In previous R77 version it was possible to conifgure SmartEvent retention / database size in the SmartEvent Policy.
How can we do it now with R80?
last time i check with CP tac, the option is not available anymore. the most you could see is SmartEvent R80 > SSmartEvent Settings & Policy > System Status > database utilization.
One thing different in R80 from previous releases is regular logs and SmartEvent are the indexes are now one in the same (they used to be different).
As such, I believe you can manage the size here:
Retrieving data ...