Capacity Management

The purpose of these activities is to determine how information technology demands will increase and over what timescale.

In essence capacity management is made up of three sub processes:

• Business capacity management (BCM) – to forecast capacity needs based on business events
• Service capacity management (SCM) – to ensure capacity levels support established service level targets
• Resource capacity management (RCM)

 Inputs

• Performance and workload monitoring
• Application sizing
• Resource forecasting
• Demand forecasting and
• Modelling

Outputs
 

• Forecasts
• Capacity plan
• Tuning data and
• Service level management guidelines

Possible KPIs related to efficiency and effective capacity management

• total cost of unplanned capacity expenditures
• total cost of unused capacity
• accuracy of capacity forecasts
• number of incidents related to capacity/performance issues
• number of service level agreement performance targets missed due to capacity.

ISO 2000 on service management covers this area.