Introduction to NonStop Operations Management

Performance Management
Introduction to NonStop Operations Management–125507
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Step 3—Forecasting
Step 3—Forecasting
Forecasting consists of the following tasks:
•
Developing a model of the current system that reflects current performance
characteristics.
•
Using the information provided by the application-sizing staff and by business
analysts to estimate projected workload volumes and workload profiles for the next
period (for example, the next two years).
•
Analyzing the expected performance characteristics of the projected workload
volumes and profiles on the current system.
Step 4—Developing the Capacity Plan
Once the forecasting steps are completed, the capacity-planning staff should be able to
develop a capacity plan and report on the alternatives. Developing a capacity plan
consists of the following tasks:
•
Determining if or when additional capacity is needed to meet service-level
agreements.
•
If capacity is needed, analyzing technology and topology alternatives for generating
additional capacity. For each alternative, use a model to:
•
Understand the effects of equipment capacity growth
•
Analyze the ability of the architecture to accommodate unpredictable events
(such as a rapid increase in workload)
•
Recommending which actions to take to ensure that enough capacity will be
available for future needs.
Performance Analysis and Tuning
Performance analysis and tuning consists of five steps:
1. Establishing performance requirements
2. Gathering performance information
3. Analyzing performance information
4. Acting on collected data to optimize system performance (tuning)
5. Reporting results and providing capacity planners with data
Step 1—Establishing Performance Requirements
Performance requirements are based on the service-level agreements and on information
provided by capacity planners. The requirements specify:
•
The resources to be managed and tracked.
•
The availability and reliability standards for systems, peripherals, networks, and
applications.