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.
- 1Initial
- Practice
- Monitor the actual IT capacity headroom for some resources.
- Outcome
- Actual IT capacity headroom of individual resources is understood and can be acted upon.
- Metric
- # of IT resources monitored for IT capacity headroom.
- 2Basic
- Practice
- Operate a process ensuring a regular dialogue within IT to decide which resources should be covered by forecast models.
- Outcome
- Capacity modelling covers resources identified by IT.
- Metrics
- % of IT resources modelled.
- # of formal IT capacity modelling meetings within IT per year.
- Practice
- Document assumptions and methodologies.
- Outcome
- Transparency regarding assumptions and methodologies used.
- Metric
- % of resources covered by aligned assumptions and methodologies.
- 3Intermediate
- Practice
- Liaise regularly between IT and the rest of the business to decide which resources should be prioritized and included in the model.
- Outcome
- Alignment between IT and business regarding which resources are addressed by the model.
- Metrics
- % of IT resources modelled.
- # of formal IT capacity modelling meetings with business and IT per year.
- Practice
- Operate a documented process to ensure standardized assumptions and methodologies are applied to resources in the model.
- Outcome
- A standardized set of methodologies and assumptions are used and drive consistent planning across resources.
- Metric
- % of resources covered by aligned assumptions and methodologies.
- 4Advanced
- Practice
- 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 (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.
- Outcome
- Standardization of models is ensured.
- Metric
- % of resources covered by aligned assumptions and methodologies.
- 5Optimized
- Practice
- Ensure that the set of criteria are regularly reviewed and optimized with involvement of business and IT.
- 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 process and optimize it to improve the assumptions and modelling methodologies used.
- Outcome
- optimized process drives consistent and coherent 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 year.