This
               option allows component updates to proceed but prevents hot fix
               deployment and 
OfficeScan client upgrade.
            
 
            If you do not select this option, all clients simultaneously
               connect to the server to upgrade or install a hot fix. This may
               significantly affect server performance if you have a large number
               of clients. If you
               select this option, plan how to minimize the impact of OfficeScan client upgrade or
               hot fix deployment on the server and then execute your plan.