Metron

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Metron
Capacity Planning
Andrew Smith and Keith Digby
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Planning
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Metron

• The leading European
• performance management
• software and services company.

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Clients
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Partners
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Athene
CustomDB
OS/390, Windows UNIX
data
ACQUIRE
The Control Centre
information
Performance Database
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Athene
Performance Database
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Market Trends
Mainframe
Server proliferation
Distributed
Consolidation
SLAs
Reduce TCO
End To End
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Service Quality
An acceptable level of service at a known and
controlled cost both now and in the future
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The Performance Pyramid
Value to enterprise
Planning
Trending
Analysis and Reporting
Alerting and Monitoring
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Capacity Planning Methods

• Rules of Thumb

• Ask the vendor

• Benchmarking

• Simulation

• Trending

• Modelling

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Capacity Planning Methods
Level of Accuracy
Effort involved
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Trending

• Pros
• Quick and easy
• Can be automated
• Cons
• Applies only for steady growth
• Reliant only on historical information not known
  future plans

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Baseline Modelling

• Model of existing configuration and workload
• Choose modelling window
• Choose workload components

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Model Definition
Configuration
Workload
Model
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Projection Modelling

• Build projection model starting with baseline
• Multiple projection points
• Timeline or configuration choices
• Look-up tables for hardware changes

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Modelling examples

• Example 1 -
• Predict effects of growth of single workload
• Example 2 -
• Server consolidation

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Modelling Example 1
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Modelling Example 2
Baseline1
Baseline2
UNIX P
UNIX Q

• Assumptions -
• Storage consolidation exercise already completed
• Both systems are running on identical
  configurations

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Modelling Example 2
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Meta-modelling
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Meta-modelling
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What others say
Capacity planning without software tools is a
bit of a black art and when youre dealing with
multi-million dollar budgets, even small errors
in an educated guesstimate can be very costly.
       Iain Allan
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What others say
       Clive Osborne
Norwich Union is competing in a 1 world, by
which we mean that for pensions and CAT standard
investments the maximum annual charge is 1. To
continue to develop Norwich Union as a successful
business given these extremely stringent profit
margins, we need to be very cost conscious.
Athenes role in setting the budgets for IT spend
is fundamental in helping us to achieve this
objective.
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Always look ahead!
Andrew JT Smith andrew.smith_at_metron.co.uk 44
1823 259231
Keith Digby keith.digby_at_metron.co.uk 44 1823
259231