DFSMS provides statistics in system management facility (SMF) records that you can use to analyze data set performance. DFSMS also provides a data set performance metric, I/O delay, which provides batch job analysis.

The IBM® TotalStorage DFSMS Optimizer uses these records to analyze and recommend changes to optimize performance of data sets and volumes. The DFSMS Optimizer can also monitor and tune multiple DFSMShsm address spaces in a Parallel Sysplex®. The DFSMS Optimizer can help you maximize storage use and minimize storage costs.