If you are running SonicOS 184.108.40.206-20n, you will notice that the size values displayed in Fastvue Reporter's Dashboards and Reports are insanely large.
This is due to a logging bug introduced in SonicOS 220.127.116.11-20n. Fortunately, SonicWALL have issued a hotfix - 18.104.22.168-20n–HF176616-1n. Customers can request this via SonicWALL support now, and it will be included in 22.214.171.124 generally.
We have more information about the specific issue in our article SonicOS 126.96.36.199-20n New CFS and New Logging Bugs