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Capacity management: optimising IT performance by distributing resources


In the dynamic environment of IT service management, capacity management is a key factor in optimising system performance and ensuring operational efficiency. According to ITIL4, capacity management, also known as 'capacity and performance management', is a central practice that aims to fulfil the agreed services satisfactorily.


What is capacity management?

Capacity management is the process of planning, monitoring and controlling IT resource capacity to ensure optimal service quality. This includes managing the performance of services and the supporting infrastructure, such as servers, networks and applications. The current ACTUAL state of the systems is regularly checked and evaluated and compared with the defined TARGET state.


The role of the actual state

The actual state describes the current utilisation and performance of IT resources.

Precisely analysing the current status is fundamental. This is achieved through continuous monitoring and detailed analyses, which create the basis for reliable benchmarks. Such data helps to understand current resource consumption and to forecast capacity requirements precisely. By utilising powerful monitoring tools, IT teams can identify weaknesses and bottlenecks before they lead to serious problems.


Planning the target state

The target state defines the future capacity requirements based on forecasts and business assumptions.

It is crucial to have a clear understanding of the target architecture and to continuously adapt it to new business requirements and technological advances. The definition of the target state includes not only technical specifications, but also stakeholder expectations and the business goals to be achieved.


Tools and techniques

Modern capacity management tools range from simple data collection software to complex management platforms that use AI technologies to recognise patterns and improve forecasts. Techniques such as trend analysis, modelling and simulation are also important to accurately plan future capacity requirements. For example, simulative modelling allows you to run different scenarios to understand the impact of changes in infrastructure or service requirements.


Communication and stakeholder management

Effective communication between all stakeholders, including IT managers, service providers and end users, is critical. This ensures that all parties are aware of the capacity plans and can adjust their expectations accordingly. Regular meetings and reports ensure that everyone stays up to date and that plans are aligned with business objectives.


Continuous adaptation and optimisation

Capacity management is not a one-off operation, but an ongoing process. By regularly reviewing and adjusting capacity plans, IT organisations can react flexibly to changes and continuously improve system performance. This iterative process helps to increase efficiency while minimising the risks associated with capacity bottlenecks.


Conclusion: The benefits of robust capacity management

Well-implemented capacity management makes a significant contribution to reducing costs, increasing system availability and maximising the value of IT investments. It enables organisations to be proactive rather than reactive, helping them to prepare for future challenges and take advantage of opportunities. In the world of IT service management, capacity management is a critical discipline that requires strategic planning and tactical execution. With the right tools and a clear strategy, organisations can efficiently manage their IT resources and successfully achieve their service objectives.

By proactively adapting capacity to the needs of the organisation, capacity management can ensure sustainable performance and improved service quality.

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