Capacity Planning

Topics: Forecasting, Future, Planning Pages: 2 (546 words) Published: January 8, 2013
In this paper we will illustrate three basic steps for capacity planning: 1. Determine Service Level Requirements
The first step in the capacity planning process is to categorize the work done by systems and to quantify users’ expectations for how that work gets done. 2. Analyze Current Capacity
Next, the current capacity of the system must be analyzed to determine how it is meeting the needs of the users.
3. Planning for the future
Finally, using forecasts of future business activity, future system requirements are determined. Implementing the required changes in system configuration will ensure that sufficient capacity will be available to maintain service levels, even as circumstances change in the future.

Determine Service Level Requirements
We have organized this section as follows:
a. The overall process of establishing service level requirements first demands an understanding of workloads. We will explain how you can view system performance in business terms rather than technical ones, using workloads.

b. Next, we begin an example, showing workloads on a system running a back-end Oracle database.
c. Before setting service levels, you need to determine what unit you will use to measure the incoming work.
d. Finally, you establish service level requirements, the promised level that will be provided by the IT organization
There are several steps that should be performed during the analysis of capacity measurement data.
a. First, compare the measurements of any items referenced in service level agreements with their objectives. This provides the basic indication of whether the system has adequate capacity.
b. Next, check the usage of the various resources of the system (CPU, memory, and I/O devices). This analysis identifies highly used resources that may prove problematic now or in the future.
c. Look at the resource utilization for each workload. Ascertain which workloads are the major users of each resource. This helps narrow...
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