Predefined reports about I/O groups You can run predefined reports to analyze and compare the performance of I/O groups. Running the Most Active IO Groups reportTo see which I/O groups are most active on storage systems, run the Most Active IO Groups report. Most Active IO Groups reportShows a chart of the 20 I/O groups that are most active, and details for all I/O groups, for a time period that you specify. Use the report to analyze the performance of I/O groups.Running the Performance of One IO Group reportTo see information about the performance of an I/O group on a storage system, run the Performance of One IO Group report.Performance of One IO Group reportShows four charts, and a table of performance metrics for an I/O group over a time period. Use the report to analyze the performance of an I/O group.Running the Compare Performance of Multiple IO Groups reportUse the Compare Performance of Multiple IO Groups report to compare up to four performance metrics for multiple I/O groups that are on storage systems. For example, you can compare cache percentages, data rates, and I/O rates.Compare Performance of Multiple IO Groups reportShows up to four performance metrics for multiple I/O groups over time. Use the report to compare the performance metrics for I/O groups that are on storage systems.Parent topic: Predefined reports about storage systems and components