In this OfficeScan version, the default scan method for fresh installations is smart scan. This means that if you perform a fresh OfficeScan server installation and do not change the scan method on the web console, all agents that the server manages use smart scan.
If you upgrade the OfficeScan server from an earlier version and automatic agent upgrade is enabled, all agents managed by the server still use the scan method configured before the upgrade. For example, if you upgrade from OfficeScan 11.0, which supports smart scan and conventional scan, all upgraded agents that use smart scan continue to use smart scan and all agents using conventional scan continue to use conventional scan.