Analyzing the basic performance of disk systems

To verify that a storage system can meet the workload requirements for Tivoli® Storage Manager operations, run stress tests. You might also want to analyze disk performance when changes are made to the host or the network backbone.

About this task

Various tools are available for analysis and stress tests for disk characteristics such as I/O operations per second (IOPS).

Procedure

For AIX®, you can use the ndisk64 command. Search for the latest nstress package at http://www.ibm.com/developerworks/mydeveloperworks/wikis/home/wiki/Power Systems/page/AIX performance analysis and tuning.
You can use third-party tools such as Iometer, which is available for Windows and other operating systems.
For operating systems such as AIX and Linux, you can use the dd command for simple tests of capabilities.