Hi,

I don't think that TSM uses only 1 tape per collocgroup when you have
set maxpr=3. What if only data of one collocgroup is on the diskpool?
TSM would waste resources.
If you turn collocation=none for the tape pool than TSM also uses three
tapes at a time.

Volker




Am Mittwoch, den 07.09.2005, 07:46 -0700 schrieb Thorneycroft, Doug:
> Are there also backups running during this period, If the diskpool doesn't
> have enough space, or a client has files that exceed the diskpools
> maxsize then some of your backups could be using the extra tapes.
>
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
> Maurice van 't Loo
> Sent: Tuesday, September 06, 2005 11:38 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Multiple fillings per node with collocate is group
>
>
> Hi *SM'ers
>
> After migration from diskpool to tapepool, we see every day that several 
> nodes or collocation groups have 2 or sometimes even 3 filling tapes.
>
> As far as i know, migration is always 1 stream per node/collocgroup, so there 
> must be only 1 filling max.
> Right?
> Is this a bug, a feature or misunderstanding??
>
> Tapepool: 3584 libr. with 5 drives
> Migration: hi=50 lo=10 maxpr=3
> Server 5.3.1.2 @ aix
>
> Regards,
> Maurice van 't Loo
>