IT Service Delivery: Capacity Management
Capacity Management is a proactive ITIL process of determining the capacity needs of current and future IT services. The goal of Capacity Management is to ensure that IT services are given sufficient resources to be effective, sustainable, and scalable. There are several benefits to Capacity Management, including the ability to determine where resources are under‐allocated, over‐allocated, and where additional capacity should be funded.
Because Capacity Management is such a large field, there are three realms to consider:
• Business Capacity Management (BCM). Stakeholders evaluate business, financial, economic, and technology indicators with the goal of forecasting future business load.
• Service Capacity Management (SCM). Short‐term needs are identified and addressed within the organization for service‐level, end‐to‐end needs.
• Resource Capacity Management (RCM). Short‐term needs for specific resources within the network are addressed.
There are several activities associated with Capacity Management, including:
• Monitoring. What can the product monitor out‐of‐the‐box and what can it be adapted to monitor.
• Analysis. How well can the product assist with trending.
• Demand Management. How well does the combination of a product’s Monitoring and Analysis capability assist with Demand Management.
• Modeling. The capability to provide a working model of both the existing environment as well a proposed environment.
• Planning. The ability to rely on models and existing capability and performance information to analyze and plan long‐term changes to the environment.
Table provides a review of the capabilities of each product to address the ITIL activities for Service Management.
Microsoft System Center: Operations Manager (MOM) fills the Capacity Management niche in Microsoft environments. MOM includes:
• Monitoring. MOM can provide extensive performance monitoring at the network‐, OS‐, and application‐level. For example, it is capable of monitoring almost every detail of the performance characteristics of an Exchange or Microsoft SQL Server.
• Analysis. MOM provides system administrators with historical and trending information. Additionally, through the use of templates, it is able to help administrators determine when near‐term capacity issues may occur.
MOM alone, however, does not fully satisfy the needs of Capacity Management in Microsoft settings.
Capacity Management Product URLs
Microsoft System Center Capacity
Microsoft System Center:
http://www.microsoft.com/systemcenter/o ... fault.mspx
Hyperic HQ www.hyperic.com
IT Infrastructure Library V2/V3 and IT Service Management discussions
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