Performance tuning and bottleneck identification

When you tune a Tivoli® Storage Manager solution, you must look at all of its components and their configuration. Performance degradation in key operations, including client backups, storage pool migration, and expiration, can be the result of insufficient resources, poor configuration, or both.

The following variables must be examined:

The best way to begin performance tuning is to provide sufficient resources for and optimally configure the server and clients. For example, for a server provide enough system memory, disk systems that are properly sized and configured to handle the workload, database and logs that are properly separated, and correct operating system settings. For backup-archive clients, key items include enough memory, adequate network bandwidth, and careful choice and configuration of backup methods.

To find bottlenecks and identify ways to improve performance, you can use both built-in tools for systems and storage devices, and Tivoli Storage Manager tools.

This performance information provides guidelines for the best performance. Also included are procedures and information about analysis tools to identify performance problems.

Standard subscription and support services from IBM do not include extensive performance analysis and tuning. The comprehensive analysis of a performance problem is a billable service that is offered to Tivoli Storage Manager customers. For more information, see the IBM® Software Support Handbook at http://www14.software.ibm.com/webapp/set2/sas/f/handbook/getsupport.html.