Storage of Scheduled Web Reports
The Security Management appliance retains the most recent reports that it generates — up to 30 of the most recent instances of each scheduled report, and up to 1000 total versions for all reports.
Archived reports are deleted automatically. As new reports are added, older reports are removed to keep the number at 1000. The limit of 30 instances applies to each scheduled report with the same name and time range.
Archived reports are stored in the /periodic_reports directory on the appliance. (See IP Interfaces and Accessing the Appliance for more information.)