Model Design
Define a model or set of models to forecast resource utilization across IT services, infrastructure, facilities, and people. Agree on assumptions and methodology, as well as error tolerances for each resource type.
Improvement Planning
Practices-Outcomes-Metrics (POM)
Representative POMs are described for Model Design at each level of maturity.
- 2Basic
- Practice
- Ensure a regular, open dialogue occurs within IT to decide which resources should be covered by the IT capacity models.
- Outcomes
- IT capacity modelling covers resources identified by IT.
- Initial forecasting efforts are targeted at areas that are likely to deliver the most benefit.
- Metric
- Percentage of IT resources modelled. Number of formal IT capacity modelling meetings within IT per annum.
- Practice
- Document assumptions and methodologies underpinning the IT capacity models.
- Outcome
- Transparency regarding assumptions and methodologies is emerging.
- Metric
- % of resources covered by aligned assumptions and methodologies.
- 3Intermediate
- Practice
- Ensure IT regularly liaises with some other business units to decide which resources should be prioritized and included in the IT capacity models.
- Outcome
- There is alignment between IT and other business units regarding which resources are addressed by the IT capacity models.
- Metrics
- % of IT resources modelled.
- # of formal IT capacity modelling meetings between IT and other business units per annum.
- Practice
- Ensure standardized assumptions and methodologies are applied to most resources in the IT capacity models.
- Outcome
- A standardized set of methodologies and assumptions is used and drives consistent planning across resources.
- Metric
- % of resources covered by aligned assumptions and methodologies.
- 4Advanced
- Practices
- Agree a formal set of criteria with the business.
- Use these criteria as the basis for decisions regarding which resources are modelled for which area of IT (e.g. architectural sensitivity, level of change, IT posture etc.).
- Outcome
- Objective and consistent criteria are used to determine which resources should be covered.
- Metrics
- % of IT resources modelled.
- # of formal IT capacity modelling decision criteria used.
- Practice
- Use defined processes to apply standardized assumptions and methodologies to all resource types in the IT capacity models.
- Outcome
- Complete standardization of IT capacity models is ensured.
- Metric
- % of resources covered by aligned assumptions and methodologies.
- 5Optimized
- Practice
- Ensure that the set of criteria for deciding resources to be modelled are regularly reviewed and optimized.
- Outcome
- Which resources are modelled is continuously refined and optimized.
- Metrics
- % of IT resources modelled.
- # of formal IT capacity modelling decision criteria used.
- Frequency of IT capacity modelling criteria reviews.
- Practice
- Regularly review the process to improve the assumptions and methodologies underpinning the IT capacity models.
- Outcome
- An optimized process drives consistent and coherent IT capacity modelling across resources.
- Metrics
- % of resources covered by aligned assumptions and methodologies.
- Frequency of IT capacity modelling optimization reviews.
- # of IT capacity modelling process improvements per annum.