This alarm is activated when the number of pages being written to disk exceeds a threshold. Sustained high paging rates can adversely effect the performance of a system.
Only those pages that have been altered are written to disk. Pages that have not been changed are dropped.
When this alarm is current, you should:
Look at the Processes page on the Processes drilldown to see which process is causing the paging. Look at the Page Faults/sec column. This will help you determine the cause of paging.
A high level of page faults and page outs indicates memory thrashing. If this is the case, the system may require more memory.