At 11:34 AM 11/19/2001 +0000, you wrote:

Hello again TSMers

I have some another questions, this time regarding collocation.

At present we are backing up 21 client nodes and have a backup pool made up
of DISKPOOL and TAPEPOOL. Then we have our off-site volumes, imaginatively
entitled COPYPOOL. I am thinking that we do not necessarily need to use
collocation for all of our nodes; maybe just for five or six of our more
important ones (we do backup sets for these as well).

The questions are as follows:-

1)   What are peoples thoughts on collocation in the first place. Is it
generally a good idea? Any thoughts really?

One of my machines has 950 clients, all under some local administration.  A
graduate division lost their budget folder two weeks ago and are still
working on recovering it because it's spread over 50-75 tapes.  But we're
still working on the politics of collocation for these users.  My other
machine has 850 clients, mostly under central control, so I collocate
everything but desktops.  Critical restores go much quicker, but I have to
spend at least 8 hours a week husbanding a too small scratchpool.

2)   Secondly, can someone tell me a good, clean, simple way of achieving
only collocating certain clients.

I use multiple domains with diskpools that go to tapepools that do or do
not collocate.

3)   Also, baring in mind that at present, we back up all clients to one
COPYPOOL, what would be the implications of a) moving some clients to a new
backup COPYPOOL (what happens to all the data currently stored on the
original COPYPOOL and b) turning off collocation for the original COPYPOOL
(i.e. would this lead to a very long reclamation run).

Everything goes to a single copypool.  If I have to restore a volume, TSM
is bright enough to figure things out.

There is probably a lot more inf. that I should have included here, but I
am relatively new and probably don't know the questions to ask.

Thanks again and I look forward to any help you can all give me.

All the best

Farren Minns