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 *********************************************************************** Panalpina Management Ltd., Basle, Switzerland, CIT Department Viadukstrasse 42, P.O. Box 4002 Basel/CH Phone: +41 (61) 226 11 11, FAX: +41 (61) 226 17 01 Direct: +41 (61) 226 19 78 e-mail: [EMAIL PROTECTED] *********************************************************************** -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Richard Sims Sent: Monday, 05 April, 2004 14:36 To: [EMAIL PROTECTED] 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