Jak kasujesz dane to poczytaj - co mi tam.
http://sqlmag.com/blog/sql-server-and-anti-virus

Simply stated, anti-virus solutions cost money to license, can be expensive to maintain, and can commonly cause expensive problems in production – such as when anti-virus solutions block custom code or configuration options or when they block access to critical IO requests.

Tu mowa jest na maszynach produkcyjnych, lecz problem blokowania kodu i niestandardowych procedur dotyczy też syacji klienckich.