The Index and data write rate graph depicts rates for writing new and changed data and index pages from the buffer pool to the selected tablespace over consecutive monitoring intervals. These rates are based on the number of pages written per second. The graph contains the following series:
Data —Plots the rate at which data pages are written from the buffer pools to the tablespace
Index —Plots the rate at which index pages are written from the buffer pools to the tablespace
The Statistics tab shows the buffer pool read and write counts used to generate this graph.