Richard, Matt,

Thanks for your input : looks like I'll have to expand my disk pool, or
diminish it's high mig percent to avoid this kind of situation ...
Regards.

Arnaud 

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-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Richard Sims
Sent: Monday, 05 April, 2004 14:36
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Multithreaded session writes on tape although primary pool
is on disk ...


...
>Since I increased this resourceutilization parameter, it looks like the

>client regularly sends it's backups directly to tapelto1_aix ...

This is a classic situation where the disk pool is undersized relative
to demand: it fills (perhaps helped along by stpool caching overhead)
and TSM rules have the data go to the next stgpool in the hierarchy.
Transaction sizing and client-server size anticipations are also
factors.  The cure is to have a generous disk storage pool, unless you
can identify other contributing factors in your configuration
(compression, etc.).  Disk is cheap, so go for it.

  Richard Sims