As available service levels are negotiated, identifying the appropriate and specific information to ensure their availability commitments will become the main responsibility of performance management. Through effective monitoring and reporting of performance factors of the storage network, effective storage network configurations can build from the foundation of information and tools used in this process. With performance management in place, the next phase can be begin to evolve : the effective management of performance anomalies, or problems.
As problems start to be discovered , it will become necessary to ensure that these performance anomalies are accurately identified, tracked, and resolved. Thus begins the problem management phase that illuminates and justifies configuration changes, increases and decreases storage resources, and further modifies and enhances those resources necessary to ensure availability.
Chapter 23 will build on the activities, practices, and challenges illustrated and discussed in performance management and availability.