The Oracle Enterprise Manager for Flash Storage Systems provides one I/O report: the I/O Access for LUNs report.
The top portion of the report is a pie chart that shows the percentage of I/O that has occurred on each LUN during the collection period.
The bottom portion of the report is a bar graph that shows the amount of I/O that has occurred on each of the 10 most active LUNs on the selected Oracle FS System.