time.

Kelly J. Lipp
Storage Solutions Specialists, Inc.
PO Box 51313
Colorado Springs CO 80949-1313
(719) 531-5926
Fax: (240) 539-7175
Email: lipp AT storsol DOT com or lipp AT storserver DOT com
www.storsol.com
www.storserver.com