Hi,

basically, the only reason to use different storage pool at all 
are  d i f f e r e n t requirements for handling the data.
This can be different required degree of redundacy (one, two or three
copies of  each file), different storage locations, different
requirements for time to restore, and so on..

If this is true, than you must use separate pools. 
If this is not true, you can use single storage pool as well, even
single primary pool.

I tend to use separate pools, 
because it leaves me more freedom for the future 
at the costs of slightly worse tape usage and more daily tape mounts.

regards

Juraj ?alak
Asamer Familienholding G M B H
EDV
Unterthalhamstraße 2
A-4694 Ohlsdorf
Österreich
www.asamer.at

Büro: +43 7612 799 529
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e-mail: j.salak AT asamer DOT at