Ever since I've gotten my wireless controller to report to Extreme Management (Netsight) properly its been working pretty well.  The only gripe I have is that it only keeps these statistics for a week.  I'd rather have a bigger sample size so its easier to analyze trends.  A month or more would be great, but I haven't figured out how to keep those statistics for a longer period.  Is there a way to modify the data collection from the wireless controller so EM keeps the data longer?