10 - Performance and Capacity Planning for Storage Networks

Abstract

This chapter focuses on performance and capacity planning for storage networks. Performance and capacity planning can be combined as complementary activities, along with Storage Resource Management (SRM) and utilization, as well as handled as separate tasks. Performance tuning and optimization can initially be seen as a reactionary task to respond to specific situations. A performance plan and ongoing performance tuning initiative can support a shift from reactionary to tactical and longer-term strategic management approaches. For example, shifting to a performance plan approach, where performance and usage are analyzed and optimized as part of an overall growth plan, helps to maximize and optimize spending. Capacity planning can be a one-time exercise to determine the amount and type of resources that are needed to support a given application. A non-tactical approach to resource needs assessment and sizing would enable to simply acquire some amount of resources (hardware, software, networks, and people) and buy more later on as per the requirement. A strategic approach evolves from the tactical to help make more informed decisions and timed acquisitions.