Hi folks I am back on the newsgroup because I desperately would like some
information.  We currently run TSM 3.1 on an MVS 390 mainframe.  As you are
aware definition of the disk storage pools contain an option to migrate to
the next storage pool (in our case cartridge) if the disk pool exceeds a
specified value.  In our case we have these migration thresholds set at high
90% low 70% this means when the disk pool exceeds 90% migrate data until it
reaches 70% and then stop.  I believe this is different from a forced
migration where you empty the storage pool in preparation for the next
backup process.

The question I have been asked is how do I know if we are spilling into this
cartridge pool, i.e. how often is the disk pool exceeding 90% and forcing
migration.  This being the case we will incur extra processing and require
to increase the size of the DASD pool.

Can anyone tell me how to find out if this spill process is occurring.  I.e.
does anyone have a script, batch job etc. on how to determine when (if) this
is happening.  Even what I should be looking for to determine if this is
happening would be helpful.

Await your replies

Thanks John


> John Doherty
> Technical Specialist
> Storage Management
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