I have found out that you hear different things from different TSM people
about the same situation. But I know from experience that you must place
your DB volumes on seperate filesystems on seperate physical volumes if
possible for performance. Also, your 1GB volumes won't be to bad because
they will fill up quick and once full, they won't get hit anymore. If you
want to consolidate, then start reducing the database and releasing space.
That the released space and make larger filesystems for a new Database
volume. Do that until you are satisified.

thanks,
Robert. Rippy




From: "Thach, Kevin" <KThach AT COVHLTH DOT COM> on 11/22/2002 09:53 AM

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

To:   ADSM-L AT VM.MARIST DOT EDU
cc:
Subject:  Re: Relocating TSM DB (storage)

Funny you should mention that.  We have been working with IBM ATS support
about poor performance issues with our TSM config, and they say that our
problem is because we have all 37 volumes in one AIX logical
volume/filesystem.  They have had us create 32 new AIX logical
volumes/filesystems (don't need 37 because our db is not very full after
running CLEANUP BACKUPGROUPS), each with a 1GB TSM DBvol inside, all of
which are on separate ESS loops.  They said the smaller DB volumes are
better!  Argghh!!



-----Original Message-----
From: Robert L. Rippy [mailto:robert_rippy AT KINDREDHEALTHCARE DOT COM]
Sent: Friday, November 22, 2002 9:35 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Relocating TSM DB (storage)


Yes, you are correct. Create the new DB's and extend the DB and then delete
the old DB's. The data will migrate over to the new extended space. Any
reason you had 37 1GB volumes for your DB's. IBM told me not to really go
over 10 volumes on your DB and to be sure they aren't on the same drive if
you can help it.

I would suggest that if you could, create 5 8GB new volumes for a total of
40GB and move the DB over to the new 8GB partitions.

Thanks,
Robert Rippy



From: "Thach, Kevin" <KThach AT COVHLTH DOT COM> on 11/22/2002 09:30 AM

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

To:   ADSM-L AT VM.MARIST DOT EDU
cc:
Subject:  Relocating TSM DB (storage)

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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