Capacity Management is directly related to the business requirements and is not simply about the performance of the system's components, individually or collectively. Capacity Management is involved in Incident resolution and Problem Identification for those difficulties relating to capacity issues.
Capacity Management activities raise Requests for Change (RFCs) to ensure the appropriate capacity is available. These RFCs are subject to the Change Management process, and implementation may affect several CIs, including hardware, software and documentation, requiring effective Release management.
Capacity Management should be involved in evaluating all Changes, to establish the effect on capacity and performance. This should occur both when changes are proposed after they are implemented. Capacity Management should pay regular attention to the cumulative effect of Changes over a period of time. The negligible effect of single Changes can often combine to cause degraded response times, file storage problems, and excess demand for processing capacity.
In order to have a good understanding of ITIL and the importance of configuration management, we first define what ITIL is: ITIL is literally a collection of documentation.
This documentation can help IT organizations implement the best practices. The documentation grows and grows as more successful techniques are documented and guidelines established for what can make others successful. The latest ITIL resources are published by the UK Office of Government Commerce (OGC).
Integrated service delivery refers to the need for Configuration Management, Change Management, Incident Management, Problem Management and Release Management processes that are linked together in a meaningful manner. For example, the process of releasing components to the live environment (the domain of Release Management) is also an issue for Configuration Management and Change Management whilst the Service Desk is primarily responsible for liaison between IT providers and the Users of services. This section highlights the links and the principal relationships between all the Service Management and other infrastructure management processes.
ITIL processes fall under Operational Layer or Tactical Layer, as follows:
|Operational Layer:||Configuration Management - Service Desk Management - Incident & Problem Management - Change Management - Release Management|
|Tactical Layer:||Service Level Management - Availability Management - Capacity Management - Continuity Management - Financial Management|