Capacity Management is the discipline that ensures IT infrastructure is provided at the right time in the right volume at the right price, and ensuring that IT is used in the most efficient manner.
This involves input from many areas of the business to identify what services are (or will be) required, what IT infrastructure is required to support these services, what level of Contingency will be needed, and what the cost of this infrastructure will be.
These are inputs into the following Capacity Management processes:
- Performance monitoring
- Workload monitoring
- Application sizing
- Resource forecasting
- Demand forecasting
From these processes come the results of capacity management, these being the capacity plan itself, forecasts, tuning data and Service Level Management guidelines.