I've followed the comments on this and have a different observation.
If you just want to move to different ESS disks without any changes
to TSM DB VOLs then here is an alternative, with an assumption that
your TSM server is on AIX platform - you didn't say.

If say you have 10 ESS disks assigned to the TSM DB, then assign 10
more wherever you want them.  Then run cfgmgr to get new disks and
assign them to the VG that TSM DB is on.  At AIX level, create mirrors
from old to new disks, by LV if you want and sync up the mirrors.
Check
that every thing is o.k., then break the mirror to the old disks and
remove them from AIX and delete them at ESS.

I haven't done this with TSM DB but have done it on AIX and ESS from a

number of systems with running Oracle, Sybase and other stuff.
Advantage to this is that it is totally transparent to application and
users except for some performance slowness while syncing mirrors.



David B. Longo
System Administrator
Health First, Inc.
3300 Fiske Blvd.
Rockledge, FL 32955-4305
PH      321.434.5536
Pager  321.634.8230
Fax:    321.434.5509
david.longo AT health-first DOT org


>>> KThach AT COVHLTH DOT COM 11/22/02 09:30AM >>>
I am wanting to move our TSM DB which is currently on ESS, and has 37
1GB
dbvolumes, to another set of ESS disk.  If I define the new dbvolumes
on the
new disks, do I then just extend the db, and then do a del dbvol on the
old
ones?  Does the delete make the data migrate over?

Do I have to do a reduce db for any reason before I do the delete
dbvol?
Can I do the delete with the server up and running?

Thanks

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