About Reports : About the Network I/O report
  
About the Network I/O report
The Network I/O report summarizes the standard IO data traffic read from and written to the selected Initiator for the time period specified. You view the Network I/O report under Reports > Branch Services: Network I/O. Time Interval and Appliance options are available to customize the report.
For information about navigating and customizing reports, see About navigating and customizing reports.
The Network I/O report contains these statistics that summarize the activity:
Total Bytes Read and Prefetched from Core
Displays the total number of bytes read over the WAN.
Average Read + Prefetch Throughput
Displays the average read throughput.
Total Bytes Written to Core
Displays the total number of bytes written over the WAN.
Average Write Throughput
Displays the average write throughput.
The Network I/O report answers this question:
How many bytes have been written to and read?