ADSM-L

Re: [ADSM-L] TSM 6.2.2 CPU requirements

2011-01-12 01:37:00
Subject: Re: [ADSM-L] TSM 6.2.2 CPU requirements
From: Roger Deschner <rogerd AT UIC DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 12 Jan 2011 00:35:51 -0600
I'd be more worried about database I/O bandwidth. Expiration and
deduplication are going to hammer the database. All the usual rules
apply, such as avoiding RAID5, using your fastest disks, using striping,
not overloading any one bus, controller, or drive. If you have any of
these bottlenecks then adding more cores cannot improve performance.
Poor database disk I/O can kill a TSM system, regardless of its CPU
resources. If you've got the budget for it, think about using solid
state storage for the TSM database in order to support multiple
expiration and deduplication processes.

Roger Deschner      University of Illinois at Chicago     rogerd AT uic DOT edu
"Fine, Java MIGHT be a good example of what a programming language
should be like. But Java applications are good examples of what
applications SHOULDN'T be like."
- pixadel


On Tue, 11 Jan 2011, Schneider, Jim wrote:

>Good morning, TSM fans!
>
>I'm building an AIX 6 TL4 server to run TSM Server 6.2.2.0.  The
>Performance Tuning manual tells me I need one core per expiration or
>deduplication process.  How many processors are you folks using, and
>does additional processing power have a significant benefit?
>
>Thanks in advance,
>Jim Schneider
>

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